Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 613)

Time scale values (Continued) TABLE 126
Timer Timer scale Timer value
2 1.5 seconds
Backup Hello interval 1 60 seconds
2 30 seconds
Hold-down interval 1 2 seconds
2 1 second
If you configure the device to receive its timer values from the Master, the Backup also receives the
timer scale value from the Master.
To change the timer scale, enter a command such as the following at the global CONFIG level of the
CLI.
device(config)# scale-timer 2
This command changes the scale to 2. All VSRP, VRRP, and VRRP-E timer values will be divided by 2.
Syntax: [no] scale-timer num
The num variable specifies the multiplier. You can specify a timer scale from 1 through 10. However,
Brocade recommends the timer scale of 1 or 2 for VRRP and VRRP-E.
NOTE
Be cautious when configuring the scale-timer command in a VRRP or VRRP-E scaled environment.
VSRP, VRRP, and VRRP-E are time-sensitive protocols and system behavior cannot be predicted
when the timers are scaled.
VRRP-E slow start timer
In a VRRP-E configuration, if a Master router goes down, the Backup router with the highest priority
takes over after expiration of the dead interval. When the original Master router comes back up again, it
takes over from the Backup router (which became the Master router when the original Master router
went down). By default, this transition from Backup back to Master takes place immediately. However,
you can configure the VRRP-E slow start timer feature, which causes a specified amount of time to
elapse between the time the Master is restored and when it takes over from the Backup. This interval
allows time for OSPF convergence when the Master is restored.
To set the IPv4 VRRP-E slow start timer to 30 seconds, enter the following commands.
device(config)#router vrrp-extended
device(config-VRRP-E-router)#slow-start 30
To set the IPv6 VRRP-E slow start timer to 60 seconds, enter the following commands.
device(config)#ipv6 router vrrp-extended
device(config-ipv6-VRRP-E-router)#slow-start 60
Syntax: [no] slow-start seconds
The seconds variable specifies a value from 1 through 255.
VRRP-E slow start timer
FastIron Ethernet Switch Layer 3 Routing Configuration Guide 613
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