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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Common Configuration Errors

Common Configuration Errors

This section describes common faults caused by incorrect VRRP configurations and provides the troubleshooting procedure.

Multiple Masters Coexist in a VRRP Group

Fault Description

Multiple masters exist in a VRRP group.

Procedure

  1. Ping masters to check network connectivity between masters.

    • If the ping operation fails, check whether the network connection is correct.

    • If the ping operation is successful and the TTL value of the ping packet is 255, go to step 2.

  2. Run the display vrrp virtual-router-id command in any view to check whether the masters use the same virtual IP address, interval at which VRRP Advertisement packets are sent, authentication mode, and authentication key.

    • If the configured virtual IP addresses are different, run the vrrp vrid virtual-router-id virtual-ip virtual-address command to set the same virtual IP address.

    • If the intervals are different, run the vrrp vrid virtual-router-id timer advertise advertise-interval command to set the same interval.

    • If the authentication modes and keys are different, run the vrrp vrid virtual-router-id authentication-mode { simple { key | plain key | cipher cipher-key } | md5 md5-key } command to set the same authentication mode and key.

VRRP Group Status Changes Frequently

Fault Description

The VRRP group status changes frequently.

Procedure

  1. Run the display vrrp virtual-router-id command in any view to check whether the VRRP group is associated with an interface, an NQA test instance, or a BFD session.

    • If the VRRP group is associated with the interface, an NQA test instance, or a BFD session, flapping of the interface, an NQA test instance, or a BFD session causes VRRP group status flapping. Rectify the fault on the associated module.

    • If association is not configured, go to step 2.

  2. Run the display vrrp virtual-router-id command in any view to check the preemption delay of the VRRP group.

    • If the preemption delay is 0, run the vrrp vrid virtual-router-id preempt timer delay delay-value command in the view of the interface where the VRRP group is configured to set the non-0 preemption delay.

    • If the preemption is not 0, go to step 3.

  3. Run the vrrp vrid virtual-router-id timer advertise advertise-interval command in the view of the interface where the VRRP group is configured to set a larger interval at which VRRP Advertisement packets are sent, or run the vrrp vrid virtual-router-id preempt timer delay delay-value command to set a larger preemption delay.
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Updated: 2019-08-09

Document ID: EDOC1000041694

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