R3#sho ip int bri
Interface
IP-Address OK? Method
Status Protocol
FastEthernet0/0
10.1.23.3 YES manual up up
Loopback0
3.3.3.3 YES manual up up
R2# sho ip int bri
Interface
IP-Address OK? Method
Status Protocol
FastEthernet0/0
10.1.12.2 YES manual up up
FastEthernet1/0
10.1.23.2 YES manual up up
Loopback0
2.2.2.2 YES manual up up
R3#sho ip int bri
Interface
IP-Address OK? Method
Status Protocol
FastEthernet0/0
10.1.23.3 YES manual up up
Loopback0
3.3.3.3 YES manual up up
R1(config)#router bgp 1
R1(config-router)#neighbor 10.1.12.2 remote-as 2
R2(config)#router bgp 2
R2(config-router)#neighbor 10.1.12.1 remote-as 1
R2(config-router)#neighbor 10.1.23.3 remote-as 3
R3(config)#router bgp 3
R3(config-router)#neighbor 10.1.23.2 remote-as 2
R1#sho ip bgp summary
BGP router identifier 1.1.1.1, local AS number 1
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer
InQ OutQ Up/Down State/PfxRcd
10.1.12.2 4 2
4 4 1
0 0 00:01:33 0
R2#sh ip bgp summary
BGP router identifier 2.2.2.2, local AS number 2
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer
InQ OutQ Up/Down State/PfxRcd
10.1.12.1 4 1
4 4 1
0 0 00:01:41 0
10.1.23.3 4 3
4 4 1
0 0 00:00:38 0
R3# sho ip bgp summary
BGP router identifier 3.3.3.3, local AS number 3
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer
InQ OutQ Up/Down State/PfxRcd
10.1.23.2 4 2
4 4 1
0 0 00:00:50 0
R1(config)#router bgp 1
R1(config-router)#network 1.1.1.1 mask 255.255.255.255
R2(config)#router bgp 2
R2(config-router)#network 2.2.2.2 mask 255.255.255.255
R3(config)#router bgp 3
R3(config-router)#network 3.3.3.3 mask 255.255.255.255
R1#sho ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B -
BGP
D - EIGRP, EX -
EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA
external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF
external type 1, E2 - OSPF external type 2
i - IS-IS, su -
IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS
inter area, * - candidate default, U - per-user static route
o - ODR, P -
periodic downloaded static route
Gateway of last resort is not set
1.0.0.0/32 is
subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
2.0.0.0/32 is
subnetted, 1 subnets
B 2.2.2.2 [20/0]
via 10.1.12.2, 00:00:48
3.0.0.0/32 is
subnetted, 1 subnets
B 3.3.3.3 [20/0]
via 10.1.12.2, 00:00:17
10.0.0.0/24 is
subnetted, 1 subnets
C 10.1.12.0 is
directly connected, FastEthernet0/0
R2#sho ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B -
BGP
D - EIGRP, EX -
EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA
external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF
external type 1, E2 - OSPF external type 2
i - IS-IS, su -
IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS
inter area, * - candidate default, U - per-user static route
o - ODR, P -
periodic downloaded static route
Gateway of last resort is not set
1.0.0.0/32 is
subnetted, 1 subnets
B 1.1.1.1 [20/0]
via 10.1.12.1, 00:01:40
2.0.0.0/32 is
subnetted, 1 subnets
C 2.2.2.2 is
directly connected, Loopback0
3.0.0.0/32 is
subnetted, 1 subnets
B 3.3.3.3 [20/0]
via 10.1.23.3, 00:01:07
10.0.0.0/24 is
subnetted, 2 subnets
C 10.1.12.0 is
directly connected, FastEthernet0/0
C 10.1.23.0 is
directly connected, FastEthernet1/0
R3#sho ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B -
BGP
D - EIGRP, EX -
EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA
external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF
external type 1, E2 - OSPF external type 2
i - IS-IS, su -
IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS
inter area, * - candidate default, U - per-user static route
o - ODR, P -
periodic downloaded static route
Gateway of last resort is not set
1.0.0.0/32 is
subnetted, 1 subnets
B 1.1.1.1 [20/0]
via 10.1.23.2, 00:01:48
2.0.0.0/32 is
subnetted, 1 subnets
B 2.2.2.2 [20/0]
via 10.1.23.2, 00:01:17
3.0.0.0/32 is
subnetted, 1 subnets
C 3.3.3.3 is
directly connected, Loopback0
10.0.0.0/24 is
subnetted, 1 subnets
C 10.1.23.0 is
directly connected, FastEthernet0/0
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