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no shutdown
R1(conf-if-te-1/31)#router bgp 99
R1(conf-router_bgp)#network 192.168.128.0/24
R1(conf-router_bgp)#neighbor 192.168.128.2 remote 99
R1(conf-router_bgp)#neighbor 192.168.128.2 no shut
R1(conf-router_bgp)#neighbor 192.168.128.2 update-source loop 0
R1(conf-router_bgp)#neighbor 192.168.128.3 remote 100
R1(conf-router_bgp)#neighbor 192.168.128.3 no shut
R1(conf-router_bgp)#neighbor 192.168.128.3 update-source loop 0
R1(conf-router_bgp)#show config
!
router bgp 99
network 192.168.128.0/24
neighbor 192.168.128.2 remote-as 99
neighbor 192.168.128.2 update-source Loopback 0
neighbor 192.168.128.2 no shutdown
neighbor 192.168.128.3 remote-as 100
neighbor 192.168.128.3 update-source Loopback 0
neighbor 192.168.128.3 no shutdown
R1(conf-router_bgp)#end
R1#
R1#show ip bgp summary
BGP router identifier 192.168.128.1, local AS number 99
BGP table version is 4, main routing table version 4
4 network entrie(s) using 648 bytes of memory
6 paths using 408 bytes of memory
BGP-RIB over all using 414 bytes of memory
3 BGP path attribute entrie(s) using 144 bytes of memory
2 BGP AS-PATH entrie(s) using 74 bytes of memory
2 neighbor(s) using 8672 bytes of memory
Neighbor AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/Pfx
192.168.128.2 99 4 5 4 0 0 00:00:32 1
192.168.128.3 100 5 4 1 0 0 00:00:09 4
R1#
Example of Enabling BGP (Router 2)
R2# conf
R2(conf)#int loop 0
R2(conf-if-lo-0)#ip address 192.168.128.2/24
R2(conf-if-lo-0)#no shutdown
R2(conf-if-lo-0)#show config
!
interface Loopback 0
ip address 192.168.128.2/24
no shutdown
R2(conf-if-lo-0)#int tengig 2/11
R2(conf-if-te-2/11)#ip address 10.0.1.22/24
R2(conf-if-te-2/11)#no shutdown
R2(conf-if-te-2/11)#show config
!
interface TenGigabitEthernet 2/11
ip address 10.0.1.22/24
no shutdown
R2(conf-if-te-2/11)#int tengig 2/31
R2(conf-if-te-2/31)#ip address 10.0.2.2/24
R2(conf-if-te-2/31)#no shutdown
R2(conf-if-te-2/31)#show config
!
interface TenGigabitEthernet 2/31
ip address 10.0.2.2/24
no shutdown
R2(conf-if-te-2/31)#
208
Border Gateway Protocol IPv4 (BGPv4)