From: Brian Hescock (bhescock@xxxxxxxxx)
Date: Sun Jan 21 2001 - 13:27:08 GMT-3
Steve,
The config looks fine, at least at first glance. Are you sure you
ethernet 0 interface is up/up? Also, we've been running into some
multicast problems lately where adding "ip igmp join-group" doesn't add
the interface to the outbound interface for the (S,G) (Source, mcast
Group). Do a "show ip mroute" and see if E0 is on the outbound
interface. If no, then the traffic isn't being forwarded as it should and
perhaps the problem could be preventing the router from replying to your
ping as well. Just speculation though. The workaround for the bug is to
remove and readd pim to the interface where you have ip igmp join-group.
Brian
On Sun, 21 Jan 2001, tv wrote:
> I think you are not telling r2 to join anything. Recommendations:
>
> Try to make a loopback on r1 the rp.
> Have r2 join the multicast address.
> do a show ip mroute on r2 before you ping.
>
> Let us know how it works.
>
> tv
>
> ----- Original Message -----
> From: "Steve Clubb" <sclubb@cattech.com>
> To: <ccielab@groupstudy.com>
> Sent: Sunday, January 21, 2001 2:15 AM
> Subject: ip multicasting and ping
>
>
> > For all you multi-cast wizards out there, I have 2 routers configured as
> > such:
> >
> > r2 cannot ping multicast 224.2.2.2-4 on r1's e0.
> >
> > Any reasons why?
> >
> > Thanks,
> >
> > Steve
> >
> >
> > r1#
> > ip multicast-routing
> > ip dvmrp route-limit 20000
> > !
> > interface Ethernet0
> > ip address 137.20.10.1 255.255.255.0
> > ip pim sparse-mode
> > ip igmp join-group 224.2.2.2
> > !
> > interface Serial0.2 point-to-point
> > ip address 137.20.12.1 255.255.255.0
> > ip pim nbma-mode
> > ip pim sparse-mode
> >
> > r2#
> > ip multicast-routing
> > ip dvmrp route-limit 20000
> > !
> > interface Serial0
> > ip address 137.20.12.2 255.255.255.0
> > ip pim nbma-mode
> > ip pim sparse-mode
> > !
> > interface TokenRing0
> > ip address 137.20.22.1 255.255.255.240
> > ip multicast use-functional
> > ip pim sparse-mode
> > !
> > ip pim rp-address 137.20.12.1
> >
> >
> > r2#ping 224.2.2.2
> >
> > Type escape sequence to abort.
> > Sending 1, 100-byte ICMP Echos to 224.2.2.2, timeout is 2 seconds:
> > ..
> > r2#
> >
> >
> >
> >
> >
> >
> >
> >
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