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Hi Anderson,
When you configure the *ip igmp static-group* command, packets to the group are fast-switched out the interface, provided that packets were received on the correct reverse path forwarding (RPF) interface.
Configuring the *ip igmp static-group* command is unlike configuring the *ip igmp join-group* command, which allows the router to join the multicast group. This configuration of the *ip igmp static-group* command would cause the upstream routers to maintain the multicast routing table information for that group, which would ensure that all the paths to that multicast group are active.
with ip igmp join-group, the router processes the multicast traffic locally, so you can ping and test.
Thanks
Shanky

On 7/31/06, Anderson Mota Alves wrote: > > Hi Shanky, > > That’s my understanding as well, ip igmp join-group the router will > process > and respond to ICMP request to the group and when you configure using ip > igmp static-group the router won’t process it > and will pass directly the requests to the source of the multicast group > using fast switch process. > > So since the question advises you to configure and not allow SW1 to > process > switch the traffic and > also says that that the application he is using will not be generating > IGMP > join messages so for testing purposes I think the only way is to configure > for the router to respond to ICMP requests is using “ip igmp join-group” > but > the solution says otherwise. > > > >From: Shanky > >Reply-To: Shanky > >To: “Anderson Mota Alves” > >CC: ccielab@groupstudy.com > >Subject: Re: IEWB - Lab 6 - Task 6.4 (Multicast Testing) > >Date: Mon, 31 Jul 2006 19:39:27 +0530 > > > >Hi, > > > >In my understanding, > > > >ip igmp join-group will cause the router to process the multicast traffic > >ip igmp static-group will cause the router to flood the traffic on to the > >multicast enabled interfaces but not process it. > > > > > > > > > >On 7/31/06, Anderson Mota Alves wrote: > > > > > > Hi Brians, > > > > > > The question is asking you to configure the igmp group 225.25.25.25for > > > testing purposes, to be configured on SW1 and to not allow SW1 to > >process > > > switch this traffic: > > > > > > From my understanding in order for you to enable a group to be fast > >switch > > > process you need to configure it with command “ip igmp static-group” > so > >I > > > configured using the command “ip igmp join-group” but when I took a > look > > > in > > > the solution for this task the solution was pointing the correct > answer > > > being “ip igmp static-group”. > > > > > > > > > http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/himc_r/mlt_i1h.htm#wp1130052 > > > >Thanks > > > >Shanky > > > >Is the solution wrong or I may be missing something here? > > > > > > Thanks, > > > > > > Andy > > > > > > > _______________________________________________________________________ > > > Subscription information may be found at: > > > http://www.groupstudy.com/list/CCIELab.html > > > >_______________________________________________________________________ > >Subscription information may be found at: > >http://www.groupstudy.com/list/CCIELab.html