bgp聯邦

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hostname r1 

R1#show run 

Building configuration... 

Current configuration : 1372 bytes 

! 

version 12.4 

service timestamps debug datetime msec 

service timestamps log datetime msec 

no service password-encryption 

hostname R1 

boot-start-marker 

boot-end-marker 

no aaa new-model 

ip cef 

no ip domain lookup 

!          

!  

interface Loopback0 

ip address 1.1.1.1 255.255.255.0 

interface FastEthernet0/0 

no ip address 

shutdown 

duplex half 

interface Serial1/0 

ip address 12.0.0.1 255.255.255.0 

serial restart-delay 0 

interface Serial1/1 

interface Serial1/2 

interface Serial1/3 

interface Serial1/4 

interface Serial1/5 

interface Serial1/6 

interface Serial1/7 

router bgp 100 

no synchronization 

bgp log-neighbor-changes 

network 1.1.1.0 mask 255.255.255.0 

network 12.0.0.0 mask 255.255.255.0 

neighbor 12.0.0.2 remote-as 234 

no auto-summary 

no ip http server 

no ip http secure-server 

control-plane 

gatekeeper 

line con 0 

exec-timeout 0 0 

logging synchronous 

stopbits 1 

line aux 0 

line vty 0 4 

end 

hostname r2 

R2#show run 

Current configuration : 1559 bytes 

hostname R2 

ip address 2.2.2.2 255.255.255.0 

ip address 12.0.0.2 255.255.255.0 

ip address 23.0.0.2 255.255.255.0 

router eigrp 11 

network 2.0.0.0 

network 23.0.0.0 

router bgp 65023 

bgp confederation identifier 234 

network 2.2.2.0 mask 255.255.255.0 

neighbor 3.3.3.3 remote-as 65023 

neighbor 3.3.3.3 update-source Loopback0 

neighbor 3.3.3.3 next-hop-self 

neighbor 12.0.0.1 remote-as 100 

hostname r3 

R3#show run 

Current configuration : 1730 bytes 

hostname R3 

ip address 3.3.3.3 255.255.255.0 

ip address 23.0.0.3 255.255.255.0 

ip address 34.0.0.3 255.255.255.0 

network 3.0.0.0 

network 34.0.0.0 

bgp confederation peers 65034  

network 3.3.3.0 mask 255.255.255.0 

network 23.0.0.0 mask 255.255.255.0 

network 34.0.0.0 mask 255.255.255.0 

neighbor 2.2.2.2 remote-as 65023 

neighbor 2.2.2.2 update-source Loopback0 

neighbor 4.4.4.4 remote-as 65034 

neighbor 4.4.4.4 ebgp-multihop 255 

neighbor 4.4.4.4 update-source Loopback0 

hostname r4 

R4#show run 

Current configuration : 1627 bytes 

hostname R4 

ip address 4.4.4.4 255.255.255.0 

ip address 34.0.0.4 255.255.255.0 

ip address 45.0.0.4 255.255.255.0 

network 4.0.0.0 

router bgp 65034 

bgp confederation peers 65023  

network 4.4.4.0 mask 255.255.255.0 

neighbor 3.3.3.3 ebgp-multihop 255 

neighbor 45.0.0.5 remote-as 500 

hostname r5 

R5#show run 

hostname R5 

ip address 5.5.5.5 255.255.255.0 

ip address 45.0.0.5 255.255.255.0 

router bgp 500 

network 5.5.5.0 mask 255.255.255.0 

network 45.0.0.0 mask 255.255.255.0 

neighbor 45.0.0.4 remote-as 234 

R3#show ip bgp 

BGP table version is 12, local router ID is 3.3.3.3 

Status codes: s suppressed, d damped, h history, * valid, &gt; best, i - internal, 

             r RIB-failure, S Stale 

Origin codes: i - IGP, e - EGP, ? - incomplete 

  Network          Next Hop            Metric LocPrf Weight Path 

*&gt;i1.1.1.0/24       2.2.2.2                  0    100      0 100 i 

r&gt;i2.2.2.0/24       2.2.2.2                  0    100      0 i 

*&gt; 3.3.3.0/24       0.0.0.0                  0         32768 i 

r&gt; 4.4.4.0/24       4.4.4.4                  0    100      0 (65034) i 

*&gt; 5.5.5.0/24       4.4.4.4                  0    100      0 (65034) 500 i 

*&gt;i12.0.0.0/24      2.2.2.2                  0    100      0 100 i 

*&gt; 23.0.0.0/24      0.0.0.0                  0         32768 i 

*&gt; 34.0.0.0/24      0.0.0.0                  0         32768 i 

*&gt; 45.0.0.0/24      4.4.4.4                  0    100      0 (65034) 500  

R1#ping 5.5.5.5 

Type escape sequence to abort. 

Sending 5, 100-byte ICMP Echos to 5.5.5.5, timeout is 2 seconds: 

!!!!! 

Success rate is 100 percent (5/5), round-trip min/avg/max = 24/61/128 ms 

R5#ping 1.1.1.1 

Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds: 

Success rate is 100 percent (5/5), round-trip min/avg/max = 16/74/152 ms 

本文轉自zhang25yun51CTO部落格，原文連結： http://blog.51cto.com/1585654/1402027，如需轉載請自行聯系原作者