User's Manual

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Chapter 59 BEIGRP Configuration
This chapter will detail the configuration process of BEIGRP dynamic routing protocol.
59.1 Overview
Brief introduction of BEIGRP routing protocol.
The technology used by BEIGRP is similar to distance vector routing protocol:
 The router only makes routing decisions with the information provided by directly connected
neighbours;
 The router only provides the routing information it uses to the directly connected
neighbors.But, BEIGRP has some main differences with distance vector routing protocol,
which entitles it to have more advantages:
 BEIGRP saves all routes from all neighbours in the topology table, not just the best routes
so far;
 BEIGRP can make query to the neighbors when it is unable to access the destination and
no alternative routes are available, so, the convergence speed of BEIGRP can compete with
the best link-state protocol.
The introduction of DUAL----Diffused Update Algorithm is vital for BEIGRP’s superiority to other traditional
distance vector routing protocol. It always works actively and queries the neighbous when it is unable to access
the destination and there is no alternative routes (feasible replacement). As the convergence process is active
rather than negative (negatively waiting for the timeout of the routers), so the convergence speed of BEIGRP
is very quick.
BEIGRP is a specific routing protocol designed to adapt to the requirements of EIGRP and is directly based
on IP. It meets the following requirements of BEIGRP:
 Dynamically discover new neighbor and the disappearance of old neighbors through “Hello”
message;
 So the transfer of data are all reliable;
 The transfer protocol permits unicast and multicast data transfer;
 The transfer protocol itself can adapt to the change of network condition and neighbor
responding;
 BEIGRP can limit the percentage of its occupation of the bandwidth according to the
requirements
59.2 BEIGRP Configuration Task List
To complete the configuration of BEIGRP the following tasks are required to be done, among them,
the activation of BEIGRP is necessary while others can be decided according to the requirement.
 Activate BEIGRP protocol
 Configure the sharable percentage of bandwidth
 Adjust the arithmetic coefficient of BEIGRP composite distance
 Using “offset” to adjust the composite distance of the router
 Turn off auto-summary
 Customize route summary
 Configure other parameters of BEIGRP