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聚合BGP

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发表于 2010-8-24 23:40:12 | 显示全部楼层 |阅读模式
 R6 ----- R3 ------ R5
  
  R6 的AS 65530
  R3的AS 1
  R5的AS 2
  
  聚合172.16.0.0/24到172.16.3.0/24
  
  R6的配置
  interface Serial1
  ip address 172.17.1.2 255.255.255.0
  !
  router bgp 65530
  bgp log-neighbor-changes
  neighbor 172.17.1.1 remote-as 1
  !
  
  R3的配置
  interface Serial0
  ip address 10.1.1.1 255.255.255.0
  no ip route-cache
  no ip mroute-cache
  clockrate 500000
  !
  interface Serial1
  ip address 172.17.1.1 255.255.255.0
  no ip route-cache
  no ip mroute-cache
  clockrate 500000
  !
  interface BRI0
  no ip address
  no ip route-cache
  no ip mroute-cache
  shutdown
  !
  router bgp 1
  bgp log-neighbor-changes
  aggregate-address 172.16.0.0 255.255.252.0
  neighbor 10.1.1.2 remote-as 2
  neighbor 172.17.1.2 remote-as 65530
  !
  
  R5的配置
  !
  interface Loopback0
  ip address 172.16.0.1 255.255.255.0
  !
  interface Loopback1
  ip address 172.16.1.1 255.255.255.0
  !
  interface Loopback2
  ip address 172.16.2.1 255.255.255.0
  !
  interface Loopback3
  ip address 172.16.3.1 255.255.255.0
  !
  interface Ethernet0
  no ip address
  no ip mroute-cache
  shutdown
  no cdp enable
  !
  interface Serial0
  ip address 10.1.1.2 255.255.255.0
  no ip mroute-cache
  !
  !
  router bgp 2
  bgp log-neighbor-changes
  network 172.16.0.0 mask 255.255.255.0
  network 172.16.1.0 mask 255.255.255.0
  network 172.16.2.0 mask 255.255.255.0
  network 172.16.3.0 mask 255.255.255.0
  neighbor 10.1.1.1 remote-as 1
  
  在R3上使用sh ip bgp
  R3#sh ip bgp
  BGP table version is 6, local router ID is 192.168.0.80
  Status codes: s suppressed, d damped, h history, * valid, > best, i - internal
  Origin codes: i - IGP, e - EGP, ? - incomplete
  
  Network Next Hop Metric LocPrf Weight Path
  *> 172.16.0.0/24 10.1.1.2 0 0 2 i
  *> 172.16.0.0/22 0.0.0.0 32768 i
  *> 172.16.1.0/24 10.1.1.2 0 0 2 i
  *> 172.16.2.0/24 10.1.1.2 0 0 2 i
  *> 172.16.3.0/24 10.1.1.2 0 0 2 i
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