Export Default Metric; Configuring Vrrp; Overview Of Vrrp - Avaya G350 Administration

G350 allows the user to globally disable redistribution of static routes to RIP, and separately to globally
disable redistribution of static routes to OSPF. In addition you can configure, on a per static route basis,
whether the route is to be redistributed to RIP and OSPF, and what metric to use (in the range of 1-15).
The default state is to allow the route to be redistributed at metric 1. When static routes are redistributed
to OSPF, they are always redistributed as external type 2.
Use the
redistribute
the redistribute

Export default metric

The Avaya G350 Media Gateway enables you to configure the metric to be used in updates that are
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
Router OSPF contexts. This value is used for all types of redistributed routes, regardless of the protocol
from which the route was learned.

Configuring VRRP

This section provides information about configuring VRRP to provide router redundancy and load
balancing and includes the following topics:
•

Overview of VRRP

•
VRRP configuration example
one backup router
•
VRRP commands
Overview of VRRP
Virtual Router Redundancy Protocol (VRRP) is an IETF protocol designed to support redundancy 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 are required.
The concept underlying VRRP is that a router can backup other routers, in addition to performing its
primary routing functions. This redundancy is achieved by introducing the concept of a virtual router. A
virtual router is a routing entity associated with multiple physical routers. One of the physical routers
with which the virtual router is associated performs the routing functions. This router is known as the
master router. For each virtual router, VRRP selects a master router. If the selected master router fails,
another router is selected as master router.
In VRRP, two or more physical routers can be associated with a virtual router, thus achieving extreme
reliability. In a VRRP environment, host stations interact with the virtual router. The stations are not
aware that this router is a virtual router, and are not affected when a new router takes over the role of
master router. Thus, VRRP is fully interoperable with any host station.
Administration of the Avaya G350 Media Gateway
June 2004
command in the Router RIP context to configure route redistribution into RIP. Use
command in the Router OSPF context to configure route redistribution into OSPF.
— an overview of the VRRP protocol
— an example of a VRRP configuration with one main router and
— a list and descriptions of CLI commands used to configure VRRP
command from within the Router RIP or
default-metric
Configuring the router
Configuring VRRP
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