From: YJC (stiff.yu@xxxxxxxxxxxxxxxxxx)
Date: Fri Feb 09 2001 - 04:41:41 GMT-3
is there 234.5.6.7 or default routing in your routing .?
----- Original Message -----
From: Rene Mendoza <rene.mendoza@sabre.com>
To: CCIE_Lab Groupstudy List <ccielab@groupstudy.com>
Sent: Friday, February 09, 2001 4:01 AM
Subject: Multicasting question.
> I have set up a lab involving two workstations running MCASTER to test
> my multicast configs. They are on opposite sides of my network and are
> able to join and receive traffic from multicast group. I have tested
> dense and sparse modes and they work just fine. My question to anyone
> is why can't the router ping the multicast group address? Does the
> router have to join the group first? Also, one other observation (not
> related to above), I can still ping a multicast address on one remote
> router to the other even after I have removed all multicast related
> commands. Example router X can still ping router Y when router X has
> multicasting turned off. Router Y was given command ip igmp join-group
> 234.5.6.7 command. Here is the physical layout:
>
> Router X-----frame cloud------RouterNY----------Serial---------Router
> Y----eth0/0 where igmp join-group was added.
>
> The show ip mroute command does not show any multicast routes on Router
> X but I can still ping the 234.5.6.7 address. Makes you wonder if this
> is a true test for your configs. Anyone else notice this?
>
> thanks for any responses,
>
> Rene Mendoza
> Senior Consultant
> Sabre
>
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