[AG-TECH] BridgeServer trouble

Michael Braitmaier braitmaier at hlrs.de
Mon Nov 15 03:36:02 CST 2004

HEllo chris!

I am using a quite small port range with our bridgeserver here at our 
institute, only allowing a port range of 4 ports, which is exactly what is 
needed to bridge one room. For example:

#HLRS AG Room on ANL Server

Two ports are allocated for audio (in/out) and two ports are allocated for 
video (in/out).

Works quite stable.

Dipl.-Inf. Michael Braitmaier
HLRS - Visualization / Video Conferencing
University of Stuttgart
Website: http://www.hlrs.de/organization/vis/people/braitmaier/

----- Original Message ----- 
From: "Christoph Willing" <willing at itee.uq.edu.au>
To: "West Suhanic" <wsuhanic at alumni.uwaterloo.ca>
Cc: "Thomas D. Uram" <turam at mcs.anl.gov>; <ag-tech at mcs.anl.gov>
Sent: Sunday, November 14, 2004 11:04 PM
Subject: Re: [AG-TECH] BridgeServer trouble

On 14/11/2004, at 2:33 AM, West Suhanic wrote:

> Hi Thomas:
> I am running my own VenueServer. It is located at, 
> https://example1:8000/Servers/default
> In order to allow non-multicast enabled hosts access to the VenueServer I 
> am running a
> bridge server on example1. The configuration file for the BridgeServer is:
> [BridgeServer]
> name = CLR
> location = Toronto
> qbexec = /usr/bin/QuickBridge
> # Lobby of ag-2 server
> [https://example1:8000/Venues/default]
> type = Venue
> # use this special port range for this venue
> portMin = 24000
> portMax = 24006
> I can successfully connect to the VenueServer and select unicast. After 
> selecting
> unicast, a new rat and vic appear. However I never get any video or audio. 
> All of
> my multicast VenueClients are getting video and audio from the 
> VenueServer.
> Any suggestions as to what I am doing wrong?


Just as a test, try a configuration with a much greater range between
portMin & portMax e.g. portMin = 20000, portMax =30000.

I think there's something amiss with port number allocations when
min/max are so close. I previously tried a narrow range like yours (in
order to try to generate specific, repeatable port numbers), but it
didn't work as expected. Unfortunately I didn't have time to track down
the problem, so left it to the bridge service to select port numbers
from a wide range.


Christoph Willing                        Ph: +61 7 3365 8350
QPSF Access Grid Manager
University of Queensland

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