Depends upon what you want to match (e.g. lab requirements), however I think matching on 224.0.0.0 - 239.255.255.255 is probably all that is needed. I guess you can match on both if need be using one or two ACL statements
224.0.0.0/4 240.0.0.0/4 So you could match them separately or together like you show. 224.0.0.0 15.255.255.255 = 224.0.0.0 - 239.255.255.255 240.0.0.0 15.255.255.255 = 240.0.0.0 - 255.255.255.255 OR how you had it 224.0.0.0 31.255.255.255 = 224.0.0.0 - 255.255.255.255 So I guess, depending upon the lab requirements you would choose one or the other Not sure if that helps or not, but generally matching on 224.0.0.0 - 239.255.255.255 is enough IMHO Thank you, Steve E. Di Bias Network Engineer - Information Systems Valley Health System - Las Vegas Office - 702- 369-7594 Cell - 702-241-1801 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of marc abel Sent: Saturday, June 18, 2011 3:26 PM To: [email protected] Subject: [OSL | CCIE_RS] Multicast mask I often see 31.255.255.255 used as a wildcard mask to match all multicast addresses. Doesn't this technically match 224.0.0.0 - 255.255.255.255, and multicast stops at 239.255.255.255? Do we just not care since 240.x.x.x.x-255.x.x.x aren't in use? -Marc _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com UHS Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient (s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this information is prohibited. If this was sent to you in error, please notify the sender by reply e-mail and destroy all copies of the original message. _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
