BGP的一个问题，实验图片在附件

YHLCSZD

实验要求R4和R5之间只能是静态路由，流量走R2，当R2掉线后走R3。用as-path选路原则。最后保证10.1网段的ping通10.80网段的。我做了好久怎么都ping不通。

R1的配置：
R1#show run | sec router
router bgp 1234
bgp log-neighbor-changes
network 10.1.0.0 mask 255.255.0.0
network 12.1.1.0 mask 255.255.255.252
network 13.1.1.0 mask 255.255.255.248
neighbor 12.1.1.2 remote-as 65000
neighbor 13.1.1.3 remote-as 65000

R1的summary：
Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
12.1.1.2        4        65000      85      86        8    0    0 01:07:39        5
13.1.1.3        4        65000      83      99        8    0    0 01:05:18        5

R1的bgp

      10.0.0.0/8 is variably subnetted, 3 subnets, 2 masks
C        10.1.0.0/16 is directly connected, Loopback0
L        10.1.0.1/32 is directly connected, Loopback0
B        10.80.0.0/16 [20/0] via 13.1.1.3, 00:07:08
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.1.1.0/30 is directly connected, Ethernet0/0
L        12.1.1.1/32 is directly connected, Ethernet0/0
      13.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        13.1.1.0/29 is directly connected, Ethernet0/1
L        13.1.1.1/32 is directly connected, Ethernet0/1
      24.0.0.0/29 is subnetted, 1 subnets
B        24.1.1.0 [20/0] via 12.1.1.2, 00:07:08
      34.0.0.0/29 is subnetted, 1 subnets
B        34.1.1.0 [20/0] via 13.1.1.3, 00:07:08
      45.0.0.0/29 is subnetted, 1 subnets
B        45.1.1.0 [20/0] via 12.1.1.2, 00:07:08

R3的配置：
R3#show run | sec router
router bgp 65000
bgp log-neighbor-changes
network 13.1.1.0 mask 255.255.255.248
network 34.1.1.0 mask 255.255.255.248
neighbor 13.1.1.1 remote-as 1234
neighbor 13.1.1.1 route-map backup in
neighbor 34.1.1.4 remote-as 65000

R3的控制列表：

route-map backup permit 1
match ip address 1
set as-path prepend 65001 65002
!
!
access-list 1 permit 10.1.0.0 0.0.255.255

R2的配置：

R2#show run | sec router
router bgp 65000
bgp log-neighbor-changes
network 12.1.1.0 mask 255.255.255.252
network 24.1.1.0 mask 255.255.255.248
neighbor 12.1.1.1 remote-as 1234
neighbor 24.1.1.4 remote-as 65000

R4的配置：
R4#show run | sec router
router bgp 65000
bgp log-neighbor-changes
network 24.1.1.0 mask 255.255.255.248
network 34.1.1.0 mask 255.255.255.248
redistribute connected
redistribute static
neighbor 24.1.1.2 remote-as 65000
neighbor 34.1.1.3 remote-as 65000

R5的配置：
R5#show run | sec router
router bgp 65000
bgp log-neighbor-changes
network 56.1.1.4 mask 255.255.255.252
redistribute connected
redistribute static
neighbor 56.1.1.6 remote-as 17493

R6的配置：

R6#show running-config | sec router
router bgp 17493
bgp log-neighbor-changes
network 10.80.0.0 mask 255.255.0.0
network 56.1.1.4 mask 255.255.255.252
neighbor 56.1.1.5 remote-as 65000

YHLCSZD

地址能通了，但是我自己down掉12网段13网段却不能通，走13网段学不到重发布进来的45网段的地址

Whatever467

楼主这是按照需求新建拓扑还是照着实验敲啊

abletjon

是哪里出问题了么?静态没问题么？