E-BGP 邻居建立 一直是active状态 求解释

小兵x

R2 和R3 之间邻居建立不起来  状态一直是active R3 配置
interface Loopback0
ip address 3.3.3.3 255.255.255.255
!         
interface FastEthernet0/0
ip address 34.0.0.1 255.0.0.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 23.0.0.2 255.0.0.0
duplex auto
speed auto
!
router bgp 65002
no synchronization
bgp log-neighbor-changes
neighbor 2.2.2.2 remote-as 65001
neighbor 2.2.2.2 ebgp-multihop 2
neighbor 4.4.4.4 remote-as 65001
neighbor 4.4.4.4 ebgp-multihop 2
no auto-summary
!
ip route 2.2.2.2 255.255.255.255 23.0.0.1
ip route 4.4.4.4 255.255.255.255 34.0.0.2


R2 配置
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!         
interface FastEthernet0/0
ip address 12.0.0.2 255.0.0.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 23.0.0.1 255.0.0.0
duplex auto
speed auto
!
router ospf 110
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 0
network 12.0.0.0 0.255.255.255 area 0
!
router bgp 65001
no synchronization
bgp log-neighbor-changes
neighbor 1.1.1.1 remote-as 65001
neighbor 1.1.1.1 update-source Loopback0
neighbor 3.3.3.3 remote-as 65002
neighbor 3.3.3.3 ebgp-multihop 2
no auto-summary
!
ip route 3.3.3.3 255.255.255.255 23.0.0.2



R3#sh ip bgp summary
BGP router identifier 3.3.3.3, local AS number 65002
BGP table version is 1, main routing table version 1

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
2.2.2.2         4 65001       0       0        0    0    0 never    Active
4.4.4.4         4 65001       0       0        0    0    0 never    Active

小兵x

纸纸纸

更新源啊！！！

小兵x

纸纸纸 发表于 2013-9-15 21:08
更新源啊！！！

擦了  查半天以为做了呢  再试试

-灬浅水.ゝ

R3:
neighbor 2.2.2.2 remote-as 65001
neighbor 2.2.2.2 ebgp-multihop 2
neighbor 2.2.2.2 up lo 0
neighbor 4.4.4.4 remote-as 65001
neighbor 4.4.4.4 ebgp-multihop 2
nei          4.4.4.4 up lo 0

R2:
neighbor 1.1.1.1 remote-as 65001
neighbor 1.1.1.1 update-source Loopback0
neighbor 3.3.3.3 remote-as 65002
neighbor 3.3.3.3 ebgp-multihop 2
nei          3.3.3.3 up lo 0

小兵x

纸纸纸 发表于 2013-9-15 21:08
更新源啊！！！

ok了  谢谢哈

shimeng

我觉得是R2, R4与R3是EBGP邻居，所以在用neighbor命令时，应该指向对方直连接口的IP。

lucky丶厚

更新源地址不对.
update-source lo0

G_star

在EBGP建立多跳邻居时，通常需要考虑：1、本地是否有可达性路由；2、update-souce loopback接口问题；3、设置相应的TTL值：neighbor x.x.x.x mutilehop x跳数问题
以上仅个人意见，仅供参考！！！