From: Patrick Bikar (pbikar@xxxxxxxxx)
Date: Sat Feb 10 2001 - 15:36:20 GMT-3
Alan,
Could have been but my setup doesn't have multiple path :
r10 (igmp join-group 2)
|
|
r2 (hub-MA-RP1) --- r5 (spoke1-RP2) ----r7
|
|
r9 (spoke2)
|
|
r4 (igmp join-group 1)
add to this a third spoke :
r2
|
|
r3 (spoke3)
|
|
r6 (igmp join-group 1)
And this is what I get on r7 :
r7#ping 230.0.0.1 (== GROUP1)
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 230.0.0.1, timeout is 2 seconds:
Reply to request 0 from 172.16.1.164, 16 ms
Reply to request 0 from 172.16.1.226, 40 ms
Reply to request 0 from 172.16.1.226, 32 ms
Reply to request 0 from 172.16.1.164, 16 ms
r7#ping 235.0.0.1 (== GROUP2)
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 235.0.0.1, timeout is 2 seconds:
Reply to request 0 from 172.16.1.194, 84 ms
Reply to request 0 from 172.16.1.194, 380 ms
Reply to request 0 from 172.16.1.194, 380 ms
Reply to request 0 from 172.16.1.194, 380 ms
Reply to request 0 from 172.16.1.194, 280 ms
Reply to request 0 from 172.16.1.194, 280 ms
Reply to request 0 from 172.16.1.194, 280 ms
Reply to request 0 from 172.16.1.194, 184 ms
Reply to request 0 from 172.16.1.194, 184 ms
Reply to request 0 from 172.16.1.194, 180 ms
Reply to request 0 from 172.16.1.194, 84 ms
Reply to request 0 from 172.16.1.194, 84 ms
r7#
Amazing no : do you guys get something different ?
Cheers,
Patrick.
At 11:55 10/02/2001 -0600, Alan Basinger wrote:
>Could it also have to do with multiple routes to and from the Mcast group?
>
>Alan
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Patrick Bikar
>Sent: Saturday, February 10, 2001 11:07 AM
>To: jconnary@cisco.com
>Cc: ccielab@groupstudy.com
>Subject: multiple multicast ping responses
>
>
>Hello Julie Ann and the Group,
>
>I have read your previous posting regarding the multiple response you got
>when pinging a multicast group . I have got into the same problem, and I
>can't seem to find an answer.
>
>I have a FR hub and spoke topology with MA on the hub and 2 RPs : 1 on the
>hub and 1 on a spoke. Everything *looks* fine : my "sh ip mr" looks as
>expected, and I can ping all interfaces for which I have configured "ip
>igmp join-group". I have configured ip pim nbma-mode on the hub (fr
>point-to-multipoint).
>
>However ... when I ping a specific group which has 2 receivers, I get
>sometimes up to 10 answers !!! I suspect this is due to the nbma multipoint
>interface, but I have not been able to indentify the specific mechanism.
>
>Have you managed to find an explanation to this phenomenon ?
>
>Thank you,
>Patrick.
>
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