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Configuration Guide - Reliability

S7700 and S9700 V200R011C10

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 Multicast MAC Ping

Configuring Multicast MAC Ping


The destination MAC address of multicast MAC ping is a multicast MAC address. Multicast MAC ping provides two functions, that is, acknowledging faults and discovering RMEPs.
  • Acknowledging faults: Multicast MAC ping provides the fault acknowledgement function similar to that provided by 802.1ag MAC ping. In a multicast MAC ping test, test packets are sent to test whether the path from the local device to the destination device is reachable. Multicast MAC ping can acknowledge the faults of links between multiple MEPs once.

  • Discovering RMEPs: All RMEPs in the MA can be discovered.

    For example, there are three MEPs in an MA: MEP1, MEP2, and MEP3. After multicast MAC ping is configured on MEP1, MEP1 sends multicast LBMs. After MEP2 and MEP3 receive the LBM, they reply with an LBR. The LBR carries the MAC address of MEP2 or MEP3, MEP ID, and delay. Before configuring the remote-mep command on MEP1, you can configure multicast MAC ping to detect all RMEPs in an MA.

Implementation of multicast MAC ping depends on the maintenance domain (MD), maintenance association (MA), and maintenance association end point (MEP). Therefore, multicast MAC ping can be performed only on a network with MDs, MAs, and MEPs configured.

Perform the following steps on the edge device in an MA.


  1. Run system-view

    The system view is displayed.

  2. Run cfm md md-name

    The MD view is displayed.

  3. Run ma ma-name

    The MA view is displayed.

  4. Run ping mac multicast mep mep-id [ -c count | -p priority-value | -t timeout ] *

    Multicast MAC ping is configured.

Updated: 2019-10-18

N. documento: EDOC1000178318


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