Vsrp Fast Start - Dell PowerConnect B-RX Configuration Manual

NOTE
The VRID IP address must be in the same subnet as a real IP address configured on the VSRP
interface, but cannot be the same as a real IP address configured on the interface. Also, an IP
address cannot be configured for a virtual routing interface.
NOTE
Failover applies to both Layer 2 and Layer 3.
To specify an IP address to back up, enter a command such as the following at the configuration
level for the VRID.
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.
FastIron(configure)#vlan 100
FastIron(configure-vlan-100)#vsrp vrid 1
FastIron(configure-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.
FastIron(configure)#interface ethernet 1/1
FastIron(configure-if-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.
BigIron RX Series Configuration Guide
53-1001810-01
Configuring optional VSRP parameters
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