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Configuration Guide - IP Unicast Routing

S1720, S2700, S5700, and S6720 V200R011C10

This document describes IP Unicast Routing configurations supported by the switch, including the principle and configuration procedures of IP Routing Overview, Static Route, RIP, RIPng, OSPF, OSPFv3, IS-IS(IPv4), IS-IS(IPv6), BGP, Routing Policy ,and PBR, and provides configuration examples.
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Disabling Master/Slave Board Switching Triggered by Abnormal OSPF LSA Aging

Disabling Master/Slave Board Switching Triggered by Abnormal OSPF LSA Aging

Context

If the local device clock is faster than usual and the aging timer expires abnormally, the local device incorrectly clears all Router LSAs from the peer device, which causes route flapping and service interruptions. To resolve this issue, master/slave board switching triggered by abnormal OSPF LSA aging is automatically enabled. Master/slave board switching is triggered to restore network connections and service traffic when the following condition is met:

(Number of incorrectly cleared Router LSAs/Total number of Router LSAs) x 100% ≥ 80% (Router LSAs are those sent by the peer device to the local device)

To disable master/slave board switching triggered by abnormal OSPF LSA aging, run the ospf maxage-lsa auto-protect disable command.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run ospf maxage-lsa auto-protect disable

    The master/slave board switching triggered by abnormal OSPF LSA aging is disabled.

    By default, master/slave board switching triggered by abnormal OSPF LSA aging is enabled.

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Updated: 2019-10-21

Document ID: EDOC1000178171

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