This document describes how to troubleshoot hardware or communication issues between the console line and the console ports of a Route Processor (RP) on a Cisco 6008 Series Network Convergence System (NCS6008).
The NCS6008 RP has three console ports:
Normal services are impacted by the process that is described in this document if the console ports are not accessible. There will be no business impact to services.
Before you attempt the process that is described in the next section, ensure that you do not have cable issues. Use the same cable in order to confirm whether you can console to a different RP.
Also, enter the show process devc-conaux-con command in order to check the system status:
show processes devc-conaux-con
If any issues are discovered, then perform a coredump and restart the process. If the output confirms that there are no issues, then proceed to the next section in order to isolate the issue.
Here is an example output:
[host:~]$ stty -aF /dev/ttyS0
speed 115200 baud; rows 0; columns 0; line = 0;intr = ^C; quit = ^\; erase = ^?;
kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q;
stop = ^S;susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1;
time = 0;-parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts-ignbrk -brkint
-ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl -ixon -ixoff -iuclc -ixany
-imaxbel -iutf8opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0
tab0 bs0 vt0 ff0-isig -icanon -iexten -echo echoe echok -echonl -noflsh -xcase
-tostop -echoprt echoctl echoke[host:~]$
Complete these steps in order to isolate the RP issue:
RP/0/RP0/CPU0:NCS6008-A#admin
Tue Mar 17 13:51:05.919 UTC
<username> connected from 127.0.0.1 using console on xr-vm_node0_RP0_CPU0
sysadmin-vm:0_RP0#
sysadmin-vm:0_RP0# run chvrf 0 ssh 10.0.2.2
Thu Mar 12 05:03:37.262 UTC
[host:~]$
[host:~]$ >> Console 0 host.
host:~]$ echo Hello I am console 0 >/dev/ttyS0 >> Sending from S0 i.e. Console0On the console line, you can see the message that was sent from the host of Console 0:
[host:~]$
Connecting to Device Port 30.Connected to port 30. Escape sequence is ESC A TEST
Hello I am console 0
[host:~]$ cat < /dev/ttyS0 >>>As shown, you can see the same characters appear on the Console 0 host:
Connecting to Device Port 30.Connected to port 30. Escape sequence is ESC A
<Typed Hello console 0 redirect.>
[host:~]$
Hello console 0 redirect. >>> Message coming from console line.
[sysadmin-vm:0_RP0:~]$ stty -F /dev/hvc0 -ignpar -ignbrk[sysadmin-vm:0_RP0:~]$
[Console Server ]> c d d 30
Connecting to Device Port 30.Connected to port 30. Escape sequence is ESC A
sysadmin-vm:0_RP0# run
Thu Mar 12 05:18:14.486 UTC
[sysadmin-vm:0_RP0:~]$ stty -F /dev/hvc0 -ignpar -ignbrk
[sysadmin-vm:0_RP0:~]$
Revision | Publish Date | Comments |
---|---|---|
1.0 |
12-May-2015 |
Initial Release |