Hi,
So far as I know, it is up to the user to choose which bridge server they use, and the default (i.e first in the list) bridge server displayed does not vary amongst clients. I am unsure if there are plans to make this change - I suppose randomizing the ordering in the list would do this. 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: andrew.row...@manchester.ac.uk _____ From: Jinshung Liu [mailto:l...@tcrc.edu.tw] Sent: 12 January 2005 01:08 To: Andrew Rowley Cc: ag-t...@mcs.anl.gov Subject: Re: [AG-TECH] Bridge server with 2 interface cards Hi, Andrew Thanks for your comment , you are right about the design of bridge server. We quit testing bridge server with 2 interface cards not only the way that bridge server behaves, but the connection between venue server and bridge server on 2 interface cards is awkard. By the way, I would like to discuss another bridging design, and be glad to share your opinion. We have done tests on one venue serving by a couple of bridge servers, and won't work as expected(we would like to see if the unicast connections could be load shared). We built a couple of bridge servers and configured them to serve a particular venue, so once you choose unicast service, a list of bridge server would be shown for selection, though some users selected the different bridges, the users were directed to some particular one. I know that many venues could be served by just one bridge server, do you think that AG team member have any intention to enchance load sharing features as I mentioned above? Jinshung ----- Original Message ----- From: Andrew Rowley<mailto:andrew.row...@manchester.ac.uk> To: 'Jinshung Liu'<mailto:js...@nchu.edu.tw> Cc: ag-t...@mcs.anl.gov<mailto:ag-t...@mcs.anl.gov> Sent: Wednesday, January 05, 2005 6:15 PM Subject: RE: [AG-TECH] Bridge server with 2 interface cards Hi, Sorry, I misunderstood what was happening here. What could be happening is that the bridge server is listening to multicast on the network that does not have multicast enabled. I am not sure how you would go about doing this, but you need the unicast part of the bridge server to listen on one network card and the multicast part to listen on the other network card. So far as I know, the current bridge server (Quickbridge) only listens on one network card (which this is I am uncertain). I expect that if you use the multicast card by default, this might work. Otherwise, it will probably require a modification of the source code of quickbridge to allow the choosing of a different network card for the multicast and unicast sockets. 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: andrew.row...@manchester.ac.uk _____ From: Jinshung Liu [mailto:js...@nchu.edu.tw] Sent: 23 December 2004 01:07 To: Andrew Rowley Cc: ag-t...@mcs.anl.gov Subject: Re: [AG-TECH] Bridge server with 2 interface cards Andrew, Thanks very much for your help, but I have another question, a reason that I set up 2 cards. We have 2 big networks, one is multicast enabled and the other is not, they are not interconnected. But some users could access both networks, some users can only access the network that is not multicast enabled. So these 2 interface cards on Bridge server were designed to help connectting those 2 domain users. Could you see any resolution ? Jinshung ----- Original Message ----- From: Andrew Rowley<mailto:andrew.row...@manchester.ac.uk> To: 'Jinshung Liu'<mailto:l...@tcrc.edu.tw> ; ag-t...@mcs.anl.gov<mailto:ag-t...@mcs.anl.gov> Sent: Wednesday, December 22, 2004 6:27 PM Subject: RE: [AG-TECH] Bridge server with 2 interface cards Hi, Often Multicast sockets are set up to "not loopback". This means that any traffic sent from the local computer is not received at the local computer again. This is typically true of bridges. I do not think that you need to set up two separate cards to listen in to multicast and unicast at the same time. You can only set up one unicast socket listening on a particular port, but you can usually set up any number of multicast sockets listening on the same port as the unicast socket. Hope this helps, Andrew G D Rowley :) ============================================ 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: andrew.row...@manchester.ac.uk _____ From: owner-ag-t...@mcs.anl.gov [mailto:owner-ag-t...@mcs.anl.gov] On Behalf Of Jinshung Liu Sent: 22 December 2004 03:18 To: ag-t...@mcs.anl.gov Subject: [AG-TECH] Bridge server with 2 interface cards Hi We were trying to build a better AG connection topology, so we intalled 2 network interface cards, where one sits in multicast network domain and the other in unicast network domain. But it didn't seem to work, the AG clients from multicast domain can't join with the AG clients from unicast domain ( the clients using bridge server). Could you give any suggestion ? Jinshung Liu
