[AG-TECH] bridge not in central registry
Fred Dech
fdech at uchicago.edu
Fri Mar 30 11:22:23 CDT 2007
It's useful to be able to tell remote sites to use your bridge, but you
are right, it won't always show up in their bridge list. It won't always
show up in Your bridge list. Sometimes my bridge won't make my client's
list even when the last bridge in the list is about a 10 second ping away..?
So increasing the number of bridges from the registry that will populate
your bridge list won't necessarily guarantee that your bridge (perhaps in
the same subnet) will make your list, let alone someone else's.
--fred
On Thu, Mar 29, 2007 at 09:44PM, Kaizaad Bilimorya said:
> Hello,
>
> We are running a bridge server that seems to drop out from the central
> registry http://www.accessgrid.org/registry/peers.txt
>
> Physically, the bridge doesn't seem to loose network connectivity, but
> when a client starts up and gets the list of bridges, sometimes our bridge
> is not there. After waiting a few minutes and then restarting the client,
> the bridge shows up in the list:
>
> Bridge Host Port Type Status Distance PortRange
> ------ ---- ---- ---- ----- -------- ----------
> SHARCNET agbs.sharcnet.ca 20000 QuickBridge Enabled 0.0160 50000-50200
>
>
> I can actually just run the "RegistryClient.py" command (from the bridge
> itself) and sometimes I see it listed but then on the next run it is gone.
>
> name: SHARCNET host: agbs.sharcnet.ca port: 20000 dist:0.0015721321106
> name: UofC host: bullet.uchicago.edu port: 20200 dist:0.0685670375824
> name: Argonne host: milton.mcs.anl.gov port: 8030 dist:0.0720429420471
> name: WestGrid host: venueserver2.westgrid.ca port: 20000
> dist:0.172122955322
> name: NIEeS host: agiraffe.niees.group.cam.ac.uk port: 29999
> dist:0.353329181671
> name: AGSC host: sam.ag.manchester.ac.uk port: 1992 dist:0.359209060669
> name: onlyfinland host: vy216.ucs.fi port: 20000 dist:0.452105998993
> name: APAG host: vv3.ap-accessgrid.org port: 20000 dist:0.751379966736
> name: JCU host: hpc-external.jcu.edu.au port: 20000 dist:0.772580862045
> name: Sheridan host: oa-ag3-venue.sheridanc.on.ca port: 20000 dist:8.37
>
>
> I think it is dropping out of the registry because I would expect it to be
> first in the list since it is the closest. Even when I increase the
> "LookupBridge(self, maxToReturn=20):" it still is not listed some of the
> time.
>
> Any insight would be helpful
>
> thanks
> -k
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