BGP (Border Gateway Protocol) is the core routing protocol of the Internet. It is described as a path vector protocol as BGP does not use traditional IGP (OSPF, EIGRP, RIP) metrics, but makes routing decisions based on path, network policies and/or rulesets. It maintains a table of IP networks or 'prefixes' which designate network reachability among autonomous systems (AS).
BGP protocol support has been added in Packet Tracer in the 5.3 version. This allows Cisco CCNP Route students to better understand this complex routing protocol and to be prepared for the simulation questions in the exam.
Internal BGP (iBGP) is currently not supported in Packet Tracer (see screenshot below).
Router WAN1 configuration :
ip address 188.8.131.52 255.255.255.252
router bgp 65000
neighbor 184.108.40.206 remote-as 10000
Router ISP1 configuration :
ip address 220.127.116.11 255.255.255.0
ip address 18.104.22.168 255.255.255.0
ip address 22.214.171.124 255.255.254.0
ip address 126.96.36.199 255.255.255.252
clock rate 500000
router bgp 10000
neighbor 188.8.131.52 remote-as 65000
network 184.108.40.206 mask 255.255.254.0
network 220.127.116.11 mask 255.255.255.0
network 18.104.22.168 mask 255.255.255.0
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