
Use this method only if you do not have an extra IP address to use for
Selecting Configuration Parameters
Before you begin, plan your implementation by deciding how you want to set the following configuration parameters.
Priority
Hello Interval
Authentication
Priority Delta
Backup Address
VMAC Mode
Priority
The priority value determines which router takes over in the event of a failure; the router with the higher priority becomes the new master. The range of values for priority is 1 to 254. The default setting is 100.
Note
In Nokia’s
If two platforms have equivalent priorities, the platform that comes online and starts broadcasting VRRP advertisements first becomes the master. If there is a tie, the platform with the higher IP address is selected.
To prevent the unlikely event that the
You should set the priority to 254 for least the master platform in each VRID to provide a faster transition in the event of a failure. Using higher values can decrease the time it takes for a backup router to take over for a failed router by close to one second.
Note
Setting a higher priority shortens the transition time because the time interval for a backup to declare the master down is calculated as
Master_Down_Interval = (3 * Hello_interval) + Skew_time; and the skew time (seconds by
Nokia Network Voyager for IPSO 4.0 Reference Guide | 187 |