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Chapter 8
Configuring Basic BGP
F I G U R E 8 . 1
A practice BGP topology
Starting the BGP process is similar to configuring an internal routing pro-
tocol. BGP is initiated on the router by using the following command and
syntax:
router bgp autonomous-system
Let's take a look at an example of initiating BGP on RouterA based on
Figure 8.1:
RouterA>enable
RouterB#config t
Enter configuration commands, one per line. End with CNTL/Z.
RouterA(config)#router ?
bgp Border Gateway Protocol (BGP)
egp Exterior Gateway Protocol (EGP)
eigrp Enhanced Interior Gateway Routing
Protocol (EIGRP)
igrp Interior Gateway Routing Protocol
(IGRP)
isis ISO IS-IS
iso-igrp IGRP for OSI networks
mobile Mobile routes
odr On Demand stub Routes
ospf Open Shortest Path First (OSPF)
rip Routing Information Protocol (RIP)
Network 63.78.0.0
AS# 34000
Network 130.77.0.0
AS# 59000
AS# 63001
Network 172.16.0.0
Internet
Internet
RouterA
63.78.39.174
RouterB
172.16.2.1
RouterC
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