Enabling The Mac Swap Loopback Function; Disabling The Mac Swap Loopback Function - Huawei Quidway S3700 Series Configuration Manual

Quidway S3700 Series Ethernet Switches
Configuration Guide - Reliability
When a local MAC swap test is performed on an interface, services on the interface are
interrupted, but services on other interfaces are not affected. If a large number of test packets
are sent, test packets occupy bandwidth of other services on the interface that sends test packets
back to the tester.
If single VLAN tag is configured on the S3700, the test packets cannot be double-tagged.
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9.3.3 Enabling the MAC Swap Loopback Function

This section describes how to enable the MAC swap loopback function.
Context
A loopback test deteriorates network performance. If a large number of test packets are sent,
bandwidth of other services is occupied. To ensure network performance, enable the MAC swap
loopback function when the loopback test begins and disable it immediately after the loopback
test is complete.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
MAC swap loopback tests cannot be performed on an Eth-Trunk interface or its member
interfaces.
Step 3 Run:
loopback swap-mac start
The MAC swap loopback function is enabled.
This is a one-time command and is not saved in the configuration file.
To ensure service provisioning on the interface, run the loopback swap-mac stop command to
disable the MAC swap loopback function immediately after the loopback test is complete.
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9.3.4 Disabling the MAC Swap Loopback Function

This section describes how to disable the MAC swap loopback function.
Issue 01 (2011-10-26)
NOTE
The S3700EI and S3700SI do not support the inner-vlan inner-vlan-id parameter.
CAUTION
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