BGP Packet Tracer Lab - Zacham17/my-tech-journal GitHub Wiki

Configuring BGP on a Cisco Router

Border Gateway Protocol(BGP) is a routing protocol where information is shared between autonomous systems. On a Cisco router, the following command syntaxes can be used for BGP configuration:

  • To enter BGP configuration, use the syntax (config)#router bgp <AS_NUMBER_for_Router>
  • While in BGP Configuration, neighbor devices can be configured using the syntax, (router-config)#neighbor <IP_OF_PEER> remote-as <NEIGHBOR_AS_NUMBER>
  • To configure which networks the device you are configuring is in charge of, use the syntax: (router-config)#network <NETWORK IP> mask <NETMASK>

The Lab

In this lab, I configured BGP in a packet tracer network. I configured network interfaces of each router accordingly. An image of the network can be seen below.

image

Router Configurations

I configured each router in this lab to use BGP. I used the following guidelines to determine which routers would be in charge of which networks:

  • 192.168.1.0/30 is in AS 1010
  • 192.168.3.0/30 and 192.168.4.0/30 are in AS 2054

BURLINGTON-BTV ROUTER

  • On the BTV Router, I configured a static route to send all outgoing traffic to the Vermont ISP router using the command, (config)#ip route 0.0.0.0 0.0.0.0 192.168.2.1
  • I also sent the default route to other routers in the area, using the following commands:
(config)#router ospf 1 
(router-config)#default-information originate
  • I configured BGP on the BTV router, in accordance with the packet tracer file, using the following commands:
(config)#router bgp 3033
(router-config)#neighbor 192.168.2.1 remote-as 1010
(router-config)#network 192.168.10.0 mask 255.255.255.0
(router-config)#network 172.16.0.0 mask 255.255.255.252
  • I also advertised all of the Foster 202 Co routes using the command (router-config)#redistribute ospf 1

VERMONT ISP ROUTER

  • I configured BGP on the Vermont ISP router, in accordance with the packet tracer file, using the following commands:
(config)#router bgp 1010
(router-config)#neighbor 192.168.1.2 remote-as 2054
(router-config)#neighbor 192.168.2.2 remote-as 3033
(router-config)#network 192.168.1.0 mask 255.255.255.252
(router-config)#network 192.168.2.0 mask 255.255.255.252

PACIFIC ISP ROUTER

  • I configured BGP on the Pacific ISP router, in accordance with the packet tracer file, using the following commands:
(config)#router bgp 2054
(router-config)#neighbor 192.168.1.1 remote-as 1010
(router-config)#neighbor 192.168.3.2 remote-as 34908
(router-config)#neighbor 192.168.4.2 remote-as 5132
(router-config)#network 192.168.3.0 mask 255.255.255.252
(router-config)#network 192.168.4.0 mask 255.255.255.252

PARTNER COMPANY ROUTER

  • I configured BGP on the Partner Company router, in accordance with the packet tracer file, using the following commands:
(config)#router bgp 34908
(router-config)#neighbor 192.168.3.1 remote-as 2054
(router-config)#network 10.15.6.0 mask 255.255.255.0

CUSTOMER COMPANY ROUTER

  • I configured BGP on the Customer Company router, in accordance with the packet tracer file, using the following commands:
(config)#router bgp 5132
(router-config)#neighbor 192.168.4.1 remote-as 2054
(router-config)#network 10.200.24.0 mask 255.255.255.0
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