Hi, We currently restart our bridge server overnight to make sure that it is working each morning. Unfortunately, this means that the bridges for a venue change port numbers every day. It would be really useful if the bridge server stored the port numbers used for each venue in a file as the bridge is started, and then reuses these if possible on the next run of the bridge server. This would mean that people may not need to open a whole range of ports just to use one venue, and I don't need to add a section in my bridge config for every venue (there are quite a few).
Even better than this would be to use something like a static bridge (see http://www.agsc.ja.net/services/staticbridge.php) which uses a fixed 4 ports regardless of the number of users or venues (although it does require each user to tell it where they want to send their traffic to). Andrew :) ============================================ Access Grid Support Centre, RSS Group, Manchester Computing, Kilburn Building, University of Manchester, Oxford Road, Manchester, M13 9PL, UK Tel: +44(0)161-275 0685 Email: [email protected] > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Thomas D. Uram > Sent: 24 April 2006 17:41 > To: Todd Zimmerman > Cc: [email protected] > Subject: Re: [AG-TECH] Bridge server > > > Given the importance/need for many of us to statically assign bridge > ports, > will this functionality > > be available in AG3? > > Can you elaborate this point more? What is currently in AG3 is this: > > - A Bridge can be run with a particular port range specified. The person > running the > bridge will have to ensure that these ports are open for udp through their > firewall. > > - A user will see which bridges are available, and can view the hostname > and port > range used by each. The user can then decide which bridges to use, and > pass > this information to a network > admin to open ports accordingly. > > Questions this leaves open: > > - What should the default port range for a bridge be? How about 50000- > 50200? This > would ensure that bridges will, by default, all use the same (relatively) > narrow port range. > > - Is this sufficient for your local networking needs? There may be > something > additional > implied by 'statically assign bridge ports', and I'd like it to be > explicit so > I can address it. > > Tom > > > > On 4/19/06 11:44 AM, Todd Zimmerman wrote: > > Agreed. We've been bridging our entire venueserver for years. We only > run into issues when we > > overlap venueserver and venue configs. > > > > Given the importance/need for many of us to statically assign bridge > ports, will this functionality > > be available in AG3? > > > > Todd > > > > Thomas D. Uram wrote: > >> Bridging an entire venue server is supported just fine in my > experience. > >> There may be problems if the config specifies an overlapping set by, > >> say, specifying a venue server and individual venues on that server; > >> these should be regarded as mutually exclusive options and, I think, > >> in most practical situations, they are. > >> > >> Tom > >> > >> > >> On 4/19/06 9:33 AM, Michael Braitmaier wrote: > >>> Jeremy Mann schrieb: > >>> > >>>> So basically I have to manually bridge each room. In my config file I > >>>> tried to set the entire VenueServer to only use a range of ports, > then I > >>>> entered ports for the rooms I wanted to configure statically. But I > >>>> still > >>>> came across that "Address already in use" problem. > >>>> > >>>> For example, I have the VenueServer set to 5000-5200 and 4 Venues to > >>>> 5202 > >>>> on up. > >>>> > >>>> > >>> I don't specifiy the ports for the venue server overall. Beside I > >>> think bridging a whole venue server is not that well supported. > >>> You have to specify the ports for each venue seperately. If you refer > >>> to the ports of the VenueServer itself, these are configured through > >>> the VenueServer > >>> configuration. As fas I know through the VenueServer.cfg file, but I > >>> didn't succeed in configuring it yet. > >>> > >>> Michael > >>> > >>>> Michael Braitmaier said: > >>>> > >>>> > >>>>> I am doing basically the same. I restrict the range of the ports for > >>>>> unicast for a specific venue. > >>>>> > >>>>> Config-File example: > >>>>> > >>>>> [https://rusagvideo.rus.uni- > stuttgart.de:8000/Venues/000001026deebc1400c0006c00230006555] > >>>>> > >>>>> type=Venue > >>>>> portMin=50096 > >>>>> portMax=50099 > >>>>> > >>>>> One of the problems rising with this configuration method is that > >>>>> normally AG selects ports on a random > >>>>> pattern put of the range you specified in the config file. > >>>>> Ports for rat and vic are allocated sequentially. > >>>>> So first rat gets assigned 50096 for example. > >>>>> When the port for vic should be determined, it can happen due to > the > >>>>> nature of the random allocation > >>>>> that for vic also 50096 is initially selected. This of course leads > >>>>> to a > >>>>> "Address already in use" error. > >>>>> I avoided the problem by patching the AccessGrid files responsible > for > >>>>> port allocation to keep a list > >>>>> of ports which are in use and have the allocation algorithm first > check > >>>>> if a port the algorithm wants to allocate > >>>>> isn't in use yet. > >>>>> Otherwise you have to restart the bridge server until you don't get > the > >>>>> "address already in use" error to be sure you really have > >>>>> video and audio correctly bridged. > >>>>> > >>>>> Michael > >>>>> > >>>>> > >>>>> Jeremy Mann schrieb: > >>>>> > >>>>> > >>>>>> Thomas D. Uram said: > >>>>>> > >>>>>> > >>>>>> > >>>>>>> Which version of AG software are you using for BridgeServer and > >>>>>>> VenueServer? > >>>>>>> Can you post your full bridge cfg file? > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>> AG 2.4. Attached is the config file. Worth noted is that I no > >>>>>> longer get > >>>>>> those python errors, however, now when I start it, several of the > >>>>>> venues > >>>>>> aren't bridged because the bridgeserver says the address is already > in > >>>>>> use > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>> -- > >>>>> ------------------ > >>>>> Dipl.-Inf. Michael Braitmaier > >>>>> HLRS - Visualization / Video Conferencing > >>>>> University of Stuttgart > >>>>> Germany > >>>>> Phone: ++49 711 685 5996 > >>>>> Fax : ++49 711 682 357 > >>>>> Website: http://www.hlrs.de/people/braitmaier/ > >>>>> > >>>>> > >>>> > >>>> > >>>> > >>> > > > > >
