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Configuration Guide - Reliability

S2720, S5700, and S6720 V200R013C00

This document describes the configurations of Reliability, including BFD Configuration, VRRP Configuration, DLDP Configuration, Smart Link and Monitor Link Configuration, MAC Swap Loopback Configuration, EFM Configuration, CFM Configuration, Y.1731 Configuration.
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Configuring 802.1ag MAC Trace

Configuring 802.1ag MAC Trace

Context

Similar to IP traceroute, 802.1ag MAC trace monitors connectivity of a path between two MEPs.

802.1ag MAC trace can be only implemented on the network where the MD, MA, and MEP are configured.

Procedure

  1. A device is usually configured with multiple MDs and MAs. To determine failure points or the forwarding path for packets sent from a MEP to another MEP, perform either of the following operations on the device with a MEP at one end of the link to be tested.

    • MA view:

      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 trace mac-8021ag mep mep-id mep-id { md md-name ma ma-name { mac mac-address | remote-mep mep-id mep-id } | mac mac-address | remote-mep mep-id mep-id } [ interface interface-type interface-number | -t timeout | ttl ttl ] *

        A connectivity fault between the local device and the remote device is located.

      • The trace mac-8021ag command without md md-name and ma ma-name specified determines failure points or the forwarding path for packets sent from a MEP to another MEP in a specified MA.

      • The trace mac-8021ag command with md md-name and ma ma-name specified determines failure points or the forwarding path for packets sent from a MEP to another MEP based on the configured MA and MD.

    • All views except the MA view:

      Run trace mac-8021ag mep mep-id mep-id md md-name ma ma-name { mac mac-address | remote-mep mep-id mep-id } [ interface interface-type interface-number | -t timeout | ttl ttl ] *

      A connectivity fault between the local device and the remote device is located.

    When performing 802.1ag MAC trace, ensure that:

    • The MA has been associated with a VLAN.

    • The MEP has been configured in the MA.

    • The outbound interface (if specified) cannot be the interface on which an inward-facing MEP is configured. The interface must join the VLAN associated with the MA.

    • If the destination node is an RMEP, either mac mac-address or remote-mep mep-id mep-id can be specified. If remote-mep mep-id mep-id is specified, the RMEP must have been created using the remote-mep command and the bridge MAC address of the device on which the RMEP is located must be specified.

    • If the destination node is a MIP, specify mac mac-address.

    • If the forwarding entry of the destination node does not exist in the MAC address table, interface interface-type interface-number must be specified.

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Updated: 2019-04-04

Document ID: EDOC1100065682

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