Dell FCX624-S Laptop User Manual


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PowerConnect B-Series FCX Configuration Guide 371
53-1002266-01
Virtual Switch Redundancy Protocol (VSRP)
10
VSRP does not require you to specify an IP address. If you do not specify an address, VSRP
provides Layer 2 redundancy. If you do specify an address, VSRP provides Layer 2 and Layer 3
redundancy.
The Layer 3 redundancy support is the same as VRRPE support. For information, refer to Chapter
31, “Configuring VRRP and VRRPE”.
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.
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.
PowerConnect(config-vlan-200-vrid-1)#ip-address 10.10.10.1
Syntax: [no] ip-address <ip-addr>
Changing the backup priority
When you enter the backup command to configure the device as a VSRP Backup for the VRID, you
also can change the backup priority and the track priority:
The backup priority is used for election of the Master. The VSRP Backup with the highest
priority value for the VRID is elected as the Master for that VRID. The default priority is 100. If
two or more Backups are tied with the highest priority, the Backup with the highest IP address
becomes the Master for the VRID.
The track priority is used with the track port feature. Refer to “VSRP priority calculation” on
page 360 and “Changing the default track priority” on page 374.
To change the backup priority, enter a command such as the following at the configuration level for
the VRID.
PowerConnect(config-vlan-200-vrid-1)#backup priority 75
Syntax: [no] backup [priority <value>] [track-priority <value>]
The priority <value> parameter specifies the backup priority for this interface and VRID. Specify a
value as follows:
For VRRP, specify a value from 3 – 254. The default is 100.
For VSRP and VRRP-E, specify a value from 6 – 255. The default is 100.
For a description of the track-priority <value> parameter, refer to “Changing the default track
priority” on page 374.
Saving the timer values received from the master
The Hello messages sent by a VRID master contain the VRID values for the following VSRP timers:
Hello interval
Dead interval
Backup Hello interval