Multicast VPN Problem

Hi all,

I have a problem with Multicast VPN:

- Topo:
R7(f1/2)---------(f0/0)R2--------------R3--------------R4(e0/1)-------------
-----(f1/4)R8

- R2 uses IOS 12.2S(25), R4 uses 12.4(16a)

- MPLS is enabled on R2,R3,R4.

- R2 & R4 are PE routers, R3 is P router.

- MDT default 224.24.24.24 is configured on R2 & R4.

- For customer site, PIM-SM is enabled between R4-R8 and R2-R7 with
RP-address is f0/0 on R2 (172.10.27.2).

- Configuration on R8 f1/4 as below:

interface FastEthernet1/4

 no switchport

 ip address 172.10.48.8 255.255.255.0

 ip pim sparse-mode

 ip igmp join-group 224.8.8.8

Here's the problem:

- When I ping 224.8.8.8 from R7, it's ok.

Rack1R7#ping 224.8.8.8 source f1/2 re 10

Type escape sequence to abort.

Sending 10, 100-byte ICMP Echos to 224.8.8.8, timeout is 2 seconds:

Packet sent with a source address of 172.10.27.7

Reply to request 0 from 172.10.48.8, 260 ms

Reply to request 1 from 172.10.48.8, 188 ms

Reply to request 2 from 172.10.48.8, 160 ms

Reply to request 3 from 172.10.48.8, 180 ms

- When I ping from R2, only the first packet is ok

Rack1R2#ping vrf A

Protocol [ip]:

Target IP address: 224.8.8.8

Repeat count [1]: 10

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]: y

Interface [All]: fastethernet0/0

Time to live [255]:

Source address: 172.10.27.2

Type of service [0]:

Set DF bit in IP header? [no]:

Validate reply data? [no]:

Data pattern [0xABCD]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Sweep range of sizes [n]:

Type escape sequence to abort.

Sending 10, 100-byte ICMP Echos to 224.8.8.8, timeout is 2 seconds:

Packet sent with a source address of 172.10.27.2

Reply to request 0 from 172.10.48.8, 252 ms.....

- From R4, I can see that it received 10 packets from the first
ping and 1 packet from the second ping

Rack1R4#simv A 224.8.8.8 count

IP Multicast Statistics

6 routes using 3260 bytes of memory

3 groups, 1.00 average sources per group

Forwarding Counts: Pkt Count/Pkts(neg(-) = Drops) per second/Avg Pkt
Size/Kilobits per second

Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)

Group: 224.8.8.8, Source count: 2, Packets forwarded: 11, Packets received:
11

  RP-tree: Forwarding: 0/0/0/0, Other: 0/0/0

  Source: 172.10.27.2/32, Forwarding: 1/1/100/0, Other: 1/0/0

  Source: 172.10.27.7/32, Forwarding: 10/0/100/0, Other: 10/0/0

Hope I give you enough input. Can anyone help me on this? Thank you.

FYI, when I try to use two other PE with 12.4(16a) IOS, the second ping
results in 4 packets success in total of 10.

Rin

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Received on Tue Jun 02 2009 - 12:44:39 ART