Configuring a VRRP-E slow-start timer

The slow-start timer is a VRRP-E interval timer that extends beyond the dead interval during a transition from the backup device that assumed the master role to the original master device that is back online and has a higher priority.

In a VRRP extended (VRRP-E) configuration, if a master device goes offline, the backup router with the highest priority takes over after the expiration of the dead interval timer. When the original master device is back online, you can configure a slow-start timer interval that extends the time interval beyond the dead interval before the original master device transitions back to the role of master device.

Use the configure terminal command to enter global configuration mode.
```
device# configure terminal
```
To globally enable VRRP-E, enter the router vrrp-extended command.
```
device(config)# router vrrp-extended
```
Enter the slow-start command with options to configure the interval, in seconds, and whether tracked-port state changes trigger the slow-start interval.
```
device(config-vrrpe-router)# slow-start 40 use-track-port restart
```

In this example, the slow-start timer interval is set to 40 seconds, and the slow-start timer also runs after the first and subsequent tracked-port state changes.

device# configure terminal
device(config)# router vrrp-extended
device(config-vrrpe-router)# slow-start 40 use-track-port restart

Contents

Configuring a VRRP-E slow-start timer