[AG-TECH] Testing multicast connectivity...

[Richard Coffey]

I was referring to both problems. The Cisco bug might be a problem as well,
but I think most of our core routers have been upgrade beyond this problem.
I'll check with our NOCC on the IOS revs.

Thanks Bill and Mitch!

-Richard


On 5/20/03 8:24 PM, "Bill Nickless" <nickless at mcs.anl.gov> wrote:

> Ah, this is a different problem.  I thought you were talking about the
> beacon traffic not being heard by other beacons.  Now I understand you're
> talking about your beacon crashing from time to time (or one of the three
> threads).
> 
> Mitch Kutzko <mitch at ncsa.uiuc.edu> has a slightly modified version of the
> beacon code, with larger pre-compiled constant buffers.  I'm not sure if
> Mitch thinks it's ready for prime time yet.  I've copied him on this
> note--Mitch, is it ready for distribution?
> 
> At 05:12 PM 5/20/2003 -0600, Richard Coffey wrote:
>> Hi Bill,
>> 
>> Avtwo.cs.utah.edu is the beacon is question. Every once and a while, Java
>> throws and exception and kills the connection. Thoughts on that?
>> 
>> -Richard
>> 
>> On 5/20/03 4:15 PM, "Bill Nickless" <nickless at mcs.anl.gov> wrote:
>> 
>>> This is consistent with an old bug in Cisco IOS prior to 12.0(10).  If the
>>> router directly connected to the source is running an earlier version, then
>>> the behavior you mention below is possible.
>>> 
>>> What specific beacon sources are you referring to?
>>> 
>>> At 03:57 PM 5/20/2003 -0600, Richard Coffey wrote:
>>>> Hi all,
>>>> 
>>>> As of late, I've noticed problems with individual multicast addresses
>>>> working. The beaconserver's address seems to indicate that we cannot send,
>>>> yet I've gone into the test room and successfully collaborated. Also,
>> people
>>>> cannot see me in a particular room, but in other rooms they can, and vice
>>>> versa.
>>>> 
>>>> We're not running tight ACL's on our routers, so it's not that. Thoughts?
>>>> 
>>>> -Richard
>>>> 
>>>> --
>>>> Richard C., SCI Evangelist
>>>> SCI Institute
>>>> University of Utah
>>>> http://www.sci.utah.edu/
>>>> 801.918.5050
>>>> 801.585.6513 fax
>>> 
>>> ===
>>> Bill Nickless    http://www.mcs.anl.gov/people/nickless      +1 630 252
>> 7390
>>> PGP:0E 0F 16 80 C5 B1 69 52 E1 44 1A A5 0E 1B 74
>> F7     nickless at mcs.anl.gov
>>> 
>>> 
> 
> ===
> Bill Nickless    http://www.mcs.anl.gov/people/nickless      +1 630 252 7390
> PGP:0E 0F 16 80 C5 B1 69 52 E1 44 1A A5 0E 1B 74 F7     nickless at mcs.anl.gov
> 
>