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Configuration Guide - Reliability

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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Configuring Remote MAC Swap Loopback

Configuring Remote MAC Swap Loopback

Context

Before performing a remote MAC swap loopback test, configure the source MAC address, destination MAC address, and VLAN ID of test packets on the Switch. Only the packets with the specified source MAC address, destination MAC address, and VLAN ID are looped back.

A remote MAC swap loopback test modifies only Ethernet frames matching the MAC swap loopback configuration on an interface, and other Ethernet frames can still be forwarded on the interface. However, if a large number of test packets are sent, test packets occupy bandwidth of other services on the interface.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    interface interface-type interface-number

    The interface view is displayed.

    MAC swap loopback tests cannot be performed on Eth-Trunk interfaces or their member interfaces.

  3. Run:

    loopback remote swap-mac source-mac source-mac-address dest-mac dest-mac-address vlan vlan-id [ inner-vlan inner-vlan-id ] [ timeout { time-value | none } ]

    Remote MAC swap loopback is configured.

    NOTE:

    The S1720GFR, S1720GW-E, S1720GWR-E, S1720GW, S1720GWR, S2720, S2750, S5700LI, S5720LI, S5720S-LI, S5700S-LI, S5710-X-LI, S5720SI, and S5720S-SI do not support the inner-vlan inner-vlan-id parameter.

    QinQ and MAC swap loopback cannot be used simultaneously on a loopback interface of the S1720GFR, S1720GW-E, S1720GWR-E, S1720GW, S1720GWR, S2720, S2750, S5700LI, S5720LI, S5720S-LI, S5700S-LI, S5710-X-LI, S5720SI, or S5720S-SI. If an outbound interface joins a VLAN in untagged mode, packets sent from the loopback interface carry tags.

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Updated: 2019-04-18

Document ID: EDOC1000141941

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