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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
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 protocol-information command in any view to check whether the VRRP version on each master is compatible with the mode in which VRRP Advertisement packets are sent.

    • If the version is incompatible with the mode, run the vrrp version { v2 | v3 } command in the system view to change the version.

    • If the version is compatible with the mode, go to step 3.

    NOTE:
    • A VRRPv2 group can only send and receive VRRPv2 Advertisement packets, and discards the received VRRPv3 Advertisement packets.
    • A VRRPv3 group can send and receive both VRRPv2 and VRRPv3 Advertisement packets. You can configure the mode in which VRRPv3 Advertisement packets are sent. The mode can be v2-only, v3-only, or v2v3-both.

  3. Run the display vrrp virtual-router-id command in any view to check whether the master uses 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 authentication 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 authentication 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, or a BFD session.

    • If the VRRP group is associated with the interface, or BFD session, flapping of the interface, or 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-mode 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-mode timer delay delay-value command to set a larger preemption delay.
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Updated: 2019-01-11

Document ID: EDOC1000176006

Views: 115857

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