BGP （IBGP EBP）实验

robin6621

11111

R1:
interface Loopback0
ip address 1.1.1.1 255.255.255.0
!         
interface Ethernet0/0
ip address 12.1.1.1 255.255.255.0
half-duplex
!         
interface Ethernet0/1
ip address 13.1.1.1 255.255.255.0
half-duplex
!         
interface Ethernet0/2
no ip address
shutdown
half-duplex
!         
interface Ethernet0/3
no ip address
shutdown
half-duplex
!         
router ospf 110
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.0 0.0.0.255 area 0
network 12.1.1.0 0.0.0.255 area 0
network 13.1.1.0 0.0.0.255 area 0
!         
router bgp 1
no synchronization
bgp router-id 1.1.1.1
bgp log-neighbor-changes
neighbor wolf peer-group         //定义peer-group
neighbor wolf remote-as 1
neighbor wolf update-source Loopback0
neighbor 2.2.2.2 peer-group wolf
neighbor 3.3.3.3 peer-group wolf
no auto-summary
!         
no ip http server
no ip http secure-server
!         
!         
!         
!         
==========================================
R2:
interface Loopback0
ip address 2.2.2.2 255.255.255.0
!         
interface Ethernet0/0
ip address 12.1.1.2 255.255.255.0
half-duplex
!         
interface Ethernet0/1
no ip address
shutdown
half-duplex
!         
interface Ethernet0/2
no ip address
shutdown
half-duplex
!         
interface Ethernet0/3
no ip address
shutdown
half-duplex
!         
interface Serial1/0
ip address 24.1.1.2 255.255.255.0
serial restart-delay 0
clock rate 64000
!         
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!         
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!         
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!         
router ospf 110
router-id 2.2.2.2
log-adjacency-changes
network 2.2.2.0 0.0.0.255 area 0
network 12.1.1.0 0.0.0.255 area 0
!         
router bgp 1
no synchronization
bgp router-id 2.2.2.2
bgp log-neighbor-changes
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 update-source Loopback0
neighbor 1.1.1.1 next-hop-self    //针对R1下一跳指向我
neighbor 3.3.3.3 remote-as 1
neighbor 3.3.3.3 update-source Loopback0
neighbor 3.3.3.3 next-hop-self          //对于BGP边界路由器需要将邻居路由器的下一跳指向自己
neighbor 24.1.1.4 remote-as 4
no auto-summary
!         
no ip http server
no ip http secure-server
!         
!   
内部BGP路由表：
R2#sh ip bgp
BGP table version is 3, local router ID is 2.2.2.2
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 4.4.4.0/24       24.1.1.4                 0             0 4 i
*>i5.5.5.0/24       3.3.3.3                  0    100      0 5 i
R2#
==========================================
R3:
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!         
interface Ethernet0/0
no ip address
shutdown
half-duplex
!         
interface Ethernet0/1
ip address 13.1.1.3 255.255.255.0
half-duplex
!         
interface Ethernet0/2
no ip address
shutdown
half-duplex
!         
interface Ethernet0/3
no ip address
shutdown
half-duplex
!         
interface Serial1/0
ip address 35.1.1.3 255.255.255.0
serial restart-delay 0
clock rate 64000
!         
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!         
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!         
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!         
router ospf 110
router-id 3.3.3.3
log-adjacency-changes
network 3.3.3.0 0.0.0.255 area 0
network 13.1.1.0 0.0.0.255 area 0
!         
router bgp 1
no synchronization
bgp router-id 3.3.3.3
bgp log-neighbor-changes
neighbor 1.1.1.1 remote-as 1
neighbor 1.1.1.1 update-source Loopback0
neighbor 1.1.1.1 next-hop-self
neighbor 2.2.2.2 remote-as 1
neighbor 2.2.2.2 update-source Loopback0
neighbor 2.2.2.2 next-hop-self
neighbor 5.5.5.5 remote-as 5
neighbor 5.5.5.5 ebgp-multihop 255
neighbor 5.5.5.5 update-source Loopback0
no auto-summary
!         
no ip http server
no ip http secure-server
ip route 5.5.5.5 255.255.255.255 Serial1/0
!         
!         
==========================================
R4:
interface Loopback0
ip address 4.4.4.4 255.255.255.0
!         
interface Serial0/0
ip address 24.1.1.4 255.255.255.0
serial restart-delay 0
!         
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!         
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!         
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!         
router bgp 4
no synchronization
bgp router-id 4.4.4.4
bgp log-neighbor-changes
network 4.4.4.0 mask 255.255.255.0
neighbor 24.1.1.2 remote-as 1
no auto-summary
!         
no ip http server
no ip http secure-server
!         
!         
!  

外部BGP路由表：
R4#sh ip bgp
BGP table version is 3, local router ID is 4.4.4.4
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 4.4.4.0/24       0.0.0.0                  0         32768 i
*> 5.5.5.0/24       24.1.1.2                               0 1 5 i
R4#      
==========================================
R5:
interface Loopback0
ip address 5.5.5.5 255.255.255.0
!         
interface Serial0/0
ip address 35.1.1.5 255.255.255.0
serial restart-delay 0
!         
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!         
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!         
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!         
router bgp 5
no synchronization
bgp log-neighbor-changes
network 5.5.5.0 mask 255.255.255.0
neighbor 3.3.3.3 remote-as 1
neighbor 3.3.3.3 ebgp-multihop 255
neighbor 3.3.3.3 update-source Loopback0
no auto-summary
!         
no ip http server
no ip http secure-server
ip route 3.3.3.3 255.255.255.255 Serial0/0