[j-nsp] Static AnyCast PIM + MSDP not working

[Doug Hanks]

Stacy,

I disabled PIM on the multicast source.  I also disabled PIM on all of the devices management interfaces (172.16.1.0/24).  You were correct as the DR was being elected on the broadcast network.

It now works as expected.  Thanks a million!

....................................
Doug Hanks
Systems Engineer
JNCIP-M/T #1441

-----Original Message-----
From: Stacy W. Smith [mailto:stacy at acm.org] 
Sent: Tuesday, June 28, 2011 3:31 PM
To: Doug Hanks
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] Static AnyCast PIM + MSDP not working

Hi Doug,

Disable PIM completely on SRX100-1. That device is the source of your multicast traffic, but doesn't need to participate in PIM, just like a normal mcast source would not participate in PIM.

Your output shows that SRX100-1 has become the DR for the link between SRX100-1 and J1. Since J1 is not the DR on the interface where it's receiving the mcast traffic, it's not going to forward mcast traffic and in-turn is not going to establish PIM/MSDP state. Disabling PIM on SRX100-1 will avoid this problem.

Also, make sure you add the "interface" option to the ping you are originating on SRX100-1 to force the traffic out the appropriate interface toward J1.

If you still have problems, please include the output of: "show multicast route extensive", "show pim rps extensive", and "show pim join extensive" on all the routers.

--Stacy


On Jun 28, 2011, at 3:50 PM, Doug Hanks wrote:

> Hello experts,
> 
> I'm new to multicast and I'm having some configuration issues.  I'm configuring a static anycast PIM with 2 RPs.  I'm using msdp between the 2 RPs.  I have a directly attached multicast source to the first RP, and a directly attached multicast receiver on the other RP.  The goal is to create a successful POC demonstrating static anycast RPs with multicast source and listener using different RPs.
> 
> I am unable to ping from SRX100-1 (ping bypass-routing ttl 10 225.0.0.1) to the receiver SRX100-2 (igmp static group 225.0.0.1 and sap listener 225.0.0.1).
> 
> One thing I noticed is that the RP attached to the multicast source shows the S,G, but it isn't using msdp to transfer the group information to the other RP.
> 
> What am I doing wrong?
> 
> Topology http://i.imgur.com/pU31g.png
> J1 http://pastebin.com/8x87Jgy3
> J2 http://pastebin.com/SHRKyWBB
> SRX100-1 http://pastebin.com/0ug1kZcC
> SRX100-2 http://pastebin.com/JL4KeGRw
> 
> Thank you,
> 
> ....................................
> Doug Hanks
> Systems Engineer
> JNCIP-M/T #1441
> 
> 
> 
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