- Test - lists.nanog.org

L2 redundant VPN
by Tomas Podermanski 22 Jan '13

22 Jan '13

Hi networking guys, I need some help :-). We try to find for our department reliable solution for L2 VPN. The task is to connect two remote data centers, each of them connected two 1Gbps lines (with link aggregation). Only IP connectivity between data centers is available (so there is no possibility to create circuit based on MPLS or something like that). The basic problem is that high reliability is required, so the solution have to be fully redundant. The initial idea was about two OpenVPN servers in each data center + two switches (HP E5800) joined into one logical switch via VRF. The link failure is based on LACP packets between both data centers. The solution works, however performance of OpenVPN is really creepy. The maximum we were able to get from this configuration was about 100Mbps. We expect at least 500Mbps (or more in the future). In our thoughts then we were thinking about l2tp on some cisco/HP(H3C) device, however there is little information about performance of that solution and I am not sure how the failure detection would work in redundant configuration. Have anybody some experience with similar solution or at least any idea ? Thanks a lot for thoughts Tomas

5 4

Multicast over GRE between Linux server and Cisco Router
by Brian Christopher Raaen 22 Jan '13

22 Jan '13

I am trying to set up multicast between a Linux server and Router using GRE. The GRE tunnel is up fine and I can see traffic go across it, but the router is not indicating it is receiving the IGMP joins that the server is sending. I have identical setting with another server attached to fastethernet0/1 and it is joined to the group fine, but I am not able to get the server to link to the router via GRE interface. Note that I have another server behind another router where the two routers do GRE and PIM and that on is working fine. Is there some reason that IGMP joins would not work across the GRE link, but another router using PIM would? -- Brian Christopher Raaen Network Architect Zcorum

4 4

Re: Equipment Shuffing Cart Recommendations (Mike Hale)
by Travis Foschini 21 Jan '13

21 Jan '13

I recently purchased a couple of these collapsible carts @ for the same purpose and they work very well... http://www.frys.com/product/6390451?site=sr:SEARCH:MAIN_RSLT_PG They're a tad difficult to close after use but I expect they'll relax and ease after additional use. Regards, Travis Foschini > On Jan 21, 2013, at 11:28, Michael Vallaly <nanog(a)nolatency.com> wrote: > > > > > Anyone have any good recommendations for an equipment cart to shuffle > IT/Telco equipment around between an office/colo ? > > > > Id like something able to carry ~6 1U Dell servers at once, and maybe make > it over an elevator gap without a running start. Collapsible would also be > nice, if I can throw it in the back of a car once in a while is a big plus. > > > > Thanks > > > > -Mike > > > > -- > > Michael Vallaly <mvallaly(a)nolatency.com>

1 0

Call For Papers: EuroMPI 2013 Madrid, Spain
by Javier Garcia Blas 21 Jan '13

21 Jan '13

Dear Sir or Madam, (We apologize if you receive multiple copies of this message) ============================================================ Recent Advances in Message Passing Interface. 20th European MPI Users' Group Meeting (EuroMPI 2013) EuroMPI 2013 is being held in cooperation with SIGHPC Madrid, Spain, September 15-18, 2013 www.eurompi2013.org BACKGROUND AND TOPICS ------------------------------- EuroMPI is the preeminent meeting for users, developers and researchers to interact and discuss new developments and applications of message-passing parallel computing, in particular in and related to the Message Passing Interface (MPI). The annual meeting has a long, rich tradition, and the 20th European MPI Users' Group Meeting will again be a lively forum for discussion of everything related to usage and implementation of MPI and other parallel programming interfaces. Traditionally, the meeting has focused on the efficient implementation of aspects of MPI, typically on high-performance computing platforms, benchmarking and tools for MPI, short-comings and extensions of MPI, parallel I/O and fault tolerance, as well as parallel applications using MPI. The meeting is open towards other topics, in particular application experience and alternative interfaces for high-performance heterogeneous, hybrid, distributed memory systems. Topics of interest include, but are not limited to: - MPI implementation issues and improvements - Extensions to and shortcomings of MPI - Tools and environments for MPI - Hybrid and heterogeneous programming with MPI and other interfaces - Relation of MPI to alternative interfaces for hybrid/heterogeneous distributed memory systems - Interaction between message-passing software and hardware, in particular new high performance architectures - Fault tolerance in message-passing implementations and systems - Performance evaluation for MPI and MPI based applications- - Automatic performance tuning of MPI applications and implementations - Verification of message passing applications and protocols - Applications using message-passing, in particular in Computational Science and Scientific Computing - Non-standard message-passing applications - Parallel algorithms in the message-passing paradigm - Algorithms using the message-passing paradigm The meeting will feature contributed talks on the selected, peer-reviewed papers, invited expert talks covering upcoming and future issues, a vendor session where selected vendors will present their new developments in hybrid and heterogeneous cluster and high-performance architectures, a poster session, and a tutorial day. The scientific part of the conference is organized in cooperation with ACM SIGHPC. Conference proceedings will be published in the ACM Digital Library, which includes short and long papers, workshop papers, and posters. Selected high quality papers will be published in an international journals. There will also be a reward for the overall best paper from the academic conference. WORKSHOPS ------------------------------- IMUDI SPECIAL SESSION ON IMPROVING MPI USER AND DEVELOPER INTERACTION The IMUDI special session, to be held as a full-day meeting at the EuroMPI 2013 conference in Madrid, Spain, focuses on bringing together the MPI end-user and MPI implementor communities through discussions on MPI usage experiences, techniques, and optimizations. This meeting will focus on evaluating the MPI standard from the perspective of the MPI end-user (application and library developers) and address concerns and insights of MPI implementors and vendors. Unlike workshops associated with other conferences, the IMUDI session is still considered to be a part of the Euro MPI conference. Submissions will be reviewed separately to facilitate bringing together research publications falling into these "special focus" areas. More info at: http://press.mcs.anl.gov/imudi/ ENERGY-EFFICIENT HIGH PERFORMANCE COMPUTING & COMMUNICATION WORKSHOP (E2HPC2) 2013 The first Energy-Efficient High Performance Computing & Communication workshop will be co-located with EuroMPI 2013 in Madrid. Energy-awareness is now a main topic for HPC systems. The goal of this workshop is to discuss latest researches on the impact and possibles leverages of communications for such systems. E2HPC2 solicits original and non-published or under-review articles on the field of energy-aware communication in HPC environment. This workshop is co-located with EuroMPI as MPI is the main communication interface in those environments. More info at: http://www.irit.fr/~Georges.Da-Costa/e2hpc2.html PBIO 2013: INTERNATIONAL WORKSHOP ON PARALLELISM IN BIOINFORMATICS In Bioinformatics, we can find a variety of problems which are affected by huge processing times and memory consumption, due to the large size of biological data sets and the inherent complexity of biological problems. In fact, Bioinformatics is one of the most exciting research areas in which Parallelism finds application. Successful examples are mpiBLAST or ClustalW-MPI, among many others. In conclusion, Bioinformatics allows and encourages the application of many different parallelism-based technologies. The focus of this workshop is on MPI-based approaches, but we welcome any technique based on: multicore and cluster computing, supercomputing, grid computing, cloud computing, hardware accelerators as GPUs, FPGAs, or Cell processors, etc. More info at: http://arco.unex.es/mavega/pbio2013/ SUBMISSION INFORMATION ------------------------------- Contributors are invited to submit a full paper as a PDF document not exceeding 6 pages in English. The title page should contain an abstract of at most 100 words and five specific, topical keywords. The paper must be formatted according to double-column ACM ICPS proceedings style. The usage of LaTeX for preparation of the contribution as well as the submission in camera ready format is strongly recommended. Style files can be found at http://www.acm.org/publications/icps-instructions/. New work that is not yet mature for a full paper, short observations, and similar brief announcements are invited for the poster session. Contributions to the poster session should be submitted in the form of a two page abstract. All contributions will be fully peer reviewed by the program committee. Papers shall be submitted electronically via Easychair, see http://www.easychair.org/conferences/?conf=eurompi2013. AWARDS ------------------------------- There will be awards for the best paper and best student paper. These awards will be chosen by the program committee. The best paper award will be given to the paper judged to have the highest overall quality. SCHEDULE, IMPORTANT DATES ------------------------------- - Submission of full papers and poster: March 29th, 2013 - Author notification: May 11th, 2013 - Camera Ready papers due: June 15th, 2013 - Tutorial(s): September 15th, 2012 - Conference: September 16th-18th, 2013 COMMITTEE ------------------------------- GENERAL CHAIR Jack Dongarra, University of Tennessee, Knoxville, USA ORGANIZERS, PC CHAIRS Javier Garcia Blas, Carlos III University (fjblas(a)inf.uc3m.es) Jesus Carretero, Carlos III University (jesus.carretero(a)uc3m.es) PROGRAM COMMITTEE Pavan Balaji, Argonne National Laboratory Siegfried Benkner, University of Vienna George Bosilca, Innovative Computing Laboratory - University of Tennessee Gil Bloch, Mellanox Technologies Ron Brightwell, Sandia National Laboratories Darius Buntinas, Argonne National Laboratory Franck Cappello, INRIA and University of Illinois at Urbana-Champaign Yiannis Cotronis, National and Kapodistrian University of Athens Chi-Yin Chow, Department of Computer Science, City University of Hong Kong Anthony Danalis, University of Tennessee Luiz Derose, Cray Christian Engelmann, Oak Ridge National Laboratory Edgar Gabriel, University of Houston Brice Goglin, INRIA Ganesh Gopalakrishnan, University of Utah David Goodell, Argonne National Laboratory Richard Graham, Oak Ridge National Laboratory William Gropp, University of Illinois at Urbana-Champaign Rainer Keller, HFT Stuttgart, University of Applied Science Julian Kunkel, Universitat Hamburg Thomas Herault, University of Tennessee Bronis De Supinski, Lawrence Livermore National Laboratory Thomas Ludwig, German Climate Computing Center and University of Hamburg David E. Singh, University Carlos III of Madrid Torsten Hoefler, ETH Zurich Atsushi Hori, RIKEN AICS Florin Isaila, University Carlos III of Madrid Akihiro Inokuchi, Osaka University Yutaka Ishikawa, Graduate School of Information Science and Technology / Information Technology Center, The University of Tokyo Emmanuel Jeannot, INRIA Dries Kimpe, Argonne National Laboratory Jesper Larsson Traf, Vienna University of Technology Alexey Lastovetsky, UCD School of Computer Science & Informatics Laurent Lefevre, INRIA Dong Li, Oak Rdige National Lab Ewing Lusk, Argonne National Laboratory Teng Ma, NetApp Inc Guillaume Mercier, ENSEIRB/INRIA Bernd Mohr, Juelich Supercomputing Center Raffaele Montella, Department of Applied Science - University of Naples Parthenope Julian David Morillo Pozo, Barcelona Supercomputing Center Matthias Mueller, ZIH, TU Dresden Jose Nelson Amaral, University of Alberta Jaechun No, Sejong University Maria S. Perez, Technical University of Madrid Rolf Rabenseifner, HLRS, University of Stuttgart Rolf Riesen, IBM Gudula Runge, Chemnitz University of Technology Mitsuhisa Sato, University of Tsukuba Christian Siebert, RWTH Aachen University Anna Sikora, DACSO - UAB Shinji Sumimoto, Fujitsu Laboratories Frederic Suter, IN2P3 Computing Center Jeff Squyres, Cisco Alexander Supalov, Intel GmbH Domenico Talia, Universita della Calabria Vinod Tipparaju, AMD Rajeev Thakur, Argonne National Laboratory Carsten Trinitis, University of Bedfordshire Yuichi Tsujita, Kinki University Denis Trystram, Grenoble university Keith Underwood, Intel Mateo Valero, Barcelona Supercomputing Center Alan Wagner, University of British Columbia Roland Wismulle, University of Siegen Roman Wyrzykowski, Czestochowa University of Technology Xin Yuan, Florida State University CONFERENCE FEES ------------------------------- The conference will hopefully be well supported by sponsors, which will help directly towards keeping the fees low. As far as possible, special student fees will be offered.

1 0

Re: Equipment Shuffing Cart Recommendations
by Scott Weeks 21 Jan '13

21 Jan '13

--- jgreco(a)ns.sol.net wrote: From: Joe Greco <jgreco(a)ns.sol.net> > I got some ad email from ServerLift (serverlift.com) a while back. It > wasn't justified for my environment, but the units did look really cool. It was pretty clear that they had scraped NANOG for addresses at one point, and I keep getting these unsolicited messages from one of their pushy salespeople, which is pretty much the gold standard way to be assured not to have any possibility of making a sale. --------------------------------------------------------- That's good to know they're spammers in case I have a need. I'll be sure to look elsewhere. scott

1 0

Contact at Tucows domains?
by Rob McEwen 21 Jan '13

21 Jan '13

RE: Contact at Tucows domains? Anyone know a good high-level contact at Tucows Domains? I have a customer who is having a problem with a Tucows Reseller. (massive problems!)... and Tucow's own domain support line isn't being very helpful. (the guy just wants to pay with a credit card for the renew his domain... he is NOT asking for much!) -- Rob McEwen http://dnsbl.invaluement.com/ rob(a)invaluement.com +1 (478) 475-9032

2 3

CALEA options for small/midsize ISPs
by Byron Hooper 21 Jan '13

21 Jan '13

Hello All, My company is looking at updating our CALEA set up. Our network has changed appreciably since our initial rollout and I am looking at utilizing Cisco's Lawful Intercept. I'm wondering what people are using as "Mediator Devices", aka what the Cisco routers are sending the Lawful Intercept stream to. Cisco's Lawful Intercept seems like a solid option since all it requires for us is an IOS upgrade on our core routers and something to act as a Mediator, but I'm also interested in solutions others are using. -- Byron Hooper Network Engineer GWI 8 Pomerleau Street Biddeford, ME 04005 Office & Cell: (207) 602-1215

7 10

EQUINIX
by Ryan Finnesey 21 Jan '13

21 Jan '13

What's the going rate now a days for a rack within EQUINIX? Cheers Ryan

7 6

Re: Dreamhost hijacking my prefix...
by Scott Weeks 20 Jan '13

20 Jan '13

--- andree+nanog(a)toonk.nl wrote: From: Andree Toonk <andree+nanog(a)toonk.nl> Here's some more data showing an announcement for 150.182.208.0/20 originated by 26347 http://www.ris.ripe.net/mt/rissearch-result.html?aspref=150.182.208.0%2F20&… ------------------------------------------------- RIPE needs to fix on their web site: "Please turn on the cookies on your browser to view this site." It doesn't have to be this way... scott

11 16

Intermittent incorrect DNS resolution?
by Erik Levinson 20 Jan '13

20 Jan '13

Hi everyone, I'm having an unusual DNS problem and would appreciate feedback. For the zones in question, primary DNS is provided by GoDaddy and secondary DNS by DNS Made Easy. Over a week ago we made changes to several A records (including wildcards on two different zones), all already having a TTL no greater than one hour. The new IPs on those A records have taken many millions of requests since the changes. Occasionally, a small amount of traffic appears at the old IPs that those A records had. This is HTTP traffic. Packet captures of this traffic show various Host headers. Attempting to resolve those various Host headers from various networks in Canada against various random private and public resolvers and against the authoritative NSs all yield correct results (i.e. new IPs). However, both GoDaddy and DNS Made Easy use anycast, which makes it less likely that I can see the entire picture of what's happening. I suspect that somewhere, one of their servers has the wrong data, or some resolver is misbehaving, but based on the pattern/traffic/volume/randomization of hostnames, the resolver theory is less likely. I haven't analyzed the source IPs yet to see if they're in a particular set of countries. I've opened a ticket with DNS Made Easy and they replied very quickly suggesting the problem is not with them. I've opened a ticket with GoDaddy and...well, it's GoDaddy, so I don't expect much (no response yet). Any ideas? Can folks try resolving eriktest.uberflip.com and post here with details only if it resolves to an IP starting with 76.9 (old IPs)? Thanks Erik

13 23