Administration of the Avaya G350 Media Gateway - Avaya Support

Configuring the routerand what metric to use (in the range of 1-15). The default state is to allow the route to beredistributed at metric 1. When static routes are redistributed to OSPF, they are alwaysredistributed as external type 2.Use the redistribute command in the Router RIP context to configure route redistributioninto RIP. Use the redistribute command in the Router OSPF context to configure routeredistribution into OSPF.Export default metricThe Avaya G350 Media Gateway enables you to configure the metric to be used in updates thatare redistributed from one routing protocol to another.In RIP, the default is 1 and the maximum value is 16. In OSPF, the default is 20.Set this value before redistribution using the default-metric command from within theRouter RIP or Router OSPF contexts. This value is used for all types of redistributed routes,regardless of the protocol from which the route was learned.Configuring VRRPThis section provides information about configuring VRRP to provide router redundancy andload balancing and includes the following topics:●●●Overview of VRRP — an overview of the VRRP protocolVRRP configuration example — an example of a VRRP configuration with one main routerand one backup routerVRRP commands — a list and descriptions of CLI commands used to configure VRRPOverview of VRRPVirtual Router Redundancy Protocol (VRRP) is an IETF protocol designed to supportredundancy of routers on the LAN and load balancing of traffic. VRRP is open to host stations,making it an ideal option when redundancy, load balancing, and ease of configuration arerequired.The concept underlying VRRP is that a router can backup other routers, in addition toperforming its primary routing functions. This redundancy is achieved by introducing theconcept of a virtual router. A virtual router is a routing entity associated with multiple physicalrouters. One of the physical routers with which the virtual router is associated performs therouting functions. This router is known as the master router. For each virtual router, VRRPselects a master router. If the selected master router fails, another router is selected as masterrouter.198 Administration of the Avaya G350 Media Gateway