Vsrp fast start, Configuring vsrp fast start – Brocade BigIron RX Series Configuration Guide User Manual

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BigIron RX Series Configuration Guide

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Configuring optional VSRP parameters

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BigIron RX(config-vlan-200-vrid-1)# ip-address 10.10.10.1

Syntax: [no] ip-address <ip-addr>

VSRP fast start

VSRP fast start allows non-Brocade or non-VSRP aware devices that are connected to a Brocade
device that is the VSRP Master to quickly switchover to the new Master when a VSRP failover
occurs

This feature causes the port on a VSRP Master to restart when a VSRP failover occurs. When the
port shuts down at the start of the restart, ports on the non-VSRP aware devices that are
connected to the VSRP Master flush the MAC address they have learned for the VSRP master. After
a specified time, the port on the previous VSRP Master (which now becomes the Backup) returns
back online. Ports on the non-VSRP aware devices switch over to the new Master and learn its MAC
address.

Configuring VSRP fast start

The VSRP fast start feature can be enabled on a VSRP-configured Brocade device, either on the
VLAN to which the VRID of the VSRP-configured device belongs (globally) or on a port that belongs
to the VRID.

To globally configure a VSRP-configured device to shut down its ports when a failover occurs, then
restart after five seconds, enter the following command.

BigIron RX(config)# vlan 100

BigIron RX(config-vlan-100)# vsrp vrid 1

BigIron RX(config-vlan-100-vrid-1)# fast-start 5

Syntax: [no] fast-ports <seconds>

This command shuts down all the ports that belong to the VLAN when a failover occurs. All the
ports will have the specified VRID.

To configure a single port on a VSRP-configured device to shut down when a failover occurs, then
restart after a period of time, enter the following command.

BigIron RX(config)# interface ethernet 1/1

BigIron RX(config-if-e10000-1/1)# vsrp fast-start 5

Syntax: [no] vsrp fast-start <seconds>

In both commands, the <seconds> parameter instructs the VSRP Master to shut down its port for
the specified number of seconds before it starts back up. Enter a value between 1 – 120 seconds.
The default is 1 second.

Displaying ports that have the VSRP fast start feature enabled

The show vsrp vrid command shows the ports on which the VSRP fast start feature is enabled.

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