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Configuration Guide - Reliability

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Reliability, including BFD Configuration, VRRP Configuration, DLDP Configuration, Smart Link and Monitor Link Configuration, EFM Configuration, and CFM Configuration.
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Configuring Association Between VRRP and the Interface Status to Implement an Active/Standby Switchover

Configuring Association Between VRRP and the Interface Status to Implement an Active/Standby Switchover

Context

When the uplink interface of the master becomes faulty, VRRP cannot detect the status change of interfaces not in the VRRP group, causing service interruption. You can associate a VRRP group with the interface status. When the monitored interface is faulty, the priority of the master is reduced. This triggers an active/standby switchover and reduces the impact of the uplink interface fault on service forwarding.

When the fault is rectified, the original master restores its priority and becomes the master again to forward traffic.

NOTE:

The master and backup in the VRRP group must work in preemption mode. It is recommended that the preemption delay be zero on the backup and non-zero on the master.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The view of the interface on the master where a VRRP group is configured is displayed.

  3. On an Ethernet interface, run undo portswitch

    The interface is switched to Layer 3 mode.

    By default, an Ethernet interface works in Layer 2 mode.

    The mode switching function takes effect when the interface only has attribute configurations (for example, shutdown and description configurations). Alternatively, if configuration information supported by both Layer 2 and Layer 3 interfaces exists (for example, mode lacp and lacp system-id configurations), no configuration that is not supported after the working mode of the interface is switched can exist. If unsupported configurations exist on the interface, delete the configurations first and then run the undo portswitch command.

    NOTE:

    If many Ethernet interfaces need to be switched to Layer 3 mode, run the undo portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10> command in the system view to switch these interfaces to Layer 3 mode in batches.

  4. Run vrrp vrid virtual-router-id track interface interface-type interface-number [ increase value-increased | reduce value-reduced ]

    Association between VRRP and the interface status is configured.

    By default, when the monitored interface goes Down, the VRRP priority of the device decreases by 10.

    NOTE:
    • After the value by which the priority decreases is set, ensure that the priority of the backup is higher than the priority of the master.

    • The monitored interface cannot be a member of the Eth-Trunk interface.

  5. Run commit

    The configuration is committed.

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Updated: 2019-04-03

Document ID: EDOC1100075366

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