RE: multicast question

From: Ronnie Royston (RonnieR@xxxxxxxxxxxxxxxxx)
Date: Sun Mar 04 2001 - 20:49:15 GMT-3

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You can simulate an IGMP_JOIN with the interface command, ip igmp join-group
x.x.x.x.

If you're running sparse-mode only, multicast traffic recieved on an
interface will be pruned if there are no recievers. The ip igmp join-group
command will make a static entry for that group (make a static reciever) and
the router won't prune for that group.

-----Original Message-----
From: tom cheung
To: ccielab@groupstudy.com
Sent: 3/4/01 3:02 PM
Subject: multicast question

Hi group,
If I don't have any multicast source or receivers in my lab, can I trick
the
routers in believing there're multicast devices so that they won't prune

back the spt? Any help will be appreciated.

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