10-20-2009 03:14 AM - edited 03-04-2019 06:26 AM
Dears,
I have customer Netwrok Running Sparse-Dense multicast, and we will implement Nexus 7000 ( Which supports Sparse only).
So can we configure Sparse on Nexus to work with The existing Sparse-Dense ?
If Yes, What is configuration shoud be done on the New Switches ?
Thanks,
10-20-2009 03:29 AM
Hello Mohamed,
sparse-dense-mode works on a per group basis for all groups that have an RP serving it behaves like sparse-mode.
sh ip pim rp mapping tells you for what groups there are RPs.
you may be interested in the global command
no ip pim dm-fallback
to avoid fallback to dense mode.
Hope to help
Giuseppe
10-20-2009 04:41 AM
Thanks Giuseppe for your reply
My question is: On the Existing PIM Configuration Sparse-dense is there, and on the new Nexus i have Sparse only, How can i make Sparse on Nexus work with the Existing Sparse-Dense ?
Thanks again for your answer
10-20-2009 06:02 AM
Hello Mohamed,
as I have written in my first post, interaction should be fine for all groups treated as sparse mode.
if all your multicast traffic is in sparse mode.
sparse-dense-mode is used by autoRP to allow propagation of mapping messages on 224.0.1.39 and 224.0.1.40.
if you have user traffic in groups treated as dense mode this can be a problem
see
You need to verify if sparse-dense mode is used only for autoRP or also for user traffic.
Hope to help
Giuseppe
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