From: tom cheung (tkc9789@xxxxxxxxxxx)
Date: Wed Nov 14 2001 - 15:01:12 GMT-3
Tony,
You should put the mapping agent on the hub router and turn on ip pim nbma
as well. There's a detailed treatment of multicast over NBMA issues in Beau
Williamson's book.
HTH
Tom
>From: "Tony Ng" <tonyng42@usa.net>
>Reply-To: "Tony Ng" <tonyng42@usa.net>
>To: "Groupstudy" <ccielab@groupstudy.com>
>Subject: multicast problem (auto-rp) - configured over frame relay
>Date: Wed, 14 Nov 2001 10:46:23 -0800
>
>I have a problem with configuring auto-rp. Here's my network below:
>
>R1====FR Network =====R2
> |
> R3======R4=====R5
>
>* FR network is using all physical interfaces. R4 is the hub while R1 & R2
>are both spokes.
>* all interfaces are configured as sparse-dense-mode.
>
>I have configured several join-groups in R2, and I am trying to make R2 &
>R5
>the candidate-RPs (each router serves a different set of Multicast groups).
>Also, I have configured R1 and R3 as mapping agents. R3 is working fine
>and
>dandie as the Mapping agent (verified by "debug ip pim auto" and "show ip
>pim rp mapping") and receives rp-announce multicast (224.0.1.39) from both
>R5 and R2. However, R1 can't seem to receive any rp-announce msg from R2.
>
>I have no ACL configured in this network and the broadcast statements are
>under R1 & R2. Also, I tried using "ip pim nbma-mode" but that didn't
>help.
>
>I am leaning towards a FR issue. Any help and suggestions would be
>appreciated.
>
>Thanks in advance,
>Tony Ng
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