All things related to multicast

[Amel Caldwell <>]

I saw the same sort of thing that Greg and Alan reported.  What are you
setting the Time To Live (TTL) on the multicast packets?  I often see problems
with the TTL being to small.

Regards

Amel Caldwell
University of Washington

On Thu, 6 Nov 2003, Patcharee Basu wrote:

>Dear All,
>
>At Uninet, there is a looking glass
>http://www.uni.net.th/cgi-bin/lookinglass/lg.pl.
>
>I see the packet forwarded to Abilene, and the number of packets keep
>changing over time.<sh ip mroute 233.18.159.50 count>
>
>Best regards,
>Patcharee
>----- Original Message -----
>From: "Brent Sweeny" 
><>
>To: "Greg Shepherd" 
><>
>Cc: "Patcharee Basu" 
><>;
> 
><>
>Sent: Wednesday, November 05, 2003 11:54 PM
>Subject: Re: Testing multicast stream from Thailand
>
>
>> Thailand (Uninet) peers with us in Los Angeles.
>>
>> On Wed, Nov 05, 2003 at 08:47:53AM -0800, Greg Shepherd wrote:
>> >
>> > I see your SA in msdp - peer-rpf from Abilene.
>> >
>> > shep@paix>
>> >  show msdp source-active group 233.18.159.50
>> > Group address   Source address  Peer address    Originator      Flags
>> > 233.18.159.50   203.159.28.31   198.9.201.205   203.159.128.5   Accept
>> >                                 ^^^^^^^^^^^^^
>> > Abilene-------------------------|||||||||||||
>> >
>> > My local RP joins the (S,G) tree toward your source through Abilene, but
>I
>> > don't get any data:
>> >
>> > OHALL-8801# sh ip mr 233.18.159.50 sum
>> > IP Multicast Routing Table for Context "default"
>> >
>> > Total number of routes: 73
>> > Total number of (*,G) routes: 5
>> > Total number of (S,G) routes: 68
>> > Group count: 5, average sources per group: 13.6
>> >
>> > Group: 233.18.159.50/32, Source count: 1
>> > Source            packets       bytes           aps   pps       bit-rate
>oifs
>> > (*,G)             0             0               0     0         0 bps
>1
>> > 203.159.28.31     0             0               0     0         0 bps
>1
>> >
>> > Where do you peer with Abilene?
>> >
>> > Greg
>> >
>> > On Wed, 5 Nov 2003, Patcharee Basu wrote:
>> >
>> > > Dear Internet2 Folks,
>> > >
>> > > Asian Institute of Technology(AIT), Thailand, has just finished
>multicast
>> > > configuration. I would like to ask if some friends in the WG can help
>check
>> > > if you could get a multicast stream from AIT,
>> > > http://www.mmserv.ait.ac.th/MPU-web/liveconf/MPUMediaStation.asx,
>> > > It's a 256-kbps window media stream, multicast group = 233.18.159.50
>port
>> > > 15000 , source addr = 203.159.28.31 port 1035.
>> > >
>> > > The current status of multicast testing with Internet2.
>> > >
>> > > Internet2 -> AIT:
>> > > AIT can receive multicast stream from Internet2, multicasttech.com,
>> > > www.americafree.tv.
>> > >
>> > > AIT -> Internet2:
>> > > An Abilene network engineer has helped me checking. The traffics flows
>all
>> > > the way from source to his campus. But at his campus router, there was
>a
>> > > source tree state but no traffic flowing. We still don't know yet what
>is
>> > > the problem. -- Therefore, I would like to know if there is the same
>problem
>> > > on other campus so I write here if someone could help joining the
>stream or
>> > > telling us what could be a problem.
>> > >
>> > > Thank you very very much.
>> > >
>> > > Best regards,
>> > > Patcharee
>
>