From: Edison Ortiz (edisonmortiz@gmail.com)
Date: Sun Feb 25 2007 - 21:35:12 ART
Sounds like a RPF failure. Check your unicast routing table and make sure
the path
taken when pinging the igmp groups is the correct one.
From R4, do a show ip route for R3 Loopback interface. The path to that
destination
must have pim enabled interfaces, if it doesn't you get a RPF.
----- Original Message -----
From: <deji500@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Sunday, February 25, 2007 6:27 PM
Subject: Pinging in multicast
> Hi GS,
>
> I have a slight problem with multicast. R3 is configured with three ip
> igmp join-groups to it's loopback0. R3 is also the AutoRP. R2 is connected
> to R3 via the serial interface and R4 is connected to R2 via the LAN
> interface. R2 is the mapping agent. When I ping the first two groups from
> R4, It times out but when i ping it again, it succeeds. When i ping the
> last group from R4 it succeeds the first time. Does anyone know why i am
> having this problem and how i can rectify it? Also will i loose points for
> this in the lab?
>
> Thanks
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Thu Mar 01 2007 - 07:38:48 ART