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 J
============================================
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.Rowley@manchester.ac.uk
From: Jinshung Liu
[mailto:jsliu@nchu.edu.tw]
Sent: 23 December 2004 01:07
To: Andrew Rowley
Cc: ag-tech@mcs.anl.gov
Subject: Re: [AG-TECH] Bridge
server with 2 interface cards
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 ?
-----
Original Message -----
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 J
============================================
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.Rowley@manchester.ac.uk
From:
owner-ag-tech@mcs.anl.gov [mailto:owner-ag-tech@mcs.anl.gov] On Behalf Of Jinshung Liu
Sent: 22 December 2004 03:18
To: ag-tech@mcs.anl.gov
Subject: [AG-TECH] Bridge server
with 2 interface cards
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 ?
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