Nsis_Imp August 2006

nsis_imp@informatik.uni-goettingen.de

8 participants
12 discussions

RE: [Nsis_imp] multiple gist and nslp instances on the same node
by Christian Dickmann 30 Aug '06

30 Aug '06

Hi, > Hello all! > > Perhaps it does not make sense this way, but I thought > about reducing the node count for some congestion > scenarios I'm currently working on. > > By running 2 separate instances of GIST and NSLP code, > each pair correctly doing their socket-API calls, > and having 2 NICs on the PC, can I fake multiple > nodes? > (For example, in RMD, 1 egress and 1 core running on > the same pc, associated with one NIC and IP address.) Can you give me a reason, why you want this, but not a virtual machine? I mean, in terms of any performance study, this kind of setup is not realistic anyway. I just ask out of curiosity. > Is there a working solution for running multiple (for > ex. 2) GIST instances on the same machine, to which > are attached separate NSLP instances correctly? No, there are several problems. The first one is the API to the NSLP as you noticed. NSLP and GIST communicate through a unix domain socket which has a fixed name, so the two running instances would collide. This can easily be fixed by compiling a second instance of NSIS which uses a different name, of course. The second issue is more complicated. It is about sockets. GIST needs to intercept packets with router alert option. For that, we open up a raw socket, that monitors any device for packets with RAO. You would have to chance this and I currently do not know how to do this, so I am not able to help with that. There might be more problems, but no one that directly comes into my mind. Sorry, that I can not provide more help. Christian Dickmann

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RE: [Nsis_imp] Implementation
by Christian Dickmann 30 Aug '06

30 Aug '06

Hi, > To use NSIS implementation I must use a real scenario (I mean > that I must run the NSIS damon as much computers as are the > nodes that are in my topology) or I can simulate it? The > use of the alias interfaces are supported by the implementation? > I can run, to simulate a scenario, different NSIS damons (based > on different nsis.conf) on the same machine? No, this is not possible. Personally, I use QEMU to emulate virtual PCs on my laptop. These virtual PCs can be connected to form an virtual network. This way, you can model your topology and run it as if you really had this number of machines. If you wish, I can provide you with a QEMU harddisk image, which you only need to copy as many times as you want to have virtual machines. In addition I have a sample starting script showing how to build the virtual network. Interested? > Moreover I would to know if there are new versions of the NSIS > implementation that interact with Mobile IP and that I can use. Not to my knowledge. Christian Dickmann

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multiple gist and nslp instances on the same node
by pfer 30 Aug '06

30 Aug '06

Hello all! Perhaps it does not make sense this way, but I thought about reducing the node count for some congestion scenarios I'm currently working on. By running 2 separate instances of GIST and NSLP code, each pair correctly doing their socket-API calls, and having 2 NICs on the PC, can I fake multiple nodes? (For example, in RMD, 1 egress and 1 core running on the same pc, associated with one NIC and IP address.) Is there a working solution for running multiple (for ex. 2) GIST instances on the same machine, to which are attached separate NSLP instances correctly? The problem is, I can't make my QoS-NSLP code register to different instances, they all hit one on the other side.I think this is a socket issue, but maybe it is hackable. Would this interfere with the way GIST does its connections and signaling? Just curious if I can cut my node count from 10 to 4, since qos filtering is on interface level, anyway :) I'm thinking of static IP configs here, no dynamic routing. Thanks in advance, Ferenc PS: virtualization is no option for me now __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Bug in Responder Statemaschine
by Christian Dickmann 29 Aug '06

29 Aug '06

Hi all, this mail is mainly a reminder for my self to fix the following bug: The ResponderFSM does not handle Queries in WaitConfirm. The problem: If a Response is lost, the Query is retransmitted, while the ResonderFSM might be still in WaitConfirm. Therefore, the Query is dropped and we handshake will fail when the Querying node gives up retransmitting. Solution: Handle Query in WaitConfirm, restart WaitConfirmTimer and send Response. As said, I will fix this bug and this mail is just a reminder. The Bug was found by Mayutan. Thanks. Christian Dickmann

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[PATCH] nsis-0.4.1-dev bugfixes
by Gotthard, Petr 24 Aug '06

24 Aug '06

Hello, first of all: many thanks for publishing the beta/development snapshots. It's great to have possbility to test the latest development version. I've identified several bugs in the latest development snapshot (Aug 23, 2006): - a bug in gist/exceptions/GistMessageParseException.cpp: missing header - two compilation errors on gcc 4.1.0: extra prefixes in gist/fsm/GistFsmBase.h and gist/message/GistErrorMessage.h - my own bug in nslp/nslp_api/NslpApi.cpp: getSockets() should not clean rfds, so FD_ZERO should be moved to waitForSignal() All the above mentioned bugs are fixed in the attached patch. If you agree, could you please apply it to your development tree? thanx and regards Petr

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New website launched
by Christian Dickmann 23 Aug '06

23 Aug '06

Hi all, we are proud to announce the launch of our new website. It features an new structure, which greatly eases finding information. In addition, it incorporates a FAQ page, that answers the most important questions about NSIS and our implementation (If you think, that the FAQ misses a question, please feel free to mail it to the mailing list). Furthermore, you will find all releases up to now, as well as recent development versions (currently 0.4.1-dev) and the ethereal dissector on the new website. Pages about tutorials and related projects complete the website. The new beta/development version page provides current snapshots of our implementation. This makes our work more transparent and you can see and test upcoming features before the next release is rolled out. We welcome everyone to try the development snapshots and comment on them, but also have to warn you, that you can expect bugs, inconsistencies or incomplete features. So, if you are in doubt which version fits your need, go to the download page and grab one of the stable releases. Comments are very welcome. Regards, Christian Dickmann

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Questions about QoS NSLP and QSPEC
by 이수용 23 Aug '06

23 Aug '06

Hi, I have some questions about the QoS NSLP implementation. 1. The current QoSServer can have only one QoSFSM at one time, but can this deal with multiple QoS-NSLP sessions which starting from different QNIs? If it's possible, how can the only FSM in QoSServer deal with the sessions associated with it's states? 2. As I know, the flows managed by NSIS protocol should be associated with linux traffic control (tc). How can I map the QSPEC managed by QoS NSLP into the Linux tc (cbq)? -- Best Regards, Sooyong Lee

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Sending and receiving real data over the QoSNSLP
by 이수용 11 Aug '06

11 Aug '06

Hi, I'm trying to combine VLC with the given NSIS implementation. However, I'm wondering how to send or receive real video data using the installed signaling path. I think, there are no parts of APIs for real data communication (only for signaling messages) in the current implementation. If there are any parts related to my concern, please let me know. -- Best Regards, Sooyong Lee

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RE: [Nsis_imp] Patch: Updated automake to install libnslp.a andrelevant headers
by Christian Dickmann 08 Aug '06

08 Aug '06

Hi, I added the patch to our development tree. Christian Dickmann ________________________________ From: nsis_imp-bounces(a)informatik.uni-goettingen.de [mailto:nsis_imp-bounces@informatik.uni-goettingen.de] On Behalf Of Gotthard, Petr Sent: Tuesday, August 08, 2006 1:43 PM To: nsis_imp(a)informatik.uni-goettingen.de Subject: [Nsis_imp] Patch: Updated automake to install libnslp.a andrelevant headers Hello, I've updated automake scripts to install libNslp.a and relevant headers during "make install". This should simplify integration of GIST with another NSLP's, that are no longer required to reference headers inside nsis source distribution. If you agree, could you please apply it to your development tree? regards Petr diff -ru nsis-0.4.1-dev/Makefile.am nsis-0.4.1/Makefile.am --- nsis-0.4.1-dev/Makefile.am 2006-06-04 18:49:02.000000000 +0200 +++ nsis-0.4.1/Makefile.am 2006-08-08 13:04:00.522725000 +0200 @@ -1,5 +1,19 @@ AUTOMAKE_OPTIONS = 1.7 +nobase_pkginclude_HEADERS = \ + gist/message/headers.h \ + library/api_def.h \ + library/constants.h \ + library/GistException.h \ + library/HashTable.h \ + nslp/nslp_api/GenericNslpStateKey.h \ + nslp/nslp_api/GenericObject.h \ + nslp/nslp_api/NslpApi.h \ + nslp/nslp_api/NslpApiCallback.h \ + nslp/nslp_api/NslpApiServerPool.h \ + nslp/nslp_api/Timer.h \ + nslp/nslp_api/TimerCallback.h + EXTRA_DIST = \ manual/Configuration manual/Implementation manual/QoS \ manual/FreeBSD \ diff -ru nsis-0.4.1-dev/nslp/nslp_api/Makefile.am nsis-0.4.1/nslp/nslp_api/Makefile.am --- nsis-0.4.1-dev/nslp/nslp_api/Makefile.am 2006-05-30 19:53:55.000000000 +0200 +++ nsis-0.4.1/nslp/nslp_api/Makefile.am 2006-08-08 13:04:18.642824000 +0200 @@ -1,7 +1,7 @@ AUTOMAKE_OPTIONS = 1.7 -noinst_LIBRARIES = libNslp.a +lib_LIBRARIES = libNslp.a libNslp_a_SOURCES = \ Timer.cpp \

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Patch: Updated automake to install libnslp.a and relevant headers
by Gotthard, Petr 08 Aug '06

08 Aug '06

Hello, I've updated automake scripts to install libNslp.a and relevant headers during "make install". This should simplify integration of GIST with another NSLP's, that are no longer required to reference headers inside nsis source distribution. If you agree, could you please apply it to your development tree? regards Petr diff -ru nsis-0.4.1-dev/Makefile.am nsis-0.4.1/Makefile.am --- nsis-0.4.1-dev/Makefile.am 2006-06-04 18:49:02.000000000 +0200 +++ nsis-0.4.1/Makefile.am 2006-08-08 13:04:00.522725000 +0200 @@ -1,5 +1,19 @@ AUTOMAKE_OPTIONS = 1.7 +nobase_pkginclude_HEADERS = \ + gist/message/headers.h \ + library/api_def.h \ + library/constants.h \ + library/GistException.h \ + library/HashTable.h \ + nslp/nslp_api/GenericNslpStateKey.h \ + nslp/nslp_api/GenericObject.h \ + nslp/nslp_api/NslpApi.h \ + nslp/nslp_api/NslpApiCallback.h \ + nslp/nslp_api/NslpApiServerPool.h \ + nslp/nslp_api/Timer.h \ + nslp/nslp_api/TimerCallback.h + EXTRA_DIST = \ manual/Configuration manual/Implementation manual/QoS \ manual/FreeBSD \ diff -ru nsis-0.4.1-dev/nslp/nslp_api/Makefile.am nsis-0.4.1/nslp/nslp_api/Makefile.am --- nsis-0.4.1-dev/nslp/nslp_api/Makefile.am 2006-05-30 19:53:55.000000000 +0200 +++ nsis-0.4.1/nslp/nslp_api/Makefile.am 2006-08-08 13:04:18.642824000 +0200 @@ -1,7 +1,7 @@ AUTOMAKE_OPTIONS = 1.7 -noinst_LIBRARIES = libNslp.a +lib_LIBRARIES = libNslp.a libNslp_a_SOURCES = \ Timer.cpp \

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Nsis_Imp August 2006