05-Layer 2—LAN Switching Configuration Guide

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11-Service loopback group configuration
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Configuring service loopback groups

About service loopback groups

A service loopback group contains one or multiple Ethernet ports for looping packets sent out by the device back to the device. This feature must work with other features. Member ports in a service loopback group are load balanced.

A service loopback group can provide only the telemetry stream services.

Restrictions and guidelines: Service loopback group configuration

When you add member ports to a service loopback group, follow these restrictions and guidelines:

·     Make sure the ports support the service type of the service loopback group and are not members of any other service loopback group.

·     Breakout interfaces cannot be assigned to service loopback groups.

When you apply service loopback groups to features, follow these restrictions and guidelines:

·     One service loopback group can be used by multiple features.

·     Do not delete a service loopback group that is being used by a feature.

Configuring a service loopback group

1.     Enter system view.

system-view

2.     Create a service loopback group and specify its service type.

service-loopback group group-id type telemetry-stream

You can configure only one service loopback group for a service type.

3.     Enter Layer 2 Ethernet interface view.

interface interface-type interface-number

4.     Assign the port to the service loopback group.

port service-loopback group group-id

By default, a port does not belong to a service loopback group.

 

CAUTION

CAUTION:

·     The configuration on a port is removed when it is assigned to a service loopback group. Make sure you fully understand the impact on your network when you assign a port to a service loopback group.

·     If a port is the only member of a referenced service loopback group, then removing that port from the group will disrupt the functionality of the telemetry stream.

Verifying and maintaining service loopback groups

To display information about service loopback groups, execute the following command in any view:

display service-loopback group [ group-id ]

 

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