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
