General Administration Command Reference for Cisco ASR 9000 Series Routers

absolute-timeout

To set the absolute timeout for line disconnection, use the absolute-timeout command in line template configuration mode. To remove the absolute-timeout command from the configuration file and restore the system to its default condition, use the no form of this command.

absolute-timeout minutes

no absolute-timeout minutes

Syntax Description


`minutes`	Absolute timeout interval, in minutes. Range is from 10 to 10000.

Command Default

minutes : 1440

Command Modes

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.
Release 5.0.0	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the absolute-timeout command to terminate the connection after the specified time has elapsed, regardless of whether the connection is being used at the time of termination. You can specify an absolute-timeout value for each port. The user is notified 20 seconds before the session is terminated.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the session timeout value to 2880 minutes (2 days) for the default line template:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# absolute-timeout 2880

Related Commands


Command	Description
banner incoming	Sets the idle wait timeout interval for user input over a physical terminal connection.
session timeout	Sets the idle wait timeout interval for user input over a virtual terminal connection.

access-class

To restrict incoming and outgoing connections using an IPv4 or IPv6 access list, use the access-class command in line template configuration mode. To remove the restriction, use the no form of this command.

access-class list-name {in | out}

no accessclass list-name {in | out}

Syntax Description


`list-name`	IPv4 or IPv6 access list name.
in	Filters incoming connections.
out	Filters outgoing connections.

Command Default

No access class is set.

Command Modes

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the access-class command to restrict incoming or outgoing connections to addresses defined in an access list. Use the ipv4 access-list or ipv6 access-list command to define an access list by name.

Note

To restrict access of incoming or outgoing connections over IPv4 and IPv6, the IPv4 access list and IPv6 access list must share the same name.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to specify an access class assigned to outgoing connections for the default line template:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# access-class vtyacl out

The following sample output from the show ipv4 access-lists command displays the IPv4 access list named vtyacl:


RP/0/RSP0/CPU0:router# show ipv4 access-lists vtyacl
  
ipv4 access-list vtyacl
 10 permit ip host 10.32.162.48 any
 20 permit ip host 10.20.49.170 any
 30 permit ip host 10.60.3.5 any

The following sample output from the show ipv6 access-lists command displays the IPv6 access list name vtyacl:


RP/0/RSP0/CPU0:router# show ipv6 access-lists vtyacl
  
ipv6 access-list vtyacl
 10 permit ipv6 host 2001:db8:2222:: any
 20 permit ipv6 host 2001:db8:0:4::2 any

Related Commands


Command	Description
ipv4 access-list	Defines an IPv4 access list by name.
ipv6 access-list	Defines an IPv6 access list by name.

autocommand

To automatically run one or more commands after a user logs in to a vty terminal session, use the autocommand command in line default or line template configuration mode. To remove the autocommand command from the configuration file and restore the system to its default condition, use the no form of this command.

autocommand command

no autocommand command

Syntax Description


`command`	Command or command alias to be executed on user login to a vty session.

Command Default

No default behavior or values

Command Modes

Line template configuration

Line default configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the autocommand command to automatically run a command or command alias when a user logs in to a vty session. To run multiple commands, use a command alias for the command argument. When the user logs in, the commands included in the alias are run sequentially.

Note

The autocommand command is supported on vty connections only; it is not supported on console or aux line connections. Use this command to automatically run a command after user login.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to use the autocommand command to automatically run the show ip interface brief command when a user logs in to a default vty session:


RP/0/RSP0/CPU0:router# configure terminal
RP/0/RSP0/CPU0:router(config)# line default 
RP/0/RSP0/CPU0:router(config-line)# autocommand show ip interface brief
RP/0/RSP0/CPU0:router(config-line)# end

Uncommitted changes found, commit them before exiting(yes/no/cancel)? [cancel]:yes

RP/0/RSP0/CPU0:router# exit
  
  <Your 'TELNET' connection has terminated>

The following example shows how the show ip interface brief command is automatically run when the user logs on to a vty session:


User Access Verification
  
Username: lab
Password:

Executing Autocommand 'show ip interface brief'
RP/0/RSP0/CPU0:router# show ip interface brief
  
Interface                      IP-Address      Status                Protocol
MgmtEth0/RP0/CPU0/0            172.16.0.0      Up                    Up
POS0/0/0/0                     unassigned      Up                    Up
POS0/0/0/1                     unassigned      Up                    Up
POS0/0/0/2                     unassigned      Up                    Up
POS0/0/0/3                     unassigned      Up                    Up
POS0/3/0/0                     unassigned      Up                    Up
POS0/3/0/1                     unassigned      Up                    Up
POS0/3/0/2                     unassigned      Up                    Up
POS0/3/0/3                     unassigned      Up                    Up

The following example shows how to disable the feature using the no form of the autocommand command. In this example, the autocommand for the show ip interface brief command is disabled. When the user logs out, and logs back in, the autocommand command does not run.


RP/0/RSP0/CPU0:router# configure terminal
RP/0/RSP0/CPU0:router(config)# line default 
RP/0/RSP0/CPU0:router(config-line)# no autocommand ?

  LINE  Appropriate EXEC command

RP/0/RSP0/CPU0:router(config-line)# no autocommand show ip interface brief
RP/0/RSP0/CPU0:router(config-line)# end

Uncommitted changes found, commit them before exiting(yes/no/cancel)? [cancel]:yes

RP/0/RSP0/CPU0:router# exit
  
<Your 'TELNET' connection has terminated>
  
User Access Verification
  
Username: lab
Password: 
RP/0/RSP0/CPU0:router#

The following example shows how to use a command alias with the autocommand command to run more than one command when a user logs in to a default vty session. In this example, the alias “test” is created to include the show ip interface brief command and the show users command. The autocommand feature is then used to run the “test” alias when a user logs in to the vty terminal:


RP/0/RSP0/CPU0:router# configure terminal
RP/0/RSP0/CPU0:router(config)# alias test show ip interface brief; show users
RP/0/RSP0/CPU0:router(config)# line default 
RP/0/RSP0/CPU0:router(config-line)# autocommand test
RP/0/RSP0/CPU0:router(config-line)# end
  
Uncommitted changes found, commit them before exiting(yes/no/cancel)? [cancel]:yes

RP/0/RSP0/CPU0:router# exit
  
<Your 'TELNET' connection has terminated>
  
User Access Verification
  
Username: lab
Password:
  
Executing Autocommand 'test'
RP/0/RSP0/CPU0:router# test
  
RP/0/RSP0/CPU0:router# show ip interface brief
  
Interface                      IP-Address      Status                Protocol
MgmtEth0/RP0/CPU0/0            172.16.0.0      Up                    Up
POS0/0/0/0                     unassigned      Up                    Up
POS0/0/0/1                     unassigned      Up                    Up
POS0/0/0/2                     unassigned      Up                    Up
POS0/0/0/3                     unassigned      Up                    Up
POS0/3/0/0                     unassigned      Up                    Up
POS0/3/0/1                     unassigned      Up                    Up
POS0/3/0/2                     unassigned      Up                    Up
POS0/3/0/3                     unassigned      Up                    Up
  
RP/0/RSP0/CPU0:router# show users

   Line            User                 Service  Conns   Idle        Location
*  vty0            lab                  telnet       0  00:00:00     172.16.0.0

banner exec

To create a message that is displayed when an EXEC process is created (an EXEC banner), use the banner exec command in Global Configuration mode.To delete the EXEC banner, use the no form of this command.

banner exec delimiter message delimiter

no banner exec

Syntax Description


`delimiter`	Delimiting character is (c).
`message`	Message text. Text may include tokens in the form $( `token` ) in the message text. Tokens are replaced with the corresponding configuration variable. Tokens are described in Table 1.

Command Default

No EXEC banner is displayed.

Command Modes

Global Configuration mode

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the banner exec command to specify a message that is displayed when an EXEC process is created (a line is activated or an incoming connection is made to a vty). Follow this command with one or more blank spaces and the delimiting character (c). After entering one or more lines of text, terminate the message with the delimiting character (c).

When a user connects to a router, the message-of-the-day (MOTD) banner appears first, followed by the login banner and prompts. After the user logs in to the router, the EXEC banner or incoming banner is displayed, depending on the type of connection. For a reverse Telnet login, the incoming banner is displayed. For all other connections, the router displays the EXEC banner.

Use tokens in the form $( token ) in the message text to customize the banner. Tokens display current configuration variables, such as the router hostname and IP address.

The tokens are described in this table.

Table 1. banner exec Tokens
Token	Information Displayed in the Banner
$(hostname)	Displays the hostname for the router.
$(domain)	Displays the domain name for the router.
$(line)	Displays the vty or tty (asynchronous) line number.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set an EXEC banner that uses tokens:


RP/0/RSP0/CPU0:router(config)# banner exec c

  Enter TEXT message.  End with the character 'c'.

THIS IS AN EXEC BANNER
c

Related Commands


Command	Description
banner incoming	Defines and enables a customized message that is displayed when there is an incoming connection to a terminal line from a host on the network.
banner login	Defines and enables a customized banner that is displayed before the username and password login prompts.
banner motd	Defines a customized MOTD banner.
banner prompt timeout	Defines a customized banner that is displayed when there is a login timeout.

banner incoming

To create a banner that is displayed when there is an incoming connection to a terminal line from a host on the network, use the banner incoming command in Global Configuration mode. To delete the incoming connection banner, use the no form of this command.

banner incoming delimiter message delimiter

no banner incoming

Syntax Description


`delimiter`	Delimiting character is (c).
`message`	Message text. You can include tokens in the form $( `token` ) in the message text. Tokens are replaced with the corresponding configuration variable. Tokens are described in Table 1.

Command Default

No incoming banner is displayed.

Command Modes

Global Configuration mode

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Follow the banner incoming command with one or more blank spaces and the delimiting character (c). After entering one or more lines of text, terminate the message with the second occurrence of the delimiting character (c).

An incoming connection is one initiated from the network side of the router. Incoming connections are also called reverse Telnet sessions. These sessions can display message-of-the-day (MOTD) banners and incoming banners, but they do not display EXEC banners.

When a user connects to a router, the MOTD banner (if configured) appears first, followed by the login banner and prompts. After the user logs in to the router, the EXEC banner or incoming banner is displayed, depending on the type of connection. For a reverse Telnet login, the incoming banner is displayed. For all other connections, the router displays the EXEC banner.

Incoming banners cannot be suppressed. If you do not want the incoming banner to appear, you must delete it with the no banner incoming command.

To customize the banner, use tokens in the form $(token ) in the message text. Tokens display current variables, such as the router hostname and IP address.

This table describes the tokens.

Table 2. banner incoming Tokens
Token	Information Displayed in the Banner
$(hostname)	Displays the hostname for the router.
$(domain)	Displays the domain name for the router.
$(line)	Displays the vty or tty (asynchronous) line number.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to create an incoming connection banner:


RP/0/RSP0/CPU0:router(config)# banner incoming c

  Enter TEXT message. End with the character ‘c’
THIS IS AN INCOMING BANNER. 
c

Related Commands


Command	Description
banner exec	Defines a customized banner that is displayed whenever the EXEC process is initiated.
banner login	Defines and enables a customized banner that is displayed before the username and password login prompts.
bannet motd	Defines a customized MOTD banner.
banner prompt timeout	Defines a customized banner that is displayed when there is a login timeout.

banner login

To create a customized banner that is displayed before the username and password login prompts, use the banner login command in Global Configuration mode. To disable the login banner, use no form of this command.

banner login delimiter message delimiter

no banner login

Syntax Description


`delimiter`	Delimiting character is (c).
`message`	Message text. You can include tokens in the form $( `token` ) in the message text. Tokens are replaced with the corresponding configuration variable. Tokens are described in Table 1.

Command Default

No login banner is displayed.

Command Modes

Global Configuration mode

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Follow the banner login command with one or more blank spaces and the delimiting character (c). Then enter one or more lines of text, terminating the message with the second occurrence of the delimiting character (c).

When a user connects to the router, the message-of-the-day (MOTD) banner (if configured) appears first, followed by the login banner and prompts. After the user successfully logs in to the router, the EXEC banner or incoming banner is displayed, depending on the type of connection. For a reverse Telnet login, the incoming banner is displayed. For all other connections, the router displays the EXEC banner.

To customize the banner, use tokens in the form $( token ) in the message text. Tokens display current configuration variables, such as the router hostname and IP address.

Tokens are described in the this table.

Table 3. banner login Tokens
Token	Information Displayed in the Banner
$(hostname)	Displays the hostname for the router.
$(domain)	Displays the domain name for the router.
$(line)	Displays the vty or tty (asynchronous) line number.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set a login banner:


RP/0/RSP0/CPU0:router(config)# banner login c

Enter TEXT message. End with the character 'c'.
THIS IS A LOGIN BANNER 
c

Related Commands


Command	Description
banner exec	Defines a customized banner that is displayed whenever the EXEC process is initiated.
banner incoming	Defines and enables a customized message that is displayed when there is an incoming connection to a terminal line from a host on the network.
bannet motd	Defines a customized MOTD banner.
banner prompt timeout	Defines a customized banner that is displayed when there is a login timeout.

banner motd

To create a message-of-the-day (MOTD) banner, use the banner motd command in Global Configuration mode. To delete the MOTD banner, use the no form of this command.

banner motd delimiter message delimiter

no banner motd

Syntax Description


`delimiter`	Delimiting character is (c).
`message`	Message text. You can include tokens in the form $( `token` ) in the message text. Tokens are replaced with the corresponding configuration variable.

Command Default

No MOTD banner is displayed.

Command Modes

Global Configuration mode

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Follow this command with one or more blank spaces and the delimiting character (c). Then enter one or more lines of text, terminating the message with the second occurrence of the delimiting character (c).

This MOTD banner is displayed to all terminals connected and is useful for sending messages that affect all users (such as impending system shutdowns). Use the no banner motd command to disable the MOTD banner on a line.

When a user connects to the router, the MOTD banner (if configured) appears first, followed by the login banner and prompts. After the user successfully logs in to the router, the EXEC banner or incoming banner is displayed, depending on the type of connection. For a reverse Telnet login, the incoming banner is displayed. For all other connections, the router displays the EXEC banner.

To customize the banner, use tokens in the form $(token) in the message text. Tokens display current configuration variables, such as the router hostname and IP address.

Tokens are described in this table.

Table 4. banner motd Tokens
Token	Information Displayed in the Banner
$(hostname)	Displays the hostname for the router.
$(domain)	Displays the domain name for the router.
$(line)	Displays the vty or tty (asynchronous) line number.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to configure an MOTD banner with a token:


RP/0/RSP0/CPU0:router(config)# banner motd c

  Enter TEXT message.  End with the character 'c'.
Notice: all routers in $(domain) will be upgraded beginning April 20 
c

Related Commands


Command	Description
banner exec	Defines and enables a customized banner that is displayed whenever the EXEC process is initiated.
banner incoming	Defines and enables a customized message that is displayed when there is an incoming connection to a terminal line from a host on the network.
banner login	Defines and enables a customized banner that is displayed before the username and password login prompts.
banner prompt timeout	Defines a customized banner that is displayed when there is a login timeout.

banner prompt-timeout

To create a banner that is displayed when there is a login authentication timeout, use the banner prompt-timeout command in Global Configuration mode. To delete the prompt timeout banner, use the no form of this command.

banner prompt-timeout delimiter message delimiter

no banner prompt-timeout

Syntax Description


`delimiter`	Delimiting character is (c).
`message`	Message text. You can include tokens in the form $(token) in the message text. Tokens are replaced with the corresponding configuration variable.

Command Default

No banner is displayed when there is a login authentication timeout.

Command Modes

Global Configuration mode

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Follow this command with one or more blank spaces and the delimiting character (c). Then enter one or more lines of text, terminating the message with the second occurrence of the delimiting character (c).

This prompt-timeout banner is displayed when there is a login authentication timeout at the username and password prompt.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to configure a prompt-timeout banner:


RP/0/RSP0/CPU0:router(config)# banner prompt-timeout c

Enter TEXT message.  End with the character 'c'.
THIS IS A PROMPT TIMEOUT BANNER 
c

Related Commands


Command	Description
banner exec	Defines and enables a customized banner that is displayed whenever the EXEC process is initiated.
banner incoming	Defines and enables a customized message that is displayed when there is an incoming connection to a terminal line from a host on the network.
banner login	Defines and enables a customized banner that is displayed before the username and password login prompts.
banner motd	Defines a customized MOTD banner.

clear line

To clear an auxiliary or console line to an idle state, use the clear line command in EXEC mode.

clear line {aux | console} location node-id

Syntax Description


aux	Clears the auxiliary line.
console	Clears the console line.
location `node-id`	Specifies the location of a route processor (RP) where the auxiliary or console line to be cleared resides. The `node-id` argument is entered in the `rack/` `slot/` `module` notation.

Command Default

None

Command Modes

EXEC mode

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID


Task ID	Operations
tty-access	execute

Examples

The following example shows how to clear the console line, putting it in an idle state:


RP/0/RSP0/CPU0:router# clear line console location 0/RP1/CPU0

Related Commands


Command	Description
show users	Displays information about the active lines on the networking device.

clear line vty

To clear a virtual terminal line (vty) to an idle state, use the clear line vty command in EXEC mode.

clear line vty line-number

Syntax Description


`line-number`	Line number in the range from 0 to 99.

Command Default

No default behavior or values

Command Modes

EXEC mode

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show users command to determine the origin of the connection and which lines to clear. When a line is cleared to an idle state, the user on the other end of the connection receives notice that the connection was closed by a foreign host.

Task ID


Task ID	Operations
tty-access	execute

Examples

The following example shows how to reset vty 3 to the idle state:


RP/0/RSP0/CPU0:router# clear line vty 3

Related Commands


Command	Description
show users	Displays information about the active lines on the networking device.

cli interactive syntax check

To enable interactive syntax checking, use the cli interactive syntax check command in the appropriate line configuration mode. To disable interactive syntax checking, use the no form of this command.

cli interactive syntax check

no cli interactive syntax check

Syntax Description

This command has no keywords or arguments.

Command Default

Interactive syntax checking is disabled.

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the cli interactive syntax check command to check command syntax as you type. You are not allowed to enter incorrect syntax.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to enable interactive syntax checking:


RP/0/RSP0/CPU0:router(config)# line console
RP/0/RSP0/CPU0:router(config-line)# cli interactive syntax check

Related Commands


Command	Description
cli whitespace completion	Enables completion of a command when you type the space key.

cli whitespace completion

To enable completion of a command when you type the space key, use the cli whitespace completion command in the appropriate line configuration mode. To disable whitespace completion, use the no form of this command.

cli whitespace completion

no cli whitespace completion

Syntax Description

This command has no keywords or arguments.

Command Default

Whitespace completion is disabled.

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the cli whitespace completion command to complete the next word of the command syntax if you type the space key before completing the word. If more than one option is valid, all options are displayed for you to choose one.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to enable whitespace completion:


RP/0/RSP0/CPU0:router(config)# line console
RP/0/RSP0/CPU0:router(config-line)# cli whitespace completion

Related Commands


Command	Description
cli interactive syntax check	Enables interactive syntax checking.

databits

To set the data bits per character for physical terminal connections, use the databits command in line console configuration mode. To restore the default value, use the no form of this command.

databits {5 | 6 | 7 | 8}

no databits

Syntax Description


5	Sets the data bits per character to 5.
6	Sets the data bits per character to 6.
7	Sets the data bits per character to 7.
8	Sets the data bits per character to 8.

Command Default

Eight databits per character.

Command Modes

Line console configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the databits command to set the data bits attributes for physical terminal connections. Physical terminal connections use either the console or auxiliary line template.

The databits command masks the high bit on input from devices that generate 7 data bits with parity. If parity is being generated, specify 7 data bits per character. If no parity generation is in effect, specify 8 data bits per character. The keywords 5 and 6 are supplied for compatibility with older devices and generally are not used.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the data bits per character for the console terminal template to 7:


RP/0/RSP0/CPU0:router(config)# line console
RP/0/RSP0/CPU0:router(config-line)# databits 7

Related Commands


Command	Description
show users	Displays information about the active lines on the networking device.
stopbits	Sets the number of stop bits.

disconnect

To disconnect a network connection, use the disconnect command in EXEC mode.

disconnect [connection-number | network-name]

Syntax Description


`connection-number`	(Optional) Number of the line of the active network connection to be disconnected. Range is from 1 to 20.
`network-name`	(Optional) Name of the active network connection to be disconnected.

Command Modes

EXEC mode

Command Default

Disconnects the existing network connection if no arguments are provided.

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

Do not disconnect a line to end a session. Instead, log off the host before ending the session to clear the connection. If you cannot log out of an active session, disconnect the line.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to disconnect from a device (in this example “User1”) to return to the router:


User1% disconnect
 Connection closed by remote host
  
RP/0/RSP0/CPU0:router#

disconnect-character

To define a character to disconnect a session, use the disconnect-character command in line template configuration mode. To remove the disconnect-character command from the configuration file and restore the system to its default condition, use the no form of this command.

disconnect-character [number | character]

no disconnect-character

Syntax Description


`number`	(Optional) ASCII decimal equivalent of the disconnect character. Range is from 0 through 255.
`character`	(Optional) Disconnect character.

Command Default

No disconnect character is defined.

Command Modes

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The break character is represented by 0; null cannot be represented.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the disconnect character for the default line template to the Esc character, which is the ASCII decimal equivalent 27:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# disconnect-character 27

Related Commands


Command	Description
escape-character	Defines an escape character.

escape-character

To define a character to escape a session, use the escape-character command in line template configuration mode. To remove the escape-character command from the configuration file and restore the system to its default condition, use the no form of this command.

escape-character {break | number | character | default | none}

no escape-character

Syntax Description


break	Sets the escape character to the Break key.
`number`	ASCII decimal equivalent of the escape character. Range is from 0 through 255.
`character`	Escape character.
default	Specifies the default escape character (^^X).
none	Disables the escape function.

Command Default

The default escape character is ^^X.

Command Modes

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the escape-character command to define an escape character sequence that is different from the default. Use the escape character to exit from an existing connection and return to the EXEC prompt.

The default escape key sequence is Ctrl-Shift-6, X (^^X).The escape-character command with the default keyword sets the escape character to the Break key (the default setting for the Break key is Ctrl-C).

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the escape character for the default line template to Ctrl-P, which is the ASCII decimal character 16:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# escape-character 16

Related Commands


Command	Description
disconnect-character	Defines a disconnect character.

exec-timeout

To set the interval that the EXEC command interpreter waits until user input is detected, use the exec-timeout command in the appropriate line configuration mode. To remove the exec-timeout command from the running configuration and restore the system to its default condition, use the no form of this command.

exec-timeout minutes seconds

no exec-timeout minutes seconds

Syntax Description


`minutes`	Minutes for the wait interval. Range is from 0 to 35791.
`seconds`	Seconds for the wait interval. Range is from 0 to 2147483.

Command Default

minutes : 10

seconds : 0

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

If no input is detected during the interval, the EXEC facility resumes the current connection. If no connections exist, the EXEC facility returns the terminal to the idle state and disconnects the incoming session. To disable the EXEC timeout function so that the EXEC session never timeouts, enter the following command:

exec-timeout 00

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the timeout interval for the console line template to 60 minutes, 0 seconds:


RP/0/RSP0/CPU0:router(config)# line console 
RP/0/RSP0/CPU0:router(config-line)# exec-timeout 60 0

Related Commands


Command	Description
absolute-timeout	Sets the absolute timeout for line disconnection.
session-timeout	Sets the idle wait timeout interval for user input over a virtual terminal connection.

flowcontrol hardware

To configure the hardware flow control setting for physical terminal connections, use the flowcontrol hardware command in line console configuration mode. To remove the attribute from the configuration file and restore the system to its default condition, use the no form of this command.

flowcontrol hardware {in | out | none}

no flowcontrol hardware {in | out | none}

Syntax Description


in	Specifies inbound flow control.
out	Specifies outbound flow control.
none	Specifies no flow control.

Command Default

None

Command Modes

Line console configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the flowcontrol hardware command to set the flow control attribute for physical line connections. Physical line connections use either the console or auxiliary line template.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to restrict the hardware flow control to inbound for the console line template:


RP/0/RSP0/CPU0:router(config)# line console 
RP/0/RSP0/CPU0:router(config-line)# flowcontrol hardware in

Related Commands


Command	Description
show users	Displays information about the active lines on the networking device.

lcd alarm-category

To set the alarm-category (will get displayed on the LCD panel), use the lcd alarm-category command in the appropriate mode. To delete the set category, use the no form of the command.

lcd alarm-category number

no lcd alarm-category number

Syntax Description


`number`	Number to identify the alarm category. This lists indicates the numbers for classification: 1 for critical 2 for critical and major 3 for critical, major and minor 0 for other

Command Default

None

Command Modes

Global configuration

Command History


Release	Modification
Release 7.0.1	This command was introduced.

Usage Guidelines

None

Examples

This example show how to use the lcd alarm-category command:

RP/0/RSP0/CPU0:router (config) # lcd alarm-category 2

lcd message

To set administrative messages (will get displayed on the LCD panel), use the lcd message command in the appropriate mode. To delete the set message, use the no form of the command.

lcd message message

Syntax Description


`message`	Administrative message for the operator. Limit is 512 alphanumeric characters.

Command Default

None

Command Modes

Global configuration

Command History


Release	Modification
Release 7.0.1	This command was introduced.

Usage Guidelines

None

Examples

This example show how to use the lcd message command:

RP/0/RSP0/CPU0:router (config) # lcd message abcd

lcd name

To set the rack-name (will get displayed on the LCD panel), use the lcd name command in the appropriate mode. To delete the set name, use the no form of the command.

lcd name rack-name location

Syntax Description


`rack-name`	The rack-name. Limit is 15 alphanumeric characters.
`location`	The location of the rack (rack-id).

Command Default

None

Command Modes

Global configuration

Command History


Release	Modification
Release 7.0.1	This command was introduced.

Usage Guidelines

None

Examples

This example show how to use the lcd name command:

RP/0/RSP0/CPU0:router (config) # lcd name lc1

length

To set the number of lines that display at one time on the screen, use the length command in line template configuration mode. To remove the length command from the configuration file and restore the system to its default condition, use the no form of this command.

length lines

no length lines

Syntax Description


`lines`	Number of lines that displays on a screen. Range is from 0 through 512. 0 specifies no pausing. The default is 24.

Command Default

lines : 24

Command Modes

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the length command to modify the default length setting for the specified line template. The length setting determines when the screen pauses during the display of multiple-screen output. Specifying a value of 0 for the lines argument prevents the router from pausing between screens of output.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the length of the default line template to 33 lines:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# length 33

Related Commands


Command	Description
terminal length	Sets the length of the display terminal for the current terminal session.

line

To specify the console, the default, or a user-defined line template and enter line template configuration mode, use the line command in

global configuration

mode.

line {console | default | template template-name}

Syntax Description


console	Specifies the line template for the console line.
default	Specifies the default line template.
template `template-name`	Specifies a user-defined line template to be applied to a vty pool.

Command Default

None

Command Modes

Global configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

Use the line command to specify a line template type and enter into line template configuration mode. Line templates are a collection of attributes used to configure and manage physical terminal line connections (the console and auxiliary ports) and vty connections. The following templates are available in Cisco IOS XR software:

Default line template—The default line template that applies to a physical and virtual terminal lines.
Console line template—The line template that applies to the console line.
User-defined line templates—User-defined line templates that can be applied to a range of virtual terminal lines.

Examples

The following example shows how to enter line template configuration mode to allow configuration changes to be made to the default line template:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)#

parity

To set the parity bit for physical terminal connections, use the parity command in line console configuration mode. To specify no parity, use the no form of this command.

parity {even | none | odd}

no parity {even | none | odd}

Syntax Description


even	Specifies even parity.
none	Specifies no parity.
odd	Specifies odd parity.

Command Default

No parity is set.

Command Modes

Line console configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Communication protocols provided by devices such as terminals and modems often require a specific parity bit setting.

Use the parity command for setting the parity attribute for physical terminal connections. Physical terminal connections use either the console or auxiliary line template.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the line parity configuration to even for the console line template:


RP/0/RSP0/CPU0:router(config)# line console
RP/0/RSP0/CPU0:router(config-line)# parity even

Related Commands


Command	Description
show users	Displays information about the active lines on the networking device.

resume

To switch to another active Secure Shell (SSH) or Telnet session, use the resume command in

EXEC

mode.

resume [connection]

Syntax Description


`connection`	(Optional) Name or number of the active network connection; the default is the most recent connection. Number range is from 1 to 20.

Command Default

The most recent connection.

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

SSH and Telnet sessions can be established to another router or server.

When the network session is being established and without disconnecting the network session, you can resume the router console session by typing a special sequence of characters as shown. After switching back to the router console, the network connection can be resumed by specifying the number of the connection or the name of the connection.

You can have several concurrent sessions open and switch back and forth between them. The number of sessions that can be open is defined using the session-limit command.

You can switch between sessions by escaping one session and resuming a previously opened session, as follows:

Escape from the current session by pressing the escape sequence (Ctrl Shift-6, x [^^X]) to return to the EXEC prompt.
Enter the show sessions command to list the open sessions. All open sessions associated with the current terminal line are displayed.
Enter the resume command and the session number to make the connection.

You can also resume the previous session by pressing the Return key.

The ^^X and commands are available for all supported connection protocols.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to escape from one connection and resume another. You can omit the connection name and simply enter the connection number to resume that connection.


host1% ^^X 
RP/0/RSP0/CPU0:router# resume 1

blg_router#

Related Commands


Command	Description
session-limit	Sets the maximum number of outgoing terminal sessions from the current terminal.
show sessions	Displays information about SSH and Telnet connections.
telnet	Logs in to a host that supports Telnet.

send

To send messages to one or all terminal lines, use the send command in

EXEC

mode.

send {* | line-number | aux 0 | console 0 | vty number}

Syntax Description


*	Sends a message to all tty lines.
`line-number`	Line number to which the message is sent. A number from 0 to 101.
aux 0	Sends a message to the auxiliary line.
console 0	Sends a message to the console line.
vty `number`	Sends a message to a virtual terminal line (vty). Range is 0 to 99.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

The system prompts for the message, which can be up to 500 characters long. Enter Ctrl-Z to end the message. Enter Ctrl-C to abort this command.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to send a message to all lines:


RP/0/RSP0/CPU0:router# send *
  
Enter message, end with CTRL/Z; abort with CTRL/C:
The system will be shut down in 10 minutes for repairs.^Z
Send message? [confirm]
RP/0/RSP0/CPU0:router# 
  
***
***
*** Message from tty to all terminals:
***
The system will be shut down in 10 minutes for repairs.

session-limit

To set the maximum number of outgoing terminal sessions from the current terminal, use the session-limit command in the appropriate line configuration mode. To remove any specified session limit, use the no form of this command.

session-limit connections

no session-limit

Syntax Description


`connections`	Maximum number of outgoing connections. Range is from 0 through 20.

Command Default

connections : 6

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to limit the number of active outgoing connections for the default line template to eight:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# session-limit 8

session-timeout

To set the timeout interval for all outgoing connections from the current terminal, use the session-timeout command in the appropriate line configuration mode. To remove the session-timeout command from the configuration file and restore the system to its default condition, use the no form of this command.

session-timeout minutes [output]

no session-timeout minutes

Syntax Description


`minutes`	Timeout interval, in minutes. Range is 0 to 35791. The default is 10.
output	(Optional) Specifies that when traffic is sent to an asynchronous line from the router (within the specified interval), the connection is retained.

Command Default

minutes : 10

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the session-timeout command to set the interval that Cisco IOS XR software waits for traffic before closing the connection to a remote device and returning the terminal to an idle state. If the output keyword is not specified, the session timeout interval is based solely on detected input from the user. If the keyword is specified, the interval is based on input and output traffic.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the session timeout value for the default line template to 120 minutes (2 hours):


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# session-timeout 120

show cli submode-exit

To display the status of terminal submode-exit configuration, use show cli submode-exit status command in EXEC mode.

show cli submode-exit status

Syntax Description

This command has no keywords or arguments.

Command Default

No default behavior or values.

Command Modes

EXEC mode.

Command History


Release	Modification
Release 6.5.1	This command was introduced.

Usage Guidelines

You cannot enable or disable service cli submode-exit on a different users's VTY session..

Examples

RP/0/RSP0/CPU0:router #show cli submode-exit status
Global  submode exit feature is enabled.
Session submode exit feature is enabled

show diag lcd-interface

To display details about the LCD interface (of the craft panel) , use the show diag lcd-interface command in the appropriate mode.

show diag lcd-interface

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 5.2.1	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID


Task ID	Operation
lcd	read

Examples

This example shows how to use the show diag lcd-interface

RP/0/RSP0/CPU0:router # show diag location 0/CI0

Diag Information For : 0/CI0

 0/CI0-IDPROM Info
    Controller Family        : 0084
    Controller Type          : 0932
    PID                      : NCS4K-CRAFT
    Version Identifier       : V00
    UDI Description          : NCS 4000 Craft Panel
    CLEI Code                : NOCLEICODE
    ECI Number               : 11223344
    Top Assy. Part Number    : 800-41609-01
    Top Assy. Revision       : 12
    PCB Serial Number        : SAL1818RL2G
    PCA Number               : 73-14799-03

show line

To display the parameters of terminal lines, use the show line command in

EXEC

mode.

show line [aux location node-id | console location node-id | vty number]

Syntax Description


aux	(Optional) Displays the terminal line parameters for the auxiliary line.
location `node-id`	(Optional) Specifies the location for the route processor (RP) on which the auxiliary or console port resides. The `node-id` argument is entered in the `rack/` `slot/` `module` notation.
console	(Optional) Displays the terminal line parameters for the console line.
vty `number`	(Optional) Specifies a virtual terminal line (vty) number. Range is from 0 through 99.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID


Task ID	Operations
tty-access	read

Examples

The following example shows sample output from the show line command. The asterisk (*) indicates the current terminal session.


RP/0/RSP0/CPU0:router# show line
  
     Tty             Speed     Modem  Uses   Noise Overruns           Acc I/O
     aux0_0_0         9600       -     -       -      0/0               -/-
  *  con0_0_0         9600       -     -       -      0/0               -/-
     vty0             0/0        -     -       -      0/0               -/-
     vty1             0/0        -     -       -      0/0               -/-
     vty2             0/0        -     -       -      0/0               -/-
     vty3             0/0        -     -       -      0/0               -/-
     vty4             0/0        -     -       -      0/0               -/-
     vty100           0/0        -     -       -      0/0               -/-
     vty101           0/0        -     -       -      0/0               -/-
     vty102           0/0        -     -       -      0/0               -/-
     vty103           0/0        -     -       -      0/0               -/-
     vty104           0/0        -     -       -      0/0               -/-
     vty105           0/0        -     -       -      0/0               -/-

Table 5. show line Field Descriptions
Field	Description
Tty	Available ttys and vtys.
Speed	Baud rate that the inbound serial connection is using, in bps.
Modem	Not implemented.
Uses	Not implemented.
Noise	Not implemented.
Overruns	Hardware Universal Asynchronous Receiver/Transmitter (UART) overruns or software buffer overflows, both defined as the number of overruns or overflows that have occurred on the specified line since the system was restarted. Hardware overruns are buffer overruns; the UART chip has received bits from the software faster than it can process them. A software overflow occurs when the software has received bits from the hardware faster than it can process them.
Acc I/O	Not implemented.

The following example shows sample output from the show line command with the console line specified:


RP/0/RSP0/CPU0:router# show line console location 0/rp0/cpu0
  
     Tty             Speed     Overruns             Acc I/O
     con0/RP0/CPU0    9600          0/0                 -/-         
  
  Line con0_RP0_CPU0, Location "0/RP0/CPU0", Type "Console"
  Length: 24 lines, Width: 80 columns
  Baud rate (TX/RX) is 9600, 1 parity, 2 stopbits, 8 databits
  Template: console
  Capabilities: Timestamp Disabled
  Allowed transports are none.

Table 6. show line location Field Descriptions
Field	Description
Tty	Unique identifier of the tty; it contains the type of tty and, for physical ttys, it indicates the physical location of the tty.
Speed	Baud rate that the inbound serial connection is using in bps.
Overruns	Hardware UART overruns or software buffer overflows, both defined as the number of overruns or overflows that have occurred on the specified line since the system was restarted. Hardware overruns are buffer overruns; the UART chip has received bits from the software faster than it can process them. A software overflow occurs when the software has received bits from the hardware faster than it can process them.
Acc I/O	Not implemented.
Line	Unique identifier of the TTY. This field displays the type of TTY and the physical location of physical TTYs.
Location	Location of the line.
Type	Line type.
Length	Length of the terminal or screen display, in rows.
Width	Width of the terminal or screen display, in columns.
Baud rate (TX/RX)	Transmit rate/receive rate of the line, in bps.
parity	Parity bits value used for physical terminal connections.
stopbits	Stop bits value used for physical terminal connections.
databits	Data bits value used for physical terminal connections.
Template	Line template being sourced by the particular connection.
Config	Configuration applied to the tty. This field indicates the allowed incoming transports that can be used to access the router from this tty.
Allowed transports are	Incoming transport protocols that can be used by this tty to access the router.

show sessions

To display information about suspended Secure Shell (SSH) and Telnet connections launched from the terminal session, use the show sessions command in

EXEC

mode.

show sessions

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show sessions command to display the hostname, remote connection service used by the router to access the host, idle time, and connection name.

Task ID


Task ID	Operations
tty-access	read

Examples

The following example shows sample output from the show sessions command:


RP/0/RSP0/CPU0:router# show sessions
  
  Conn Host                Address             Service Idle Conn Name
  *  1 10.26.25.40         10.26.25.40         telnet    15 10.26.25.40

The asterisk (*) indicates the current terminal session.

Table 7. show sessions Field Descriptions
Field	Description
Conn	Identifier for the connection used for resuming and disconnecting suspended sessions. An asterisk (*) indicates the current terminal session.
Host	Remote host to which the router is connected. This field displays either the IP address or hostname of the remote host. If the IP address of the remote host is mapped to the hostname (that is, if Domain Name System [DNS] services are enabled) and the session is initiated with the hostname, the output for this field displays the hostname of the host rather than the IP address of the host.
Address	IP address of the remote host.
Service	Remote connection service used.
Idle	Interval (in seconds) since data was last sent on the line.
Conn Name	Equivalent to the “Host” field in Cisco IOS XR software.

Related Commands


Command	Description
disconnect	Disconnects a network connection.
resume	Switches to another active Telnet session.

show terminal

To obtain information about the terminal configuration attribute settings for the current terminal line, use the show terminal command in

EXEC

mode.

show terminal

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

None.

Examples

This example shows sample output from the show terminal command:


RP/0/RSP0/CPU0:router# show terminal
  
Line vty0, Location "10.56.249.67", Type "VTY"
Length: 24 lines, Width: 80 columns
Baud rate (TX/RX) is 0, 0 parity, 0 stopbits, 0 databits
Template: default
Capabilities: Timestamp Disabled
Allowed transports are telnet ssh.

Table 8. show terminal Field Descriptions
Field	Description
Line	Line that is currently being used.
Location	Location of the terminal accessing the router.
Type	Type of line.
Length	Length of the terminal or screen display, in rows.
Width	Width of the terminal or screen display, in columns.
Baud rate (TX/RX)	Transmit or receive rate of the line, in bps.
parity	Parity bits value used for physical terminal connections.
stopbits	Stop bits value used for physical terminal connections.
databits	Data bits value used for physical terminal connections.
Template	Line template being sourced by the particular connection.
Config	Configuration applied to the tty. This field indicates the allowed incoming transports that can be used to access the router from this tty.
Allowed transports are	Incoming transport protocols that can be used by this tty to access the router.

show users

To display information about the active lines on the router, use the show users command in EXEC mode.

show users

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the show users command to display the line number, connection name, idle time, hosts, and terminal location. An asterisk (*) indicates the current terminal session.

Note

To display all user groups and task IDs associated with the currently logged-in user, use the show user command in EXEC mode. See the Authentication, Authorization, and Accounting Commands on Cisco IOS XR Software module in System Security Command Reference for Cisco ASR 9000 Series Routers.

Task ID


Task ID	Operations
tty-access	read

Examples

The following example shows sample output identifying an active vty terminal session:


RP/0/RSP0/CPU0:router# show users
  
     Line            User                 Service  Conns   Idle        Location
     con0_RP0_CPU0   cisco                hardware     0  18:33:48     
     vty0            cisco                telnet       0  00:30:36     10.33.54.132
  *  vty1            cisco                telnet       0  00:00:00     10.33.54.132

Table 9. show users Command Output Field Descriptions
Field	Description
Line	All current connections. An asterisk (*) indicates the active connection.
User	Username of the user logged into the line.
Service	Physical or remote login service used.
Conns	Number of outgoing connections.
Idle	Interval (in hours:minutes:seconds) since last keystroke.
Location	IP address of remote login host. For local (physical) terminal connections, this field is blank.

Related Commands


Command	Description
show line	Displays the parameters of a terminal line.
show user	Displays all user groups and task IDs associated with the currently logged-in user.

stopbits

To set the stop bits used for physical terminal connections, use the stopbits command in line console configuration mode. To restore the default, use the no form of this command.

stopbits {1 | 2}

no stopbits

Syntax Description


1	Specifies one stop bit.
2	Specifies two stop bits. This is the default.

Command Default

Two stop bits.

Command Modes

Line console configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the stopbits command to set the data bits attributes for physical terminal connections. Physical terminal connections use either the console or auxiliary terminal templates.

Communication protocols provided by devices such as terminals and modems often require a specific stop-bit setting.

Note

The number of stop bits configured on the router and a terminal server should be same. The default number of stop bits on the router is two stop-bits.

Task ID


Task ID	Operations
tty-access	read, write

Examples

This example shows how to change the default from two stop bits to one for the console line template:


RP/0/RSP0/CPU0:router(config)# line console
RP/0/RSP0/CPU0:router(config-line)# stopbits 1

Related Commands


Command	Description
databits	Sets the number of data bits.

terminal cli submode-exit

To enable or disable submode-exit on all interactive configuration sessions per VTY, use terminal cli submode-exit command in EXEC mode.

terminal cli submode-exit

Syntax Description


enable	Enables submode-exit on all interactive configuration sessions per VTY.
disable	Disables submode-exit on all interactive configuration sessions per VTY.

Command Default

No default behavior or values.

Command Modes

EXEC mode.

Command History


Release	Modification
Release 6.5.1	This command was introduced.

Usage Guidelines

You cannot enable or disable service cli submode-exit on a different users's VTY session..

Examples

RP/0/RSP0/CPU0:router #terminal cli submode-exit ?
  disable  Disable submode-exit behavior for this config session
  enable   Enable submode-exit behavior for this config session

RP/0/RSP0/CPU0:router #terminal cli submode-exit enable
WARNING: submode-exit enable is already configured at GLOBAL level.This takes precedence over per-session settings.

RP/0/RSP0/CPU0:router #terminal cli submode-exit disable

terminal exec prompt

To specify prompt attributes for the current terminal session, use the terminal exec prompt command in the appropriate mode.

terminal exec prompt {no-timestamp | timestamp}

Syntax Description


no-timestamp	Disables the time-stamp printing before each command.
timestamp	Enables the time-stamp printing before each command.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

Use theterminal exec prompt command with the timestamp keyword to show the time-stamp display after each command is entered. Use the terminal exec command with the no-timestamp keyword to disable the time-stamp display.

Note

The terminal commands are active for the current terminal session only. To apply a setting to all sessions, use the line commands.

Examples

This example shows how to enable the time-stamp prompt. When enabled, the date and time are displayed after each command. In this example, the show version command is entered, and the date and time is displayed.


RP/0/RSP0/CPU0:router# terminal exec prompt timestamp   
RP/0/RSP0/CPU0:router# show version 

Thu Jan 14 06:39:50.926 PST

Cisco IOS XR Software, Version 3.9.1.15I[DT_IMAGE]
Copyright (c) 2010 by Cisco Systems, Inc.

ROM: System Bootstrap, Version 1.2(20090903:202931) [ASR9K ROMMON],  

router uptime is 6 days, 14 hours, 47 minutes
System image file is "bootflash:disk0/asr9k-os-mbi-3.9.1.15I/mbiasr9k-rp.vm"

cisco ASR9K Series (MPC8641D) processor with 4194304K bytes of memory.
MPC8641D processor at 1333MHz, Revision 2.2

2 Management Ethernet
40 GigabitEthernet
12 TenGigE
219k bytes of non-volatile configuration memory.
975M bytes of compact flash card.
33994M bytes of hard disk.
1605616k bytes of disk0: (Sector size 512 bytes).
1605616k bytes of disk1: (Sector size 512 bytes).

Configuration register on node 0/RSP0/CPU0 is 0x102
Boot device on node 0/RSP0/CPU0 is disk0:
  --More--

The following example shows how to disable the time-stamp prompt:


RP/0/RSP0/CPU0:router# terminal exec prompt no-timestamp

terminal exec utility pager

To configure the terminal page display options, use the terminal exec utility pager command in the appropriate mode.

terminal exec utility pager {less | more | none}

Syntax Description


less	Specifies to use unix-like "less" bidirectional paging for the terminal display.
more	Specifies to use unix-like "more" unidirectional paging for the terminal display.
none	Specifies that the display is not paginated.

Command Default

No pagination is configured by default.

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the terminal exec utility pager command with the more keyword to scroll forward through command display one screen at a time. "--More--" is displayed at the end of each screen. Press the Space key to advance one screen. Press the Enter key to advance one line. Press the Esc key to exit the command display.

Task ID


Task ID	Operation
tty-access	Read

Examples

This example shows how to limit command display to one screen at a time such that you can move forward through the display:

RP/0/RSP0/CPU0:router#terminal exec utility pager more

terminal length

To set the number of lines that display at one time on the screen for the current terminal session, use the terminal length command in

EXEC

mode.

terminal length lines

Syntax Description


`lines`	Number of lines that display on a screen. Range is from 0 through 512.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the terminal length command to set the terminal length value for only the current terminal session and not save it to the running configuration. Exiting from the terminal session returns the terminal length value to the value configured with the length command.

Specifying a value of 0 for the lines argument prevents the router from pausing between screens of output.

Note

The terminal commands are active for the current terminal session only. To apply a setting to all sessions, use the line commands.

Task ID


Task ID	Operations
tty-access	read, write

Examples

This example shows how to set the length for the current terminal session to 120 lines:


RP/0/RSP0/CPU0:router# terminal length 120

Related Commands


Command	Description
length	Sets the length of the display terminal.

terminal width

To set the width of the display terminal for the current terminal session, use the terminal width command in

EXEC

mode.

terminal width characters

Syntax Description


`characters`	Number of characters to display on a screen. Range is from 0 to 512.

Command Default

None

Command Modes

EXEC

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the terminal width command to set the terminal width value for only the current terminal session and not save it to the running configuration. Exiting from the terminal session returns the terminal width value to the value configured with the width (display) command.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the terminal width for the current terminal session to 120 characters:


RP/0/RSP0/CPU0:router# terminal width 120

Related Commands


Command	Description
width display	Sets the width of the display terminal.

timestamp disable

To disable time-stamp recording at the top of each command output, use the timestamp disable command in the appropriate line configuration mode. To reenable time-stamp recording if disabled, use the no form of this command.

timestamp disable

no timestamp disable

Syntax Description

This command has no keywords or arguments.

Command Default

Time-stamp recording at the top of each command output is enabled.

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

By default, the time stamp is displayed at the top of any command output. The time stamp records the time at which the command was issued. You can use the snmp-server view command to disable this setting so that the time stamp does not appear at the top of the command output. This setting applies to all command outputs on any terminal line to which the current line template applies.

Task ID


Task ID	Operations
tty-access	read, write

Examples

This example shows how to disable time-stamp recording for the console line template:


RP/0/RSP0/CPU0:router(config)# line console             
RP/0/RSP0/CPU0:router(config-line)#  timestamp disable

transport input

To define the transport protocols that can be used to access the router, use the transport input command in the appropriate line configuration mode. To change or remove the protocol, use the no form of this command.

transport input {all | none | ssh | telnet}

no transport input {all | none | ssh | telnet}

Syntax Description


all	Specifies the Secure Shell (SSH) and Telnet protocols.
none	Specifies that the router rejects incoming SSH and Telnet transport protocol connections.
ssh	Specifies the SSH transport protocol.
telnet	Specifies the Telnet transport protocol.

Command Default

All protocols are allowed on the line.

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

To be accepted, incoming network connections to an asynchronous port (terminal line) must use a transport protocol specified with the transport input command. This command can be useful in limiting the acceptable transport protocols to include or exclude those used by different types of users, or to restrict a line to secure connections (SSH connections).

Task ID


Task ID	Operations
tty-access	read, write

Examples

This example shows how to set the transport input setting for the default line template to SSH connections:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# transport input ssh

Related Commands


Command	Description
transport output	Determines the protocols that can be used for outgoing connections from a line.
transport preferred	Specifies the transport protocol that Cisco IOS XR software uses if the user does not specify one when initiating a connection.

transport output

To specify the transport protocols that can be used for outgoing connections from a line, use the transport output command in the appropriate line configuration mode. To change or remove the protocol, use the no form of this command.

transport output {all | none | ssh | telnet}

no transport output {all | none | ssh | telnet}

Syntax Description


all	Specifies the Secure Shell (SSH) and Telnet transport protocols.
none	Specifies that the router rejects outgoing SSH and Telnet transport protocol connections.
ssh	Specifies the SSH transport protocol.
telnet	Specifies the Telnet transport protocol.

Command Default

All protocols are allowed on the line.

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.
Release 3.8.0	No modification.
Release 3.9.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Any settings made with the transport output command override settings made with the transport preferred command.

Task ID


Task ID	Operations
tty-access	read, write

Examples

This example shows how to set the default line template to prevent any outgoing transport protocol connections:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# transport output none

Related Commands


Command	Description
transport input	Defines which protocols to use to connect to a specific line of the router.
transport preferred	Specifies the transport protocol that Cisco IOS XR software uses if the user does not specify one when initiating a connection.

transport preferred

To specify the default outgoing transport protocol to be used for initiating network connections, use the transport preferred command in the appropriate line configuration mode. To change or remove the protocol, use the no form of this command.

transport preferred {none | ssh | telnet}

no transport preferred {none | ssh | telnet}

Syntax Description


none	Disables the feature.
ssh	Specifies the Secure Shell (SSH) transport protocol.
telnet	Specifies the Telnet transport protocol.

Command Default

No transport protocol is set as the default outgoing protocol.

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the transport preferred command to provide a default transport protocol to use when initiating outgoing connections. The preferred outgoing transport protocol specified with the transport preferred command enables you to initiate an outgoing connection without explicitly specifying the transport protocol.

Cisco IOS XR software assumes that any unrecognized command is a hostname and the software attempts a connection. When the protocol is set to none , the system ignores unrecognized commands entered at the EXEC prompt, and does not attempt a connection.

The default setting, the same as using the transport preferred command with the none keyword, prevents errant connection attempts.

Task ID


Task ID	Operations
tty-access	read, write

Examples

The following example shows how to set the preferred transport setting for the default line template to SSH:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# transport preferred ssh

Related Commands


Command	Description
transport input	Defines which protocols to use to connect to a specific line of the router.
transport output	Determines the protocols that can be used for outgoing connections from a line.

vty-pool

To create or modify a virtual terminal line (vty) pool, use the vty-pool command in

global configuration

mode. To delete a vty pool, use the no form of this command.

vty-pool {default | eem | pool-name} first-vty last-vty [line-template {default | template-name}]

no vty-pool {default | eem | pool-name} first-vty last-vty [line-template {default | template-name}]

Syntax Description


default	Specifies the default vty pool.
eem	Specifies the embedded event manager vty pool.
`pool-name`	User-defined vty pool.
`first-vty`	First vty line in the pool. For the default vty pool, you must specify 0 for the first vty line. For a user-defined vty pool, the range is 5 to 99. For the embedded event manager vty pool, you must specify 100 for the first vty line.
`last-vty`	Last vty line in the pool. The default vty pool must contain at least five vtys. Range is 4 to 99. For a user-defined vty pool, the range is 5 to 99. The embedded event manager vty pool must contain at least six vtys. Range is 105 to 199.
line-template	(Optional) Specifies the terminal template to be used in the configuration of virtual terminals in the vty pool.
default	Specifies that the vty pool should reference the default template.
`template-name`	User-defined template to be applied to the vtys in the vty pool.

Command Default

default vty-pool : 5 vtys (vty 0 through 4) referencing the default line template.

eem vty pool : 6 vtys (vty 100 through 105) referencing the default line template.

Command Modes

Global configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

When creating or modifying vty pools, follow these usage guidelines:

Before creating or modifying the vty pools, enable the Telnet server using the telnet server command in global configuration mode. See IP Addresses and Services Configuration Guide for Cisco ASR 9000 Series Routers and IP Addresses and Services Command Reference for Cisco ASR 9000 Series Routers for more information.
The vty range for the default vty pool must start at vty 0 and must contain a minimum of five vtys.
The vty range from 0 through 99 can reference the default vty pool.
The vty range from 5 through 99 can reference a user-defined vty pool.
The vty range from 100 is reserved for the embedded event manager vty pool.
The vty range for embedded event manager vty pools must start at vty 100 and must contain a minimum of six vtys.
A vty can be a member of only one vty pool. A vty pool configuration fails if the vty pool includes a vty that is already in another pool.

If you attempt to remove an active vty from the active vty pool when configuring a vty pool, the configuration for that vty pool fails.

Examples

This example shows how to configure a user-defined vty pool (test1) that contains vtys 10 through14 and references the user-defined line template test2:


RP/0/RSP0/CPU0:router(config)# vty-pool test1 10 14 line-template test2

width (display)

To set the width of the display terminal, use the width command in the appropriate line configuration mode. To remove the width command from the configuration file and restore the system to its default condition, use the no form of this command.

width characters

no width characters

Syntax Description


`characters`	Number of characters to display on a screen. Range is from 0 to 512.

Command Default

characters : 80

Command Modes

Line console configuration

Line default configuration

Line template configuration

Command History


Release	Modification
Release 3.7.2	This command was introduced.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Use the width command to modify the default width setting for the specified line template.

Task ID


Task ID	Operations
tty-access	read, write

Examples

This example shows how to set the terminal width for the default line template to 99 characters:


RP/0/RSP0/CPU0:router(config)# line default
RP/0/RSP0/CPU0:router(config-line)# width 99

Related Commands


Command	Description
terminal width	Sets the width of the display terminal for the current terminal session.

Bias-Free Language

Results

Chapter: Terminal Services Commands

Terminal Services Commands

absolute-timeout

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Related Commands

access-class

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Related Commands

autocommand

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

banner exec

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Related Commands

banner incoming

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Related Commands

banner login

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Related Commands

banner motd

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Related Commands

banner prompt-timeout

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

Related Commands

clear line

Syntax Description

Command Default

Command Modes