Configuring Association Between Direct Routes and a VRRP Group

Usage Scenario

On a live network, a VRRP group serves as a gateway for users (including common users and base stations) to access the network. User-to-network traffic traverses the master device in the VRRP group, while network-to-user traffic travels along a path that a dynamic routing protocol selects. Therefore, user-to-network traffic and network-to-user traffic may along different paths, which interrupts services if firewalls are attached to devices in the VRRP group, complicates traffic monitoring or statistics collection, and increases costs.

To address the preceding problems, the routing protocol is expected to select a route passing through the master device so that the user-to-network and network-to-user traffic travels along the same path. Association between direct routes and a VRRP group can meet expectations by allowing the dynamic routing protocol to select a route based on the VRRP status.

Pre-configuration Tasks

Before associating direct routes with a VRRP group, complete the following tasks:

• Configure VRRP basic functions and create a VRRP group.
• Configure a dynamic routing protocol to ensure reachable routes among nodes.

With association between direct routes and a VRRP group, VRRP and an IGP cannot be configured on the same interface. If VRRP and an IGP are configured on the same interface, the IGP cannot inherit the route costs from the imported direct routes. As a result, the path selected by the IGP for network-to-user traffic may be different from the one on which user-to-network traffic is transmitted.