Hello, In my topology i configured EBGP between ISP1 to R1, and R4 to ISP3B here my configuration working.
i want to configure between R1,R2, R3 ,R4 IBGP by the way here IGP working between R1 up to R4 i can ping from R1 to R2 R3 R4.
here my question, I wont configure IBGP between R1,R2, R3 ,R4 on loopback interface it doesn't work. i don't now where is my mistake
here all my configuration from all routers,
R1
interface Loopback1
ip address 10.0.0.1 255.255.255.240
!
interface Ethernet0/0
description TO-->ISP1
ip address 172.16.11.1 255.255.255.0
duplex auto
!
interface Ethernet0/2
description To-->R2
ip address 192.168.12.1 255.255.255.0
duplex auto
!
interface Ethernet0/3
description TO-->R3
ip address 192.168.13.1 255.255.255.0
duplex auto
!
router ospf 1
network 10.0.0.0 0.0.0.15 area 0
network 172.16.11.0 0.0.0.255 area 0
network 192.168.12.0 0.0.0.255 area 0
network 192.168.13.0 0.0.0.255 area 0
!
router bgp 1
bgp log-neighbor-changes
neighbor 10.0.0.33 remote-as 1
neighbor 172.16.11.11 remote-as 100
!
R2
interface Loopback1
ip address 10.0.0.33 255.255.255.240
!
interface Ethernet0/0
no ip address
shutdown
duplex auto
!
interface Ethernet0/2
ip address 192.168.12.2 255.255.255.0
duplex auto
!
interface Ethernet0/3
ip address 192.168.24.2 255.255.255.0
duplex auto
!
router ospf 1
network 10.0.0.32 0.0.0.15 area 0
network 192.168.12.0 0.0.0.255 area 0
network 192.168.24.0 0.0.0.255 area 0
!
router bgp 1
bgp log-neighbor-changes
neighbor 10.0.0.1 remote-as 1
!
R3
interface Loopback1
ip address 10.0.0.17 255.255.255.240
!
interface Ethernet0/0
no ip address
shutdown
duplex auto
!
interface Ethernet0/2
ip address 192.168.34.3 255.255.255.0
duplex auto
!
interface Ethernet0/3
ip address 192.168.13.3 255.255.255.0
duplex auto
!
router ospf 1
network 10.0.0.16 0.0.0.15 area 0
network 192.168.13.0 0.0.0.255 area 0
network 192.168.34.0 0.0.0.255 area 0
!
interface Loopback1
ip address 10.0.0.49 255.255.255.240
!
interface Ethernet0/0
description TO-->ISP3B
ip address 172.16.34.4 255.255.255.0
duplex auto
!
interface Ethernet0/2
ip address 192.168.34.4 255.255.255.0
duplex auto
!
interface Ethernet0/3
ip address 192.168.24.4 255.255.255.0
duplex auto
!
router ospf 1
network 10.0.0.48 0.0.0.15 area 0
network 192.168.24.0 0.0.0.255 area 0
network 192.168.34.0 0.0.0.255 area 0
!
router bgp 1
bgp log-neighbor-changes
neighbor 172.16.34.34 remote-as 300
neighbor 172.16.34.34 description TO-->ISP3B
!
