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<DIV>Hi,</DIV>
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<DIV>Does anyone in the AG community have any experience with running an Access Grid node on the Defense Research Engineering Network (DREN) in unicast mode? DREN seems to block a lot of ports even though it peers with other networks. </DIV>
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<DIV> I have 3 AG nodes, 2 connected to Internet 2 and 1 connected to DREN and the DREN node only works some of the time. I am running in unicast mode and I believe DREN blocks port 20000 which is the default port for the bridge servers. If this is the case it prevents me from using most of the available bridges since they tend to use 20000?. I was wondering if that is why the Argonne bridge uses port 8030? I was also wondering when the bridge list is built how does it determine the closest bridge? I consistently show the AGSC bridge, using port 1992 as being the closest to my AG DREN node in West Virginia which is odd since AGSC is in England I believe. However when I can get the node to work it is usually through the AGSC bridge, sometimes using Argonne but not consistently. </DIV>
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<DIV>I have also tried running in debug mode but for some reason no log files are being generated even though they are set to debug mode and point to a directory (Windows XP is my platform). However I could capture the following from the debug window on a session that didn't work:</DIV>
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<DIV>06/29/09 14:33:52 3332 JabberClient jabberclient.py:151 DEBUG national-archi<BR>ves-and-records-administration-(nara)(<A href="mailto:vv3.mcs.anl.@conference.mcs.anl.go">vv3.mcs.anl.@conference.mcs.anl.go</A>: This r<BR>oom supports the MUC protocol.<BR>06/29/09 14:33:52 3332 JabberClient jabberclient.py:151 DEBUG national-archi<BR>ves-and-records-administration-(nara)(<A href="mailto:vv3.mcs.anl.@conference.mcs.anl.go">vv3.mcs.anl.@conference.mcs.anl.go</A>: NARA -<BR> West Virginia has joined this session<BR>06/29/09 14:34:25 3640 VenueClient venueclient.py:593 DEBUG Calling Heartbea<BR>t, time now: 1246300465<BR>06/29/09 14:34:25 3640 VenueClient venueclient.py:617 DEBUG Next Heartbeat n<BR>eeded within 36s<BR>06/29/09 14:34:25 3640 VenueClient venueclient.py:627 DEBUG heartBeatCounter<BR> = 2<BR>06/29/09 14:35:01 3456 VenueClient venueclient.py:593 DEBUG Calling Heartbeat, time now: 1246300501<BR>06/29/09 14:35:04 3456 VenueClient venueclient.py:617 DEBUG Next Heartbeat needed within 36s<BR>06/29/09 14:35:04 3456 VenueClient venueclient.py:627 DEBUG heartBeatCounter = 3<BR>06/29/09 14:35:38 3332 bajjer.io io.py:167 DEBUG RECV:</DIV>
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<DIV>06/29/09 14:35:40 3956 VenueClient venueclient.py:593 DEBUG Calling Heartbeat, time now: 1246300540<BR>06/29/09 14:35:40 3956 VenueClient venueclient.py:617 DEBUG Next Heartbeat needed within 36s<BR>06/29/09 14:35:40 3956 VenueClient venueclient.py:627 DEBUG heartBeatCounter = 4<BR>06/29/09 14:36:16 3908 VenueClient venueclient.py:593 DEBUG Calling Heartbeat, time now: 1246300576<BR>06/29/09 14:36:17 3908 VenueClient venueclient.py:617 DEBUG Next Heartbeat needed within 36s<BR>06/29/09 14:36:17 3908 VenueClient venueclient.py:627 DEBUG heartBeatCounter = 5<BR>06/29/09 14:36:39 3332 bajjer.io io.py:167 DEBUG RECV:</DIV>
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<DIV>06/29/09 14:36:53 3292 VenueClient venueclient.py:593 DEBUG Calling Heartbeat, time now: 1246300613<BR>06/29/09 14:36:53 3292 VenueClient venueclient.py:617 DEBUG Next Heartbeat needed within 36s<BR>06/29/09 14:36:53 3292 VenueClient venueclient.py:627 DEBUG heartBeatCounter = 6<BR>06/29/09 14:37:29 3372 VenueClient venueclient.py:593 DEBUG Calling Heartbeat, time now: 1246300649<BR>06/29/09 14:37:29 3372 VenueClient venueclient.py:617 DEBUG Next Heartbeat needed within 36s<BR>06/29/09 14:37:29 3372 VenueClient venueclient.py:627 DEBUG heartBeatCounter = 7<BR>06/29/09 14:37:41 3332 bajjer.io io.py:167 DEBUG RECV:</DIV>
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<DIV>06/29/09 14:38:05 3816 VenueClient venueclient.py:593 DEBUG Calling Heartbeat, time now: 1246300685<BR>06/29/09 14:38:05 3816 VenueClient venueclient.py:617 DEBUG Next Heartbeat needed within 36s<BR>06/29/09 14:38:05 3816 VenueClient venueclient.py:627 DEBUG heartBeatCounter = 8<BR>06/29/09 14:38:41 2636 VenueClient venueclient.py:593 DEBUG Calling Heartbeat, time now: 1246300721<BR>06/29/09 14:38:41 2636 VenueClient venueclient.py:617 DEBUG Next Heartbeat needed within 36s<BR>06/29/09 14:38:41 2636 VenueClient venueclient.py:627 DEBUG heartBeatCounter = 9<BR>06/29/09 14:38:42 3332 bajjer.io io.py:167 DEBUG RECV:<BR></DIV>
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<DIV>Is there any documentation that explains how the process works of connecting to a bridge server? I can see the various handshakes and then eventually joining an IGMP group and then you see the UDP video traffic (from a good session using windump).</DIV>
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<DIV>I should also note that this is not a new problem. Running the AG node in WV on DREN has never worked consistently since the install but we are to the point where we would really like to use it to connect to other nodes and I would like to see if I can get this solved. I am unable to have multicast enabled on this router for various reasons unfortunately so I'm stuck with getting it to work via unicast</DIV>
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<DIV>Thanks for insight anyone might have.</DIV>
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<DIV>Rick Lopez</DIV>
<DIV>National Archives (NARA)</DIV>
<DIV>College Park,MD</DIV></DIV>
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