In order to enable CGMP on a switch IGMP snooping has to be disable. This is what I found on CCO: http://www.cisco.com/warp/public/473/22.html#IGMP%20Snooping So is my understanding right. On c5000/c6000 series I have to issue: set igmp disable in order for cgmp to be enabled? Issuing the set cgmp enable command won't disable igmp automatically? Thanks for your help! ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]