All things related to multicast

["Bruce Campbell" <>]

(I work with Yuri)

Here is a topology diagram of our test lab...

  http://ist.uwaterloo.ca/~bruce/pimlab.html



On 9/21/07, Yuri Kolomiyets 
<>
 wrote:
> Hi All,
>
> We're having some troubles with PIM between Cisco and HP. Everything
> works fine, except any stream freezes for 1 second every minute. We
> traced it back to the periodic join/prune updates coming from HP which
> contain a (S,G) prune for the active stream. Then 1 second later the HP
> sends a join for the same (S,G).
> Here's debug from the cisco side:
>
> *Mar  4 00:21:49.849: PIM(0): Received v2 Join/Prune on
> GigabitEthernet1/0/24 from 10.0.0.2, to us
> *Mar  4 00:21:49.849: PIM(0): Join-list: (*, 239.255.100.100), RPT-bit
> set, WC-bit set, S-bit set
> *Mar  4 00:21:49.849: PIM(0): Update GigabitEthernet1/0/24/10.0.0.2 to
> (*, 239.255.100.100), Forward state, by PIM *G Join
> *Mar  4 00:21:49.849: PIM(0): Prune-list: (10.0.3.2/32, 239.255.100.100)
> RPT-bit set
> *Mar  4 00:21:49.849: PIM(0): Prune
> GigabitEthernet1/0/24/239.255.100.100 from (10.0.3.2/32,
> 239.255.100.100) - deleted
> *Mar  4 00:21:50.848: PIM(0): Received v2 Join/Prune on
> GigabitEthernet1/0/24 from 10.0.0.2, to us
> *Mar  4 00:21:50.848: PIM(0): Join-list: (10.0.3.2/32, 239.255.100.100),
> S-bit set
> *Mar  4 00:21:50.848: PIM(0): Add GigabitEthernet1/0/24/10.0.0.2 to
> (10.0.3.2, 239.255.100.100), Forward state, by PIM SG Jon
>
>
> This is happening in our production network, as well as a little lab we
> set up to test this. The lab setup is a 3750 Cisco and a 3500 HP with 2
> laptops connected to each switch. If anyone interested in the lab
> configs, I posted them here:
> http://ist.uwaterloo.ca/~ykolomiy/multicast-lab-configs.txt
>
> If anyone has any idea why this might be happening and what we can do to
> fix it, we'd really appreciate it.
>
> Thanks a lot,
>
> Yuri Kolomiyets
>
> Network Services
> Information Systems & Technology
> University of Waterloo
>
> E-mail: 
> 
> Phone: (519) 888-4567 x36999
>
>