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助理工程师
 
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实验做到一半发现了问题
AS100 和AS200 两边都有各自的MPLS 域
R2 和 R7 是MSDP peer 可以ping 通 并且 show ip msdp peer 组是 up 的
测试我R1的f1/1 口测试加入 239.1.1.9
我在另外的域 R7 ping 这个地址 239.1.1.9
ping 通了 但是 组播路由表变成这样了。。。
组播源的组播路由表
R7#show ip mroute
IP Multicast Routing Table
(*, 239.1.1.9), 00:00:17/stopped, RP 77.1.1.1, flags: SP
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list: Null
(78.1.1.7, 239.1.1.9), 00:00:17/00:02:41, flags: PA
Incoming interface: FastEthernet1/1, RPF nbr 0.0.0.0
Outgoing interface list: Null
(77.1.1.1, 239.1.1.9), 00:00:17/00:02:43, flags: PTA
Incoming interface: Loopback0, RPF nbr 0.0.0.0
Outgoing interface list: Null
(67.1.1.7, 239.1.1.9), 00:00:18/00:02:43, flags: PTA
Incoming interface: FastEthernet1/0, RPF nbr 0.0.0.0
Outgoing interface list: Null
(*, 224.0.1.40), 01:43:54/00:02:57, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 01:43:55/00:02:56
接收方的组播路由表
R1#show ip mroute
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group,
V - RD & Vector, v - Vector
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 239.1.1.9), 01:34:32/00:02:50, RP 22.1.1.1, flags: SJPL
Incoming interface: FastEthernet1/1, RPF nbr 12.1.1.2
Outgoing interface list: Null
(*, 224.0.1.40), 11:26:17/00:01:58, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 11:26:17/00:01:58
还有R1 的接收方 开启了 debug icmp 也显示了 3个回复
R1#
*Jul 20 23:45:42.965: ICMP: echo reply sent, src 12.1.1.1, dst 67.1.1.7
*Jul 20 23:45:42.997: ICMP: echo reply sent, src 12.1.1.1, dst 77.1.1.1
*Jul 20 23:45:43.005: ICMP: echo reply sent, src 12.1.1.1, dst 78.1.1.7
之后 在ping 也不通了 (按理说应该是共享树转换成源树 从第一跳路由器发起,但是RPF不通过所以不行 。但是我把组播源也就是R7 也宣告出去了)
BGP address ipv4 里面 ,并且R1 也能进行单播访问 可是源树还是建立不起来
R1 的路由表
R1#show ip route
34.0.0.0/24 is subnetted, 1 subnets
O 34.1.1.0 [110/3] via 12.1.1.2, 1d01h, FastEthernet1/1
33.0.0.0/32 is subnetted, 1 subnets
O 33.1.1.1 [110/3] via 12.1.1.2, 1d01h, FastEthernet1/1
23.0.0.0/24 is subnetted, 1 subnets
O 23.1.1.0 [110/2] via 12.1.1.2, 1d01h, FastEthernet1/1
67.0.0.0/24 is subnetted, 1 subnets
B 67.1.1.0 [200/2] via 44.1.1.1, 00:33:44
22.0.0.0/32 is subnetted, 1 subnets
O 22.1.1.1 [110/2] via 12.1.1.2, 1d01h, FastEthernet1/1
77.0.0.0/32 is subnetted, 1 subnets
B 77.1.1.1 [200/0] via 44.1.1.1, 00:33:44
11.0.0.0/32 is subnetted, 1 subnets
C 11.1.1.1 is directly connected, Loopback0
12.0.0.0/24 is subnetted, 1 subnets
C 12.1.1.0 is directly connected, FastEthernet1/1
44.0.0.0/32 is subnetted, 1 subnets
O 44.1.1.1 [110/4] via 12.1.1.2, 1d01h, FastEthernet1/1
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拓扑
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