Administration of the Avaya G350 Media Gateway - Avaya Support

Configuring VRRPIn VRRP, two or more physical routers can be associated with a virtual router, thus achievingextreme reliability. In a VRRP environment, host stations interact with the virtual router. Thestations are not aware that this router is a virtual router, and are not affected when a new routertakes over the role of master router. Thus, VRRP is fully interoperable with any host station.You can activate VRRP on an interface using a single command while allowing for thenecessary fine-tuning of the many VRRP parameters. For a detailed description of VRRP, seeVRRP standards and published literature.VRRP configuration exampleThe following diagram illustrates an example of a VRRP configuration:Figure 15: VRRP configuration exampleThere is one main router on IP subnet 20.20.20.0, such as a G350, P333R, C460, or any routerthat supports VRRP, and a backup router. You can configure more backup routers.● The G350 itself must have an interface on the IP subnetwork, for example, 20.20.20.2●●●Configure all the routers under the same VRID, for example,1.You must configure the routers per VLAN.An assigned VRID must not be used in the network, even in a different VLANWhen router configuration is complete and the network is up, the main router for eachvirtual router is selected according to the following order of preference:- The virtual router IP address is also the router’s interface IP address.- It has the highest priority (you can configure this parameter).- It has the highest IP address if the previous conditions do not apply.Issue 3 January 2005 199