Service Groups

This feature provides the ability to apply an aggregate QoS service policy across multiple VLAN subinterfaces or service instances that are on the same physical interface. The Service Group feature allows network administrators to create service groups, add members (such as service instances) to those service groups, and apply service policies to the groups. The service policies contain the aggregate features (such as traffic policing and queueing) that can be applied to the groups. These service policies are in compliance with the Service-Level Agreement (SLA) negotiated between the service provider and the subscribers.

Restrictions for Service Groups

  • Only EFP service instances, routed sub-interfaces and aggregate port-channel sub-interfaces can be added as members of service groups.

    Each service instance or sub-interface can belong to only one service group at time.

  • The service group must exist before any member can join the group.

  • All members of a service group must reside on the same physical interface or same aggregate port-channel interface.

  • Sub-interfaces or service instances that are members of a service group cannot have a QoS policy applied to the interfaces, even if the service group does not have a QoS policy applied.

  • MPOL is not supported on aggregate port-channel when policy is applied on aggregated port-channel main interface, port-channel sub-interface cannot be attached by any policy, or be configured as a member of a service-group.

  • Sub-interface belongs to service group and sub-interface applied with service-policy cannot be configured on the same aggregate port-channel simultaneously.

  • Each sub-interface belongs to only one service group at a time.

  • Interfaces that are a member of a service group cannot have a QoS policy applied.

  • A batch configuration including both "define service-group" and "add sub-interface to service-group" may result in membership error, and vice versa in the unconfiguration.

    So it is recommended to define the service-group before adding subinterfaces or service instances to it, and removing them from the service-group before deleting the service-group or deleting the subinterfaces or service instances.

Information About Service Groups

Service Instances and Service Groups

A service instance is a configuration object (container) that holds all management and control plane attributes and parameters that apply to that service instance on a per-port basis. Different service instances that correspond to the same Ethernet Virtual Connection (EVC) must share the same name. Service instances are associated with a global EVC object through their shared name.

The Service Groups feature allows you to create service groups and apply aggregate features to those service groups. Service groups are created with input and output policies. Members join these groups by configuring the group ID in their configuration.

Make note of the following actions when enabling the service group feature:

  • A service group must be created before a QoS policy can be configured on the service group.

  • A service group sub-interface or service instance must be created before it can be bound to its group interface.

When disabling the service group feature:

  • A service group sub-interface or service instance must be unbound from the service group interface before the service member interface is deleted.

  • A service group sub-interface or service instance unbound from the service group interface before the service group interface is deleted.

  • A QoS policy must be removed from the service group interface before the service group interface is deleted.

How to Configure Service Groups

Creating a Service Group

Before you begin

In this procedure, you need to specify the name of a QoS policy to be attached to the service group. The QoS policy must already exist.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. service-group service-group-identifier
  4. description descriptive-text
  5. service-policy {input | output } policy-map-name
  6. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

service-group service-group-identifier

Example:


Device(config)# service-group 20

Creates a service group and enters service-group configuration mode.

  • Enter the service group number. The number of service groups that can be created varies by Device.

Step 4

description descriptive-text

Example:


Device(config-service-group)# description subscriber account number 105AB1

(Optional) Creates a description of the service group.

  • Enter a description (for example, additional information about the group) of the service group. Descriptions can be a maximum of 240 characters.

Step 5

service-policy {input | output } policy-map-name

Example:


Device(config-service-group)# service-policy input policy1

(Optional) Attaches a policy map to the service group, in either the ingress (input) or egress (output) direction.

  • Enter either the input or output keyword and the name of the previously created policy map.

Step 6

end

Example:


Device(config-service-group)# end

(Optional) Returns to privileged EXEC mode.

Adding or Deleting Service Group Members


Note

The following restrictions apply to service group members:

  • A member can join only one service group at a time.

  • All members of a service group must reside on the same physical interface.

  • Service instances cannot join the same group from multiple interfaces. Group members must come from the same interface, as shown in the sample configuration below: 


interface GigabitEthernet 2/0/0
service instance 1 ethernet
group 32
service instance 2 ethernet
group 32
interface GigabitEthernet 2/0/0.2
encapsulation dot1q 2
group 37
interface GigabitEthernet 2/0/1
service instance 1 ethernet
group 32  |<--Disallowed because this group has members in g2/0/0 already |
>

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. interface type number
  4. service instance service-instance-number ethernet
  5. group service-group-identifier
  6. no group service-group-identifier
  7. exit
  8. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

interface type number

Example:


Device(config)# interface GigabitEthernet 0/1/0

Configures an interface and enters interface configuration mode.

Step 4

service instance service-instance-number ethernet

Example:


Device(config-if)# service instance 200 ethernet

Specifies the service instance to be added or deleted from a service group and enters service configuration mode.

Step 5

group service-group-identifier

Example:


Device(config-if-srv)# group 20

Number of the service group specified by the member will be added.

Step 6

no group service-group-identifier

Example:


Device(config-if-srv)# no group 20

(Optional) Number of the service group specified by the member will be added.

Step 7

exit

Example:


Device(config-if-srv)# exit

(Optional) Returns to interface configuration mode.

Step 8

end

Example:


Device(config-if-srv)# end

(Optional) Returns to privileged EXEC mode.

Deleting a Service Group

Before you begin

  • A service member interface must be unbound from the service group interface before the service group interface is deleted.

  • A QoS policy must be removed from the service group interface before the service group interface is deleted.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. no service-group service-group-identifier
  4. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

no service-group service-group-identifier

Example:


Device(config)# no service-group 20

Deletes a service group and deletes all members from the service group.

  • Enter the service group number to be deleted.

Note

 

When you delete a service group, all members of the service group are automatically removed from the service group.

Step 4

end

Example:


Device(config)# end

(Optional) Exits global configuration mode.

Verifying the Service Group Configuration

SUMMARY STEPS

  1. enable
  2. show running-config service-group
  3. show service-group {service-group-identifier | all }
  4. show service-group interface type number
  5. show service-group stats
  6. show service-group state
  7. show service-group traffic-stats
  8. show policy-map interface type number service group {service-group-identifier
  9. show policy-map target service-group {service-group-identifier }
  10. show ethernet service instance [detail ]
  11. clear service-group traffic-stats
  12. debug service-group {all | error | feature | group | interface | ipc | member | qos | stats }

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

show running-config service-group

Example:


Device# show running-config service-group

(Optional) Displays the running service-group configuration.

Step 3

show service-group {service-group-identifier | all }

Example:


Device# show service-group all

(Optional) Displays service-group configuration information for one or all service groups.

Step 4

show service-group interface type number

Example:


Device# show service-group interface gigabitethernet 3/1

(Optional) Displays service-group membership information by interface.

  • Enter the interface type and number.

Step 5

show service-group stats

Example:


Device# show service-group stats

(Optional) Displays service-group statistical information.

Step 6

show service-group state

Example:


Device# show service-group state

(Optional) Displays state information about service groups.

Step 7

show service-group traffic-stats

Example:


Device# show service-group traffic-stats

(Optional) Displays traffic statistics for all the members of a service group.

  • The information displayed is the combined total of the traffic statistics for all members.

Step 8

show policy-map interface type number service group {service-group-identifier

Example:


Device# show policy-map interface gigabitEthernet 9/5 service group

(Optional) Displays policy-map information for service groups.

  • Enter the interface type and number.

Step 9

show policy-map target service-group {service-group-identifier }

Example:


Device# show policy-map target service-group 1

(Optional) Displays policy-map information for service groups that have members attached to the specified interface.

  • Enter the service group identifier.

Step 10

show ethernet service instance [detail ]

Example:


Device# show ethernet service instance detail

(Optional) Displays information about the service instances.

Note

 

To display the service group number, use the detail keyword.

Step 11

clear service-group traffic-stats

Example:


Device# clear service-group traffic-stats

(Optional) Clears the traffic statistics for the service group.

Note

 

Clearing the traffic statistics for the service group does not clear the traffic statistics for the group members. To clear the traffic statistics for group members, use the clear ethernet service instance command. For more information about the clear ethernet service instance command, see the Cisco IOS Carrier Ethernet Command Reference .

Step 12

debug service-group {all | error | feature | group | interface | ipc | member | qos | stats }

Example:


Device# debug service-group qos

(Optional) Debugs service-group events and errors.

Adding or Deleting a Subinterface from a Service Group


Note

If a subinterface is already a member of a group, you cannot add it to another group. To move a subinterface, first delete it from the current group, then add it to the new group.

>

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. interface type number
  4. group service-group-identifier
  5. no group service-group-identifier
  6. exit
  7. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

interface type number

Example:


Device(config)# interface GigabitEthernet 1/1/0.30


Device(config)# interface range GigabitEthernet 1/1/0.30 - GigabitEthernet 1/1/0.36

Configures a subinterface and enters subinterface configuration mode.

  • Enter the interface type and the subinterface number.

or

Configures a range of subinterfaces and enters subinterface configuration mode.

  • Enter the interface types and the subinterface numbers.

Step 4

group service-group-identifier

Example:


Device(config-subif)# group 20

Number of the service group to which the subinterfaces will be added.

  • Enter the service group number.

Step 5

no group service-group-identifier

Example:


Device(config-subif)# no group 30

(Optional) Number of the service group from which the subinterfaces will be deleted.

  • Enter the service group number.

Step 6

exit

Example:


Device(config-subif)# exit

(Optional) Returns to interface configuration mode.

Step 7

end

Example:


Device(config-subif)# end

(Optional) Returns to privileged EXEC mode.

Verifying the Subinterface Configuration

SUMMARY STEPS

  1. enable
  2. show running-config service-group
  3. show service-group {service-group-identifier | all }
  4. show service-group interface type number
  5. show policy-map target service-group service-group-identifier
  6. show service-group stats
  7. show service-group state
  8. show service-group traffic-stats
  9. clear service-group traffic-stats
  10. debug service-group {all | error | feature | group | interface | ipc | member | qos | stats }

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

show running-config service-group

Example:


Device# show running-config service-group

(Optional) Displays the running service-group configuration.

Step 3

show service-group {service-group-identifier | all }

Example:


Device# show service-group all

(Optional) Displays service-group configuration information for one or all service groups.

Step 4

show service-group interface type number

Example:


Device# show service-group interface gigabitethernet 3/1

(Optional) Displays service-group membership information by interface.

  • Enter the interface type and number.

Step 5

show policy-map target service-group service-group-identifier

Example:


Device# show policy-map target service-group 1

(Optional) Displays the policy-map information for all service groups or the specified service group.

  • Enter the target and service group.

Step 6

show service-group stats

Example:


Device# show service-group stats

(Optional) Displays service-group statistical information.

Step 7

show service-group state

Example:


Device# show service-group state

(Optional) Displays state information about service groups.

Step 8

show service-group traffic-stats

Example:


Device# show service-group traffic-stats

(Optional) Displays the traffic statistics for all the members of a service group.

  • The information displayed is the combined total of the traffic statistics for all members.

Step 9

clear service-group traffic-stats

Example:


Device# clear service-group traffic-stats

(Optional) Clears the traffic statistics for the service group.

Note

 

Clearing the traffic statistics for the service group does not clear the traffic statistics for the group members. To clear the traffic statistics for group members, use the clear ethernet service instance command. For more information about the clear ethernet service instance command, see the Cisco IOS Carrier Ethernet Command Reference.

Step 10

debug service-group {all | error | feature | group | interface | ipc | member | qos | stats }

Example:


Device# debug service-group qos

(Optional) Debugs service-group events and errors.

Configuration Examples for Service Groups

Example Creating a Service Group

In the following example, service group 20 has been created: 


Device> enable
Device# configure terminal
Device(config)# service-group 20
Device(config-service-group)# description account number 105AB1
Device(config-service-group)# service-policy input policy1
Device(config-service-group)# end

Example Adding Service Instance Members to a Service Group

In the following example, service instance 200 will be added to service group 20: 


Device> enable 

Device# configure terminal 

Device(config)# interface GigabitEthernet 1/0 

Device(config-if)# service instance 200 ethernet 

Device(config-if-srv)# group 20 

Device(config-if-srv)# end

Example Adding Subinterfaces to a Service Group

In the following example, subinterface g3/7.12 will be added to service group 10: 


Device> enable 

Device# configure terminal 

Device(config)# interface GigabitEthernet  3/7.12

Device(config-subif)# group 10

Device(config-subif)# end

Example Deleting Service Instance Members from a Service Group

In the following example, service instance 300 will be deleted from service group 30 on a port channel: 


Device> enable
Device# configure terminal
Device(config)# interface GigabitEthernet 1/0.56 or 
Device(config-if)# service instance 300 ethernet
Device(config-if-srv)# no group 30
Device(config-if-srv)# end

Example Deleting Subinterfaces from a Service Group

In the following example, subinterface g3/7.12 will be deleted from service group 10: 


Device> enable
Device# configure terminal
Device(config)# interface g3/7.12
Device(config-subif)# no group 10
Device(config-subif)# end

Example Deleting a Service Group

In the following example, service group 20 will be deleted: 


Device> enable 

Device# configure terminal 

Device(config)# no  service-group 20 

Device(config)# end

Example Verifying the Service Group Configuration

This section contains sample output from the show policy-map target service-group command. The show policy-map target service-group command displays policy-map information for service groups.


Note

This command is one of several that you can use to verify the service-group configuration. For additional commands that can be used, see Verifying the Service Group Configuration.

In the following example, service group 1 is specified. Service group 1 contains two policy maps (service policies), policy1 and policy2. Traffic policing is enabled in the EVC policy map. Traffic queuing is enabled in the ISG policy map. 


Device# show policy-map target service-group 1
 
 GigabitEthernet9/5: Service Group 1
 
  Service-policy input: policy1
 
    Class-map: class-default (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0000 bps, drop rate 0000 bps
      Match: any 
      police:
          cir 200000 bps, bc 6250 bytes
        conformed 0 packets, 0 bytes; actions:
          transmit
        exceeded 0 packets, 0 bytes; actions:
          drop
        conformed 0000 bps, exceed 0000 bps
 
  Service-policy output: policy2
 
  Counters last updated 00:00:34 ago
    Class-map: class-default (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0000 bps, drop rate 0000 bps
      Match: any 
      Queueing
      queue limit 131072 packets
      (queue depth/total drops/no-buffer drops) 0/0/0
      (pkts output/bytes output) 0/0
      bandwidth remaining ratio 2

How to Configure Service-group Support on Aggregate Port-channel

Adding Service Instance Members to a Service Group

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. service-group service-group-identifier
  4. service-policy {input | output } policy-map-name
  5. platform qos port-channel-aggregate port-channel-number
  6. interface port-channel port-channel-number
  7. interface interface
  8. channel-group number
  9. interface port-channel port-channel-number.subinterface-number
  10. encapsulation dot1Q vlan-id second-dot1q vlan-id
  11. group service-group-identifier
  12. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Device> enable

Enables privileged EXEC mode.

Enter your password if prompted.

Step 2

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 3

service-group service-group-identifier

Example:

Device(config)# service-group 10

Adds a service group and all members to the service group.

Step 4

service-policy {input | output } policy-map-name

Example:

Device(config-service-group)# service-policy input policy1
Device(config-service-group)# service-policy output policy2

(Optional) Attaches a policy map to the service group, in either the ingress (input) or egress (output) direction.

  • Enter either the input or output keyword and the name of the previously created policy map.

Step 5

platform qos port-channel-aggregate port-channel-number

Example:

Device(config)# platform qos port-channel-aggregate 1

Enables aggregate mode for a port-channel interface.

Note

 

It must be configured before a port-channel is created. Enable aggregate mode before a port-channel interface is attached by policy, or subinterfaces of the port-channel to be added to a service-group.

Step 6

interface port-channel port-channel-number

Example:

Device(config)# interface port-channel 1

Enters interface configuration mode to configure a specific port channel.

Step 7

interface interface

Example:

Device(config)# interface g0/0/0

Configures physical interface as a member link of the port-channel.

Step 8

channel-group number

Example:

Device(config)# channel-group 1

Adds the physical interface to the port-channel 1 as a member link.

Step 9

interface port-channel port-channel-number.subinterface-number

Example:

Device(config)# interface port-channel 1.10

Enters interface configuration mode to configure a specific port channel subinterface.

Step 10

encapsulation dot1Q vlan-id second-dot1q vlan-id

Example:

Device(config-subif)# encapsulation dot1Q 10 second-dot1q 11

Defines the matching criteria to map Q-in-Q ingress frames on the port-channel subinterface.

Note

 

Configuring second-dot1q is optional.

Step 11

group service-group-identifier

Example:

Device(config-subif)# group 10

Adds the port-channel sub interface to the specified service-group.

Step 12

end

Example:


Device(config-subif)# end

Returns to privileged EXEC mode.

Deleting Service Instance Members from a Service Group

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. interface port-channel port-channel-number.subinterface-number
  4. no group service-group-identifier
  5. no service-group service-group-identifier
  6. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Device> enable

Enables privileged EXEC mode.

Enter your password if prompted.

Step 2

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 3

interface port-channel port-channel-number.subinterface-number

Example:

Device(config)# interface port-channel 1.10

Enters interface configuration mode to configure a specific port channel subinterface.

Step 4

no group service-group-identifier

Example:

Device(config-subif)# no group 10

Removes the port-channel sub-interface from the service group specified by the number.

Step 5

no service-group service-group-identifier

Example:

Device(config-subif)# no service-group 10

Deletes a service group.

Note

 

All members should be removed from the service group first.

Step 6

end

Example:


Device(config)# end

Returns to privileged EXEC mode.

Configuration Examples for Service-group on Aggregate Port-channel

Example: Adding Service Instance Members to a Service Group

Device> enable
Device# configure terminal
Device(config)# service-group 10
Device(config-service-group)# service-policy input policy1
Device(config-service-group)# service-policy output policy2
Device(config)# platform qos port-channel-aggregate 1
Device(config)# interface port-channel 1
Device(config)# interface g0/0/0
Device(config-if)# channel-group 1
Device(config)# interface port-channel 1.10
Device(config-subif)# encapsulation dot1Q 10 second-dot1q 11
Device(config-subif)# group 10
Device(config-subif)# end

Example: Deleting Service Instance Members to a Service Group

Device> enable
Device# configure terminal
Device(config)# interface port-channel 1.10
Device(config-subif)# no group 10
Device(config-subif)# no service-group 10
Device(config)# end

Additional References

Related Documents

Related Topic

Document Title

QoS commands: complete command syntax, command modes, command history, defaults, usage guidelines, and examples.

Cisco IOS Quality of Service Solutions Command Reference

Debug commands: complete command syntax, command modes, command history, defaults, usage guidelines, and examples.

Cisco IOS Debug Command Reference

MQC, policy maps

"Applying QoS Features Using the MQC" module

Service instance configuration information and concepts

Cisco IOS Carrier Ethernet Configuration Guide

Service instance commands

Cisco IOS Carrier Ethernet Command Reference

Standards

Standard

Title

No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.

--

MIBs

MIB

MIBs Link

No new or modified MIBs are supported by this feature, and support for existing MIBs has not been modified by this feature.

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC

Title

No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature.

--

Technical Assistance

Description

Link

The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html

Feature Information for Service Groups

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1. Feature Information for Service Groups

Service Groups

12.2(33)SRE

The Service Groups feature allows network administrators to create service groups, add members (such as service instances) to those service groups, and apply service policies (also known as policy maps) to those newly created groups.

In Release 12.2(33)SRE, this feature was introduced on the Cisco 7600 series router.

The following commands were introduced or modified: clear service-group traffic-stats , debug service-group , description , group, service-group , service instance ethernet, service-policy, show policy-map interface service group , show running-config service-group , show service-group , show service-group interface , show service-group state , show service-group stats , show service-group traffic-stats .