[AG-TECH] ANL Lobby bridge
Michael Braitmaier
braitmaier at hlrs.de
Tue Oct 12 08:58:20 CDT 2004
Hi Juli!
In case of unicast you have to open a port range of 4 ports to enable
unicast access to a unicast-multicast bridge.
The bridge itself should be located within a multicast network as far as I
know to be able to translate the unicast packages to multicast packages and
the other way round. We are running our own bridge and bridgeing our own
Venue at the ANL-server in a multicast network. So if you like you could
test with this one for the beginning to see if all other things work fine so
far ( maybe we could meet in the room at a specific date, so you see someone
in the room).
Still, to be able to use the multicast-unicast bridge for our room, you have
to open ports 50096-50099 in your firewall. This port range is specific to
our room and changes with every other room you join. You can get the ports
and ip-addresses for a couple of rooms from the attachment I sent in the
previous e-mail.
To finally enable bridging, you just connect with the client to the server.
Once connected go to the menu "Preferences->Use unicast" and select that
menu entry. A dialog appears showing you a mc-uc-bridge labeled something
with "University of Stuttgart". Select that one and you should be able to
participate in the room as if you would use multicast. However this is only
valid for our room on on the ANL server so far.
To test it, connect to:
https://vv2.mcs.anl.gov:9000/Venues/000000f5569d3f0a008c00dd000b003761b
Then once connected perform the above tasks to enable the unicast bridge.
Michael
------------------
Dipl.-Inf. Michael Braitmaier
HLRS - Visualization / Video Conferencing
University of Stuttgart
Germany
Website: http://www.hlrs.de/organization/vis/people/braitmaier/
----- Original Message -----
From: "Julia Shiela Mullen" <jsm at WPI.EDU>
To: "Michael Braitmaier" <braitmaier at hlrs.de>
Cc: "ORNELAS, GILBERT (JSC-DV3) (STU)" <gilbert.ornelas1 at jsc.nasa.gov>
Sent: Tuesday, October 12, 2004 3:27 PM
Subject: Re: [AG-TECH] ANL Lobby bridge
>
> Hi Gilbert -
>
> We have tried using personal nodes from NASA sites - Goddard and
> Glenn, and in each case ran into firewall issues. We were running
> a unicast bridge in our venue (Worcester Polytechnic Institute) to
> overcome the fact that NASA does not have multicast enabled. What
> we found was that we were able to see and our student at NASA, but
> he could only hear us, not see us. So, it appears that some part
> of the firewall blocks the video.
>
> I would be happy to work with you in testing and the like to
> resolve this issue as we would like to use personal nodes to communicate
> with students who are working on projects at NASA. I believe that
> part of the issue is that the Networking folks, for security reasons,
> do not want to open the ports. If we could find a way to open a
> very narrow range and work with those, this could be a workable
> solution.
>
> Let me know if you want to test with me at any time. In addition, if
> you can help me with the protocol/paperwork to get personal nodes
> functional at NASA sites, that would be tremendous.
>
> Thanks,
>
> Julie
>
>
> ------------------------------------------
> Julia S. Mullen, Ph.D
> Academic Computing Application Scientist
> Computing and Communications Center
> Worcester Polytechnic Institute
> Worcester, MA
> phone: 508.831.6054
> fax: 508.831.5680
> email: jsm at wpi.edu
>
>
>
> On Tue, 12 Oct 2004, Michael Braitmaier wrote:
>
>> Hi Gilbert!
>>
>> ----- Original Message -----
>> From: "ORNELAS, GILBERT (JSC-DV3) (STU)" <gilbert.ornelas1 at jsc.nasa.gov>
>> To: "'Michael Braitmaier'" <braitmaier at hlrs.de>
>> Sent: Monday, October 11, 2004 6:17 PM
>> Subject: RE: [AG-TECH] ANL Lobby bridge
>>
>>
>> > Hi Michael,
>> >
>> > Thanks for your quick reply. Excuse me if my questions are a bit too
>> > simple,
>> > I am fairly new to the Access Grid community and I am just trying to
>> > get
>> > going:
>> >
>> > I am trying to install a PIG at my office computer. I successfully
>> > installed it already
>> > on my laptop, but in my office I've had no such luck. From what I've
>> > been
>> > reading, my problem is
>> > that I am behind a firewall at work and ports need to be opened.
>> > Before I
>> > go to the network people,
>> > I want to be sure what is it exactly that I need to ask them for, which
>> > I
>> > don't know yet. Maybe just
>> > "I need a port open that will enable me to do multicasting?".
>>
>> Unfortunately I can't help you with this , as our multicast network is
>> completely open.
>> So I didn't had to bother any fw admin.
>>
>> >
>> > Anyway. I am not sure I'm on the same page as you. Ex. I can't even
>> > connect to a venue from
>> > my AG-VenueClient and my AG-VenueClient does not show the File menu
>> > that
>> > you
>> > mention.
>>
>> My mistake, it is labeled Venue. I attached a screen shoot where to find
>> the
>> properties for AGT 2.3.
>> Besides I would advise you to use AGT 2.3 as there are a lot of bugfixes
>> since 2.1.2.
>> Especially when you use it under windows it is easy to install. Remove
>> previous versions first.
>>
>> > Also, I don't
>> > Think I have a QuickBridge application, and thus the vv.dat file you
>> > talked
>> > about. Is this something
>> > I need for my PIG to work? Here is a little history of what I've done:
>> >
>>
>> I attached that file to this e-mail.
>>
>> > 1. install the software (activeSate Python 2.2,
>> > wxPython-2.4.0, AG 2.1.2)
>> > 2. request certificate
>> > 3. import certificate ("Preferences" => "Manage
>> > Certificates" => "View Pending Certificates" )
>> > 3. run Venue Client (thanks for clarifying that the
>> > pass
>> > phrase was just the password)
>> > 4. configure the venue client and stored
>> > configuration
>> > (here, I did not add the
>> > VideoProducerService since I don't have a camera yet. I
>> > only left the AudioService and
>> > the
>> > VideoConsumerService enabled)
>> > 5. type
>> > https://hobbes.mcs.anl.gov:9000/Venues/default
>> > and click on go, but then I get the message
>> > window "Can not enter venue" about not being able
>> > to connect.
>>
>> Maybe try the following url first. This works most of the time for me:
>> https://vv2.mcs.anl.gov:9000/Venues/default
>>
>> The new server should work too, but most ppl are still on the old one.
>> Find
>> the new one at:
>> https://watts.mcs.anl.gov:9000/Venues/default
>>
>>
>> >
>> > Once again thanks for helping me out. I'll try to work it out. Won't
>> > keep
>> > bothering you with questions
>> > after this.
>>
>> No problem, you are welcome.
>>
>> >
>> > Gilbert
>> >
>> >
>> >
>>
>> Michael
>>
>> ------------------
>> Dipl.-Inf. Michael Braitmaier
>> HLRS - Visualization / Video Conferencing
>> University of Stuttgart
>> Germany
>> Website: http://www.hlrs.de/organization/vis/people/braitmaier/
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> > -----Original Message-----
>> > From: Michael Braitmaier [mailto:braitmaier at hlrs.de]
>> > Sent: Monday, October 11, 2004 10:08 AM
>> > To: ORNELAS, GILBERT (JSC-DV3) (STU)
>> > Cc: ag-tech at mcs.anl.gov
>> > Subject: Re: [AG-TECH] ANL Lobby bridge
>> >
>> >
>> > Hi Gilbert!
>> >
>> > Basically you can just connect to the room you want the mc-address and
>> > ports
>> >
>> > from and once the AG-VenueClient connected you can view the address and
>> > ports by opening the venue properties in File->Properties
>> > This gives you the data for the mc-address for the room. The unicast
>> > port
>> > mapping to these multicast ports are bridge dependent and can be
>> > configured
>> > by the one running the bridge through the config file of the
>> > QuickBridge
>> > application. In our case we bridge our own room by mapping mc-ports
>> > 59922-59926 to the unicast ports 50096-50099. But as said, the unicast
>> > ports
>> >
>> > are a matter of configuration of the bridge.
>> > In generall I realized that it is helpful to open ports above 50000 up
>> > to
>> > 53000 (with some exceptions). This is the range where most unicast
>> > ports
>> > for
>> >
>> > multicast mapping are used. You should be able to also find that
>> > information
>> >
>> > in a file called vv.dat which accompanies the QuickBridge application
>> > used
>> > by the BridgeServer of AccessGrid.
>> >
>> > Hope this helps
>> > Michael
>> >
>> >
>> >
>> > ----- Original Message -----
>> > From: "ORNELAS, GILBERT (JSC-DV3) (STU)"
>> > <gilbert.ornelas1 at jsc.nasa.gov>
>> > To: "'Michael Braitmaier'" <braitmaier at hlrs.de>
>> > Sent: Monday, October 11, 2004 4:40 PM
>> > Subject: RE: [AG-TECH] ANL Lobby bridge
>> >
>> >
>> >> Hi Michael,
>> >>
>> >> I have a quick question. I am also having firewall problems and I
>> >> need to talk to the admins so that they can open the appropriate
>> >> ports. My question is this: what are those appropriate ports or how do
>> >> I find out what
>> >> they are? Do I just ask them that I need them to open the appropriate
>> >> unicast-multicast ports or what?
>> >>
>> >> Thanks. Hope my question was not too broad or anything like that.
>> >>
>> >> Gilbert
>> >>
>> >>
>> >> -----Original Message-----
>> >> From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov] On
>> >> Behalf
>> >> Of Michael Braitmaier
>> >> Sent: Monday, October 11, 2004 4:24 AM
>> >> To: ag-tech at mcs.anl.gov; jeremy at biochem.uthscsa.edu
>> >> Subject: Re: [AG-TECH] ANL Lobby bridge
>> >>
>> >>
>> >> Indeed we run a bridge for the ANL lobby unfortunately changes in our
>> >> firewall configuration has locked the ports used for unicast-multicast
>> >> mapping. We will take it down for the moment and see wether we can
>> >> convince our fw admins to open the appropriate ports.
>> >>
>> >> Michael
>> >>
>> >> ------------------
>> >> Dipl.-Inf. Michael Braitmaier
>> >> HLRS - Visualization / Video Conferencing
>> >> University of Stuttgart
>> >> Germany
>> >> Website: http://www.hlrs.de/organization/vis/people/braitmaier/
>> >>
>> >>
>> >>
>> >> ----- Original Message -----
>> >> From: "Jeremy Mann" <jeremy at biochem.uthscsa.edu>
>> >> To: <judson at mcs.anl.gov>
>> >> Cc: <ag-tech at mcs.anl.gov>
>> >> Sent: Friday, October 08, 2004 4:25 PM
>> >> Subject: RE: [AG-TECH] ANL Lobby bridge
>> >>
>> >>
>> >>
>> >> Ivan R. Judson said:
>> >>>
>> >>> We don't bridge the lobby.
>> >>
>> >> Oh, ok, that explains it. Thanks!
>> >>
>> >> BTW, using the AG from home (RoadRunner cable) actually worked! But
>> >> the major disadvantage is the bandwidth. Has anybody considered
>> >> modifiying RAT for a greater compression codec?
>> >>
>> >>
>> >> --
>> >> Jeremy Mann
>> >> jeremy at biochem.uthscsa.edu
>> >>
>> >> University of Texas Health Science Center
>> >> Bioinformatics Core Facility http://www.bioinformatics.uthscsa.edu
>> >> Phone: (210) 567-2672
>>
>
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