All things related to multicast

[zaid <>]

Al,

Please email your request to vbns-eng if you want the FR circuit
parameters to change.

Thanks,
Zaid
-----Original Message-----
From: Al Adler 
<>
To: TECH 
<>
Cc: 

 
<>;
 Internet2 Multicast
WG 
<>;
 Bill Owens 
<>;
 Hans
Kuhn 
<>;
 

<>;
 

 
<>
Date: Thursday, February 15, 2001 2:51 PM
Subject: Re: Odd multicast packet loss to Nysernet


Hi all;
    I think we may have fixed our little 65 second packet loss
problem. As it
turns out every 65 seconds we were overflowing our frame relay
broadcast queue
on the VBNS T1; it seems that VBNS would just stop accepting packets
for a
couple of seconds and the overlflow would get dropped. As a workaround
I've
enlarged the queue so that the packets aren't lost. We'll have to keep
an eye
on the jitter this may cause but it's a definite improvement. Now all
I have
to do is find someone at VBNS who knows something about frame relay
setup.
Thanks to all for the debug assistance.

TTFN,
Al

Marshall  Eubanks wrote:

> If you could get the debug version at
http://www.mctplayer.com/debug/
> it would be useful, if you can put it on a Linux box.
>
> > Marshall Eubanks wrote:
>
> >
> >> Hello;
> >>
> >> We have noticed an odd pattern of packet loss to nysernet (AS
3754) from
> >> MulticastTech
> >> (AS 16517).
> >
> > Are you seeing similar losses to Cornell (AS 26)?
> >
> > We have multicast peering with both NYSERNet (NYSERNet 2000) and
vBNS,
> > and though I thought we were reaching you through our vBNS
connection (a
> > lot has changed since then -- early Jan.), an mtrace on the access
grid
> > beacon group looks similar to what you showed:
> >
> >
> > @pgp1$ mtr -s hendrix.multicasttech.com 233.2.171.1
> > Mtrace from 63.105.122.14 to 128.253.64.34 via group 233.2.171.1
> > Querying full reverse path...
> > 0  pgp1.cit.cornell.edu (128.253.64.34)
> > -1  rhodes1-8540-vl404.cit.cornell.edu (128.253.64.5)  PIM
thresh^ 0
> > [default]
> > -2  cornellnet3-gig1-0-0.cit.cornell.edu (128.253.222.161)
PIM/BGP4+
> > thresh^ 0  Reached RP/Core
> > -3  ? (199.109.2.30)  PIM  thresh^ 1
> > -4  clev-ipls.abilene.ucaid.edu (199.109.2.2)  PIM/BGP4+  thresh^
0
> > Reached RP/Core
> > -5  ipls-clev.abilene.ucaid.edu (198.32.8.25)  PIM/BGP4+  thresh^
0
> > Reached RP/Core
> > -6  jn1-at1-1-0-2008.dng.vbns.net (204.147.128.13)  PIM  thresh^ 1
> > -7  jn1-so7-0-0-0.nor.vbns.net (204.147.136.147)  PIM  thresh^ 1
> > -8  jn1-so7-0-0-0.wor.vbns.net (204.147.136.133)  PIM  thresh^ 1
> > -9  jn1-so7-0-0-0.wae.vbns.net (204.147.136.136)  PIM  thresh^ 1
> > -10  Multicast-inc.wae.vbns.net (204.147.129.90)  PIM  thresh^ 0
> > Reached RP/Core
> > -11  hendrix.multicasttech.com (63.105.122.14)
> > Round trip time 263 ms; total ttl of 10 required.
> >
> > -Phil
> >
> >
>
> --
>                                  Regards
>                                  Marshall Eubanks
>
> This e-mail may contain confidential and proprietary information of
> Multicast Technologies, Inc, subject to Non-Disclosure Agreements
>
> T.M. Eubanks
> Multicast Technologies, Inc
> 10301 Democracy Lane, Suite 410
> Fairfax, Virginia 22030
> Phone : 703-293-9624
> Fax     : 703-293-9609
> e-mail : 
> 
>      
>