Hey Ed, 1) You need to use this command if you are using Auto-RP in a sparse-mode environment 2) Basically here is the idea -- OK, think about how Auto-RP works, it uses dense mode to propogate the RP information using 224.0.1.39 and 224.0.1.40.....so by design the information is propogated throughout the entire multicast domain. When you use sparse mode, it basically breaks this concept...because you are not requesting the groups you will not get them. What the command does is sort of a "hack." It allows you to use Auto-RP even though you are using sparse mode. Essentially it says "For 224.0.1.39 and 224.0.1.40 I am allowed to use dense mode, for everything else use sparse mode" HTH,
Regards, Joe Astorino CCIE #24347 (R&S) Sr. Support Engineer - IPexpert, Inc. URL: http://www.IPexpert.com <http://www.ipexpert.com/> _____ From: [email protected] [mailto:[email protected]] On Behalf Of Bodnar, Edward Sent: Sunday, June 07, 2009 8:30 PM To: 'Bryan Bartik' Cc: [email protected] Subject: Re: [OSL | CCIE_RS] IPE vol2 lab 3 I have a question about "ip pim autorp listener" 1. When do I need to use this sparce-mode only ? sparce-dense-mode 2. What does this command do. I take it off my configuration and it seems to be working without it. ED, No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.54/2158 - Release Date: 06/08/09 06:01:00
