From: Chris Riling (criling@gmail.com)
Date: Mon Dec 31 2007 - 05:51:39 ARST
Okay I just labbed this up again and didn't have any issues.. my brain
must've been fried last night... I'm betting there was an underlying unicast
routing issue... Sorry guys!
Thanks!
Chris
On Dec 31, 2007 2:17 AM, Chris Riling <criling@gmail.com> wrote:
> Maybe I should include the task, there could be an interputation issue
> here...
>
> 5.2 Use the fa0/22 interface of SW4 to simulate a client for the group
> 239.1.2.3. Ensure this client responds to multicast packets sourced from
> R7.
>
> If I'm on R7, and I ping 239.1.2.3 that would make R7 a source, and SW4 a
> receiver of that group correct? I'll just stop rambling until I get a chance
> to lab this up and play again... I get the impression that everyone here
> thinks it should be too obvious ;)
>
> On Dec 31, 2007 1:33 AM, Joseph Brunner <joe@affirmedsystems.com> wrote:
>
> > Please use debug's (debug ip pim) to understand the whole process.
> > Capture
> > the output on each router. Remembers its sources to receivers. That's
> > all
> > multicast is.
> >
> > -Joe
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Chris Riling
> > Sent: Monday, December 31, 2007 1:17 AM
> > To: bdennis@internetworkexpert.com
> > Cc: Joseph Saad; groupstudy
> > Subject: Re: PIM NBMA Mode
> >
> > I just kind of assumed, maybe it was a bad assumption? I assumed because
> > I
> > was able to ping the mcast group IP and get a reply when pinging from
> > both
> > R8 and SW4, just not from R7 across the frame cloud. Other traffic
> > across
> > the cloud was passing fine... No, I didn't try putting the join group on
> > R8,
> > the task specified that it needed to be on SW4... I could lab this up
> > again
> > and give it a shot...
> >
> > Thanks,
> > Chris
> >
> > On Dec 30, 2007 11:59 PM, Brian Dennis < bdennis@internetworkexpert.com>
> > wrote:
> >
> > > Just out of curiosity why do you think PIM NBMA mode has anything to
> > do
> > > with this issue?
> > >
> > > Also have you tried putting the IGMP join on R8?
> > >
> > > Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP)
> > > bdennis@internetworkexpert.com
> > >
> > > Internetwork Expert, Inc.
> > > http://www.InternetworkExpert.com <http://www.internetworkexpert.com/><
> > http://www.internetworkexpert.com/>
> > > Toll Free: 877-224-8987
> > > Direct: 775-745-6404 (Outside the US and Canada)
> > >
> > >
> > > >----- Original Message -----
> > > Subject: Re: PIM NBMA Mode
> > > Date: Sun, December 30, 2007 12:50
> > > From: "Chris Riling" <criling@gmail.com>
> > >
> > > > Thanks for responding... R7 cannot ping the multicast group and get
> > a
> > > > reply...the other boxes can, but for some reason it's not working
> > across
> > > the
> > > > frame cloud.
> > > >
> > > > Thanks,
> > > > Chris
> > > >
> > > > On Dec 30, 2007 2:21 AM, Joseph Saad <joseph.samir.saad@gmail.com >
> > > wrote:
> > > >
> > > > > Not sure if you got an answer, but maybe you need to raise the DR
> > > priorit
> > > > > of R8 interface to R8.
> > > > >
> > > > > I fail to understand what your issue is though.
> > > > >
> > > > > On Dec 29, 2007 12:07 PM, Chris Riling < criling@gmail.com>
> > wrote:
> > > > >
> > > > > > Hi Guys,
> > > > > >
> > > > > > Suppose I have the following situation:
> > > > > >
> > > > > > SW4 ------- R8
> > > > > > /
> > > > > > Frame Cloud
> > > > > > |
> > > > > > R7
> > > > > >
> > > > > > SW4 has ip igmp join-group 239.1.2.3 for example
> > > > > > R8 is a multipoint frame hub
> > > > > > R7 is a frame spoke
> > > > > > R8 is the RP via BSR
> > > > > > All relevant interfaces have ip pim sparse-mode and all devices
> > have
> > > no
> > > > > > ip
> > > > > > pim dm-fallback
> > > > > >
> > > > > > What would be required to make this work? I don't have access to
> > my
> > > > > > configs
> > > > > > atm, but I enabled ip pim nmba-mode on the serial interfaces,
> > and I
> > > > > > can't
> > > > > > get it working across the frame cloud. I do have the broadcast
> > > keyword
> > > > > > on
> > > > > > the PVC. R8 and SW4 can both ping the group and get a reply, and
> >
> > > > > > everyone
> > > > > > (including R7) is showing the correct RP via BSR (R8's lo0).
> > What
> > > else
> > > > > > is
> > > > > > needed to make this work over the cloud?
> > > > > >
> > > > > > Thanks,
> > > > > > Chris
> > > > > >
> > > > > >
> > >
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