April 2004 - ixp1200 - lists.cs.princeton.edu

Deep Packet Inspection using IXP1200 simulator.
by Denis Lyons 13 Apr '04

13 Apr '04

Hi, I am a masters student who is just starting work with the IXP1200 simulator. I am interested in performing deep packet inspection using the simulator (v2.0) and analysing the perfromance. Is there any code available for implementing deep packet inspection on the IXP1200 simulator?? Any help or advice will be greatly appreciated. Thanks in advance, Denis Lyons Department of Informatics and Electronics University of Limerick Limerick Ireland.

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IXP1200's publicly available in Emulab
by Jay Lepreau 09 Apr '04

09 Apr '04

I am pleased to announce the Utah Emulab testbed's integrated and documented support for IXP1200's. Currently we have 8 cards installed; all are publicly available to anyone with a valid research, educational, or development use, by signing up at www.emulab.net. http://www.emulab.net/tutorial/docwrapper.php3?docname=ixp.html Similar to other Emulab resources, an IXP1200 node can be allocated through an 'ns' script or through the Netbuild GUI. It can be configured as part of an arbitrary topology (of PCs, IXPs, or other node types), with end-nodes, traffic generators, routers, links, etc. Through NFS it has access to /proj and your Emulab home directory. You can configure a command to run automatically upon bootup. You have full access to the serial consoles of both the IXP and its host PC, which you can power cycle and of course reboot. All that makes it easy to allocate, experiment with, and evaluate an IXP-based application. Right now we have 8 ENP2505 (Bridalveil) cards installed, with Intel SDK 2.01 software. We hope to incorporate more IXP1200 nodes as we make space in our machine room, and also IXP2400 cards as development resources permit. Many thanks go to Intel for helping to support this work, to NSF of course, to the Emulab crew who helped develop it, and most especially to our former student Abhijeet Joglekar, who became our IXP expert.... and is now working at Intel. Jay Lepreau University of Utah

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plugging an IXP1200 eval board into a regular PC causes infinite reboot
by wdebruij＠dds.nl 07 Apr '04

07 Apr '04

Hi all, to be able to use the evaluation boards on a regular basis I would like to move them onto a regular (active) PCI backplane. From the VERA project documentation I've gotten quite useful information, and from the georgia tech PCI drivers for the ENP I've managed to write to the card over PCI just fine. However, I'm experiencing a strange problem that I hope someone has seen before: when I plug in the board it keeps resetting itself. This appears to be related to the BootMgr software, as it nicely waits for user input when I enter its menu by pressing space. Running cygmon or the diagnostics will immediately reset the board, though. I'm using the netwinder flash with cygmon on a B0 board, by the way. at first I thought that it might have to do with receiving a possible interrupt from the backplane, but having tried all interrupt lines (and none at all), this does not appear to be the problem. Does this problem sound familiar to anyone? On a related note: we're trying to get the eval boards working as ENP boards, ie booting linux over PCI. So far I've managed to write drivers for directly accessing the onboard pci from the host in kernelspace and through mmmap in userspace. In case anyone's interested, the sources can be found in CVS on ffpf.sourceforge.net . As soon as I've worked out the last bugs I'll supply a regular distribution.

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Doubt reg. sending data streams to IXP1200 ports
by sharmila radhakrishnan 07 Apr '04

07 Apr '04

Hello all, I have a doubt.I tried sending data to the IXP1200 physical port using 'ping' command.But I was not able to read the data from the port.Can you'll help me out with this.It is very urgent please. Thanx in advance, Sharmila Win an evening with the Indian cricket captain: Yahoo! India Promos.

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Re: Doubt reg. sending data streams to IXP1200 ports
by sharmila radhakrishnan 07 Apr '04

07 Apr '04

Hello Win an evening with the Indian cricket captain: Yahoo! India Promos.

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Re: Doubt reg. sending data streams to IXP1200 ports
by sharmila radhakrishnan 07 Apr '04

07 Apr '04

Hello Win an evening with the Indian cricket captain: Yahoo! India Promos.

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Deep packet inspection using IXP1200 simulator
by Denis Lyons 05 Apr '04

05 Apr '04

> Hi, > > I am a masters student who is just starting work with the IXP1200 > simulator. > I am interested in performing deep packet inspection using the simulator > and > analysing the perfromance. Is there any code available for implementing > deep packet inspection on the IXP1200 simulator?? > > Any help or advice will be greatly appreciated. > > Cheers, > > Denis.

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RE: [ixp1200] Transmitting pkts out of Giga ports
by Kunze, Aaron 02 Apr '04

02 Apr '04

Chompi, I think I can answer some of these questions for you. I believe your intuition is correct and the transmit code is not filling the MAC buffers fast enough. The transmit code for this chapter was not tested on the gigabit ports, so it's no surprise that the code is not fast enough. However, the IXF1002 has a 2048 byte buffer per port. So, you should be able to send Ethernet packets of that size or less without underflowing. The trick is to set the "tx send threshold" to something large. This threshold is the number of bytes that must be in the buffer before the MAC starts transmitting. If this threshold is set large enough, you should never underflow. This setting can be adjusted in the simulator, and it can also be adjusted on the hardware using the IXF1002 driver. If you are on Linux, this is done from user space via IOCTLs. If you are on VxWorks, this is done through function calls. There are also two known bugs in the transmit code that we are trying to put up on the errata web page. This may be impacting your ability to run the code on the hardware. I have pasted the errata below. It should be up on the website soon. For your last question, unfortunately, I couldn't find any microC code for transmitting on gigabit ports, but that doesn't mean it doesn't exist. Maybe someone else on the list has something like that. Aaron Errata: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Page: N/A Location: CD-ROM, Chapter09\transmit.c Description: The transmit code supplied in Chapter 9 does not properly handle packets larger than 64 bytes. There are two corrections: First, lines 169 and 170 should read: port_state.current_data_ptr = (void*)((unsigned int)(port_state.current_data_ptr) + (64 / sizeof(long long))); instead of: port_state.current_data_ptr = (void*)((unsigned int)(port_state.current_data_ptr) + 64); This correction accounts for the quad-word addressing of SDRAM on the IXP1200. The second correction is to add the following line after line 167: mpacket->eop = 0; This ensures the the per-mpacket state maintained by the fill threads gets properly initialized for each new packet. ------------------------------ Aaron Kunze Intel Research and Development aaron.kunze(a)intel.com ----PGP Key ID: 0x81124B7C---- ----NOT SPEAKING FOR INTEL---- ---------GO BOILERS!!--------- > -----Original Message----- > From: ixp1200-bounces(a)lists.cs.princeton.edu > [mailto:ixp1200-bounces@lists.cs.princeton.edu] On Behalf Of > chompi(a)softhome.net > Sent: Tuesday, March 30, 2004 4:04 AM > To: ixp1200(a)lists.cs.princeton.edu > Subject: [ixp1200] Transmitting pkts out of Giga ports > > > > Hi all, > > I've recently tried sample code from chap9 Johnson and Kunze > book and in > DWB, the code works fine with Fast Eth ports. However, if I > try to use GE > ports, it only works when MTU<=192 (<=3 Mpkts per pkt). If > there are >3 > Mpkts/pkt, the simulation halts with error "Transmit buffer > underflow". Does > this mean that the code is not filling up TFIFO fast enough? > Anyways, even if I set MTU<=192, I still cannot send out any > traffic on real > hardware (we are using ENP-2506). L3Fwdr reference design > works fine on the > board so I do not expect any hardware or configuration problems. > Did anybody encounter this issue before? Is there any sample > code (in micro > C) lying around that transmits data over GE ports? > > Any help is appreciated. > > Chompi. > _______________________________________________ > ixp1200 mailing list > ixp1200(a)lists.cs.princeton.edu > https://lists.cs.princeton.edu/mailman/listinfo/ixp1200 >

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