Re: Multicast

From: Tim Last (packtmon@yahoo.com)
Date: Thu Apr 08 2004 - 21:09:12 GMT-3


I think that since "deny" is the default, the example you showed below doesn't do anything - it's kind of like creating an access-list with only 1 deny entry and no permit entries. It seems to me that this command s/b used to specify the continuous range of mcast addresses you want to permit. Whatever mcast adddr isn't permitted is, by default, denied.
 
HTH

gladston@br.ibm.com wrote:
Difficult time trying to understand the example of using "ip igmp profile" to limit a multicast group on 3550.

Not sure if I limit one address, the others will pass by default:

ip igmp profile 40
deny
range 231.0.0.0 231.255.255.255

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12119ea1/3550cr/cli1.htm#33668

Any help?



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