From: Learn Cisco (cisco.learn@yahoo.com)
Date: Mon Jul 07 2008 - 20:27:14 ART
hi, i'm trying to get a better grasp on multicast topics. any feedback to the following questions would be much appreciated:
1.) was wondering if anyone can help differentiate between the use of "ip pim spt-threshold infinity" and "no ip pim dm-fallback". they both seem to prevent sparse-dense-mode and/or sparse-mode pim from reverting back to a sourced-tree / shortest-path tree unless I'm missing something.
2.) would "ip pim accept-rp auto-rp" be needed along with one of the cmds above to ensure no spt paths form?
3.) when would "ip pim accept-rp x.x.x.x x" be used? i guess if i get a question/requirement that states to have a device accept join/prune messages for an rp i'd know to use this feature, but it seems as though their might be more to this thing???
4.) "ip pim autorp listener" is the feature to use when desiring to use sparse-mode along with auto-rp, right? (without statically assigning the rp mapping on all sparse-mode devices)
thanks in advance for any input,
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