Configure VRRP

Before you begin

To enable VRRP, you must have at least two routers with the same branch ID. VRRP changes require a complete configuration update on the devices

About this task

Virtual Router Redundancy Protocol (VRRP) allows multiple routers to function as a single logical routing unit. When using VRRP, routers that each have a different IP address share a VRRP ID and a virtual IP address that other network devices use as the router address. Routers that share a VRRP ID use VRRP to determine the state of other routers with the same VRRP ID. If one becomes unresponsive for a specific amount of time, VRRP uses the priority setting to determine which router will take over routing traffic.

Use the following steps to configure VRRP.

Procedure

  1. Toggle Enable VRRP to On.
  2. Enter the VLAN ID for the routed traffic.
  3. Enter the static subnet for the routed traffic.
  4. Indicate whether a router in the VRRP routing group is included in the redundancy.
  5. Enter the priority of the router.
    • High: This router handles the traffic.
    • Medium: This router handles the traffic when the high-priority router is offline.
    • Low: This router becomes active when the other priority routers are all offline.
  6. Enter a numeric VRRP ID.
  7. Enter the static virtual IP address that the routers share.
  8. Enter the interval that the routers will wait before advertising their availability (the default is one second).
  9. Select whether a higher-priority backup router preempts a lower-priority primary router.
  10. Select whether the router monitors the state of the WAN connection.
    If the primary router WAN connection is unresponsive, VRRP activates a backup router to handle traffic.