From: Thomas Dean (tj_dean@hotmail.com)
Date: Sun Aug 17 2003 - 13:07:55 GMT-3
Hi Seong
Brief explanation.
Used in hub and spoke configurations.
Configures a multiaccess WAN interface to be in nonbroadcast multiaccess
mode.
Requires pim sparse-mode on an interface.
When router receives Join, it puts the interface AND joiner in the OIL.
When Prune is received, the interface/joiner is removed from the OIL.
Recommended for Frame relay and ATM interfaces, not suitable for LAN
interfaces.
Puts an entry for every receiver on a physical or p2mp WAN interface.
This allows individual routers to send a Prune without the whole interface
being pruned.
Example below assumes Central router (RP) and 4 hub routers (192.1.1.12-5)
but only three (192.1.1.2-4) have receivers.
(*, 224.1.1.1), 00:03:23/00:00:00, RP 10.1.1.1, flags: S
Incoming interface: Ethernet0, RPF nbr 10.1.1.1
Outgoing interface list:
Serial0, 192.1.1.2, Forward/Sparse, 00:00:12/00:02:48
Serial0, 192.1.1.3, Forward/Sparse, 00:03:23/00:01:36
Serial0, 192.1.1.4, Forward/Sparse, 00:00:48/00:02:12
See
http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/mcst_sol/frm_rlay.htm#xtocid5
for some fairly good examples.
Happy reading
Tom
>Hi group,
>I searched thru the Doc CD but couldn't find much about the use of IP PIM
>NMBA-MODE. Can somebody briefly tell me, when and where we usually use this
>command?
>Thanks and regards -SH
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