Configure Vlan Esrp Timer - Extreme Networks ExtremeWare Command Reference Manual

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ESRP Commands

configure vlan esrp timer

configure vlan <vlan name> esrp timer <timervalue> {esrp-nbr-timeout

<timeoutvalue>}

Configures the ESRP timer values.

Syntax Description

esrp-nbr-timeout

The default neighbor timeout is 3 times the

Usage Guidelines

The timer specifies the interval, in seconds, for exchanging keep-alive packets between the ESRP

switches for this VLAN. A lower value specifies a more frequent exchange of keep-alive messages,

resulting in the faster detection of a failover condition. The timer setting must be configured identically

for the VLAN across all participating switches. If your configuration contains more than 2,500 ESRP

VLANs and 256,000 FDB entries, we recommend a timer setting greater than 3 seconds.

The neighbor timeout specifies the amount of time that ESRP waits before considering the neighbor

down. The timeout value must be at least 3 times, but not more than 30 times the timervalue. Entering a

value outside of that range generates an error message.

In a large ESRP configuration, the slave ESRP VLAN might inadvertently become the master ESRP

VLAN. This can occur when FDB entries are flushed during a master-slave transition. To avoid this we

recommend the general neighbor timeout guidelines listed in Table 20.

Table 20: General neighbor timeout

Number of Domains

Number of VLANs

The following command configures the ESRP timer to 60 seconds and the ESRP neighbor timeout to 12

configure vlan esrp-1 esrp timer 60 esrp-nbr-timeout 12

Specifies a VLAN name.

Specifies the number of seconds between keep-alive packets. The range is 1

to 255 seconds.

Specifies the number of seconds after which an ESRP neighbor times out.

The range is 3 to 7650 seconds.

is 2 seconds.

Number of Active ports

Suggested Neighbor Timeout

ExtremeWare Software 7.3.0 Command Reference Guide

Extremeware 7.3.0