All things related to multicast

["Foggi, Nicola" <>]

Title: RE: [Fwd: Bradley needs urgent help with AccessGrid]

The AG Event is going to be between

DePaul University (AS20130)
(no current AG client in venue)

TRECC (AS26406)
66.99.215.132
66.99.215.133

And Bradley...

The TRECC AG Venue multicast information is:

video 224.2.237.8 port 50246 ttl 127
audio 224..2.142.73 port 50238 ttl 127

Nicola

-----Original Message-----
From: Caren Litvanyi []
Sent: Thu 1/12/2006 8:40 AM
To: Cory; bdr
Cc: ; ; ;
Subject: Re: [Fwd: Bradley needs urgent help with AccessGrid]

As mentioned earlier, We're seeing no routes in inet.2 (multicast)
from Bradley.  I pulled the AS off that last mail, and I see
everything from Bradley has the path 22335 32698 26367.  So
address-family multicast in BGP needs to be checked between
Bradley and PeoriaNEXT, and PeoriaNEXT and MREN.  After that's
running, we'll look at MSDP.  Can someone give me a source
addr at Bradley for this multicast session and the group address?
Would also be nice to know the IP of an active receiver.
(I am wearing my Abilene hat here - I have no visibility
into MREN.)
Thanks,
Caren
------------
Caren Litvanyi, network engineer
Global Research NOC at Indiana University

o:812-856-4576  c:720-839-7739


On Wed, 11 Jan 2006, David Farmer wrote:

> If I had to guess MSDP isn't setup quite correctly.  What RP addresss
> are you using?
>
> The RP must put the sources into MSDP and uses the RP address to
> originate the MSDP messages, which must properly RFP check in
> remote ASes.
>
> Otherwise check with MREN, I remember something about the
> Force10 having some kind of Multicast bug.  I'm, not sure if it is still a
> problem or if it was even related to these symptoms.
>
> On 11 Jan 2006 bdr wrote:
>
>> I'm trying to remember what's wrong with the border router ... I think
>> it's a Cisco ... and advice for Cory?
>>
>> -------- Original Message --------
>> Subject:     Bradley needs urgent help with AccessGrid
>> Date:        Wed, 11 Jan 2006 17:51:15 -0600
>> From:        Rabe, Cory <>
>> To:  <>
>> CC:  <>, <>
>>
>>
>>
>> We are having problems with AccessGrid here.  Our networking support has been unsuccessful in finding a solution thus far.
>>
>>
>>
>> We ARE able to see and hear remote sites but they AREN'T able to see or hear us.  Of course, when we switch to unicast the promlems go away...
>>
>> We are able to conference amongst each other on our campus but anything going out doesn't get thru.
>>
>> We are going to start troubleshooting this at 8am.  If you could provide us some assistance that would be great.  Let us know regardless.
>>
>> Thanks
>> Cory Rabe
>>
>>
>>
>>
>> --
>> Bob Riddle ()    Technologist,Internet2
>> 3025 Boardwalk, Suite 100         Ann Arbor, Michigan  48108
>> Business Phone: 734.913.4257      Fax Number:  734.913.4255
>>
>> "Never be afraid to try something new.  Remember that amateurs built the Ark.  Professionals built the Titanic."  Dave Barry
>
> =================================================
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