From: arnaud.huret@xxxxxxxxxxxxxx
Date: Thu Nov 08 2001 - 13:26:22 GMT-3
Dense mode works fine because the first packet is broadcasted.
In Sparse mode, if you are a mere client you have to join the group by
sending an igmp report before being able to receive the traffic.
After a certain amount of time, if the client does not send regularly igmp
reports, traffic is pruned towards this client and you have to subscribe
again.
Internet
Jasonw@logic.bm@groupstudy.com - 08/11/2001 15:29
Veuillez ripondre ` Jasonw@logic.bm
Envoyi par : nobody@groupstudy.com
Pour : ccielab
cc :
ccc :
Objet : Multicast question
With Sp-dense mode configured on various routers connected via ethernet
and hdlc, and auto rp up and runnning.
I can ping the multicast groups that were joined by two rtrs.
However, one of the groups, when I first ping I get a timeout. When I
ping again, I get a response.
After a period of time, I need to ping twice to get a response, the
first seems to time out.
Is this normal activity?
Is the rp losing the entry for that multicast group and goes looking
once it gets the first ping?
No nbma involved, and the rtrs on the cat all have cgmp enabled as does
the cat.
Dense mode works fine....
Jason Whelan, MCSE,MCNE,CCNP
Network Ops
Logic Communications
www.logic.bm
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