Jim, The only reason you would configure the command is if a question stated something to the affect of "configure R1 Fa0/0 to receive multicast traffic for group x.x.x.x". The purpose of the command is to statically configure the interface to recieve traffic from a group. If a client was on the network they would join the group via a join request and would not require the router to be statically assigned to the group.
It can be good to use when you want to test your multicast/RP configuration but is not a required component. On Thu, Jun 12, 2008 at 5:33 PM, Jim Hooker <[EMAIL PROTECTED]> wrote: > thx, that's what I needed - i suppose my larger question would then be how a > proctor would grade my lab without it > > > Jim > > On Thu, Jun 12, 2008 at 3:32 PM, Roger RPF <[EMAIL PROTECTED]> wrote: >> >> Hi Jim, >> >> >> >> I'm not sure if I understand your question correct but in the livenetwork >> you don't need the ip igmp join group for a stream to run. It's more used >> for "test purposes" or simulating a client. Take a look at the following >> description about the join group: >> >> >> >> >> http://www.cisco.com/en/US/docs/ios/ipmulti/command/reference/imc_02.html#wp1012153 >> >> >> >> regards >> >> >> >> Von: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] Im Auftrag von Jim Hooker >> Gesendet: Donnerstag, 12. Juni 2008 20:36 >> An: [email protected] >> Betreff: [OSL | CCIE_RS] igmp join >> >> >> >> Is the interface command 'igmp join-group' only a filtering mechanism >> (i.e., acts as an ACL once applied to prevent some clients from some >> groups)? I setup a test in a personal lab with an auto-rp sparse-dense mode >> config and was successful at streaming video from server to client...but >> never used the igmp join-group command. I checked the client-end >> last-hop router and it gives me results from the igmp show commands despite >> everything. > -- Tyson Scott - CCIE #13513 R&S and Security Technical Instructor - IPexpert, Inc. Telephone: +1.810.326.1444 Fax: +1.810.454.0130 Mailto: [EMAIL PROTECTED] Join our free online support and peer group communities: http://www.IPexpert.com/communities IPexpert - The Global Leader in Self-Study, Classroom-Based, Video On Demand and Audio Certification Training Tools for the Cisco CCIE R&S Lab, CCIE Security Lab, CCIE Service Provider Lab , CCIE Voice Lab and CCIE Storage Lab Certifications.
