[AG-TECH] problem with multicast

[John Shalf]

It looks like a problem with PIM on your routers.  You get these 
cyclical failures that follow the update cycles that your routers go 
through in order to decide when to join a multicast group or prune 
traffic from a given multicast group.

Greg Bell had a detailed table of Cisco and Juniper IOS multicast bugs 
related to this kind of behavior, but I can't seem to find them 
anymore.  All I can find at the moment is his paper describing the 
mechanics of PIM problems like yours and the methods they used to 
identify/correct them at
	http://gravity.lbl.gov/grbell/docs/Multicast-ESCC.pdf

-john

On Jun 21, 2004, at 8:54 PM, Zeppy B. Vilan wrote:
> hello people,
>  
> i would like to ask your help regarding my multicast problem. i can 
> recieve and transmit using multicast in access grid lobby. but every 1 
> to 2 minutes i got freeze and after 1 to 2 minute it will back again? 
> anybody got experience like this before? i check my banwidth usage we 
> are not congested. we use 3 link connected to APAN. anybody can give 
> me a stable multicast configuration? thank you people for your help..
>  
> regards,
> zeppy
> ____________________________________________________________________
>  Philippine Research, Education and Government Information Network
>   "Fostering the Growth of Research & Development in the Philippines"
>                              www.pregi.net
>  
>
> Zeppy B. Vilan                                     PREGINET 
> Network-Multimedia Over Ip Group
> Science Research Specialist I               Phone: (+63 2) 426 9766/67
> Communications Engineering Division         Fax:   (+63 2) 426 9756
> Email: zeppy at asti.dost.gov.ph              E-mail: multimedia at pregi.net
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