Is full meshed iBGP necessary?

Revisit the configuration of the iBGP routers R2#sh run | s r b router bgp 2 bgp log-neighbor-changes neighbor 3.3.3.3 remote-as 2 neighbor 3.3.3.3 update-source Loopback2 neighbor 3.3.3.3 next-hop-self neighbor 4.4.4.4 remote-as 2 neighbor 4.4.4.4 update-source Loopback2 neighbor 4.4.4.4 next-hop-self neighbor 192.168.12.1 remote-as 1 R2# R3#sh run | s r b router bgp 2 bgp … Continue reading Is full meshed iBGP necessary?

BGP: Injecting IGP route into BGP without redistribution

The diagram is complicated with an additional link, and instead of full BGP route in AS65000, the BGP route is propagated with the help of OSPF. In previous lab, the BGP full mesh was established by peering both subnets of a BGP router. However this step can be simplified by peering the BGP speaker's loopback … Continue reading BGP: Injecting IGP route into BGP without redistribution

BGP: Load balancing using ebgp multihop and loopback interface.

1841-1 configuration 1841-1#sh run | s router bgp router bgp 64512 no synchronization bgp log-neighbor-changes network 172.16.1.0 mask 255.255.255.0 neighbor 110.1.1.1 remote-as 64513 neighbor 110.1.1.1 ebgp-multihop 2 neighbor 110.1.1.1 update-source Loopback64512 no auto-summary 1841-1#sh run | i ip route ip route 110.1.1.1 255.255.255.255 192.168.1.2 ip route 110.1.1.1 255.255.255.255 192.168.2.2 1841-2 Configuration 1841-2#sh run | s … Continue reading BGP: Load balancing using ebgp multihop and loopback interface.