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Tsunami warning for north-east Japan
by andrew.wallace 07 Apr '11

07 Apr '11

A tsunami warning is issued for north-eastern Japan after an earthquake with a magnitude of 7.4 hits the region. Andrew

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link-local address calculation
by Vikas Sharma 07 Apr '11

07 Apr '11

Hi, How to get link-local address from BIA. I have seen some information on Internet but it is not working for all. ============= The BIA in this case is cc00.0bfc.0000. The rules for the modified EUI-64 addressing are: •FFFE will be put in between the vendor-id (3 most significant bytes) and the extension-id (3 least significant bytes), which will lead to cc00.0bFF.FEfc.0000 •Thereafter the seventh bit, known as universal/local bit, gets inverted. So first change the cc00 from hex to binary, which leads to 110011 0 000000000 and then invert the seventh bit (here a 0): 110011 1 000000000. Moved back to hex this will give CE00 •At last, change all points ‘.’ to colons ‘:’ and delete all leading zeros, then you got your link-local IPv6 address: FE80::CE00:BFF:FEFC:0 ============ So if your BIA is 0008.209a.081b (bia 0008.209a.081b), how link-local be calculated. This is the link-local on router => IPv6 is enabled, link-local address is FE80::208:20FF:FE9A:81B Also on XR below is the link local address Loopback6 is Up, ipv6 protocol is Up, Vrfid is default (0x60000000) IPv6 is enabled, link-local address is fe80::884c:2dff:fe84:8d75 I can not see any interface with BIA ending with 75 ... Can someone explain me this? Regards, Vikas

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LAGing backbone links
by Payam Chychi 07 Apr '11

07 Apr '11

Hello All, I was wondering if anyone had any thoughts as to the best practices of running multiple backbone links between 2 routers. In the past we've added additional links as needed, then simply enabled IS-IS when they were good to go. I'd then let IS-IS handle load balancing the traffic over the two links. But I know that others out there would setup a LAG once they had more than one link between two routers. Is there a best practice? Does it matter? Any implications to a MPLS setup? Thanks

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Re: Bubba is a 75 year old woman looking to make some extra cash
by Raymond Macharia 07 Apr '11

07 Apr '11

Back hoes, tsunamis, earth quakes, ship anchors and now 75 year old women with spades. Moral of the story....have another cable and not next to the one that the old lady will get to. It's interesting that the article indicates that the cable is heavily protected but apparently not from "spade hackers" Raymond Macharia On 7 Apr 2011 05:05, "Suresh Ramasubramanian" <ops.lists(a)gmail.com> wrote:

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Fwd: IPv4 Address Exhaustion Effects on the Earth
by Joao C. Mendes Ogawa 06 Apr '11

06 Apr '11

FYI --Jonny Ogawa ----- Forwarded message from Stephen H. Inden ----- From: Stephen H. Inden Subject: IPv4 Address Exhaustion Effects on the Earth Date: Fri, 1 Apr 2011 00:19:08 +0200 To: Global Environment Watch (GEW) mailing list X-Mailer: Apple Mail (2.1084) X-Mailman-Version: 2.1.9 List-Id: "GEW mailing list." IPv4 Address Exhaustion Effects on the Earth By Stephen H. Inden April 1, 2011 At a ceremony held on February 3, 2011 the Internet Assigned Numbers Authority (IANA) allocated the remaining last five /8s of IPv4 address space to the Regional Internet Registries (RIRs). With this action, the free pool of available IPv4 addresses was completely depleted. Since then, several scientists have been studying the effects of this massive IPv4 usage (now at its peak) on the Earth. While measuring electromagnetic fields emanating from the world's largest IPv4 Tier-1 backbones, NASA scientists calculated how the IPv4 exhaustion is affecting the Earth's rotation, length of day and planet's shape. Dr. Ron F. Stevens, of NASA's Goddard Space Flight Center, said all packet switching based communications have some effect on the Earth's rotation. It's just they are usually barely noticeable. Until now. "Every packet affects the Earth's rotation, from a small ping to a huge multi-terabyte download. The problem with IPv4 is its variable length header and tiny address space that can cause an electromagnetic unbalance on transmission lines. The widespread adoption of Network Address Translation (NAT) on IPv4 networks is making the problem even worse, since it concentrates the electromagnetic unbalance. This problem is not noticeable with IPv6 because of its fixed header size and bigger 128 bits address space", Dr. Stevens said. Over the past few years, Dr. Stevens has been measuring the IPv4 growing effects in changing the Earth's rotation in both length of day, as well as gravitational field. When IPv4 allocation reached its peak, last February, he found out that the length of day decreased by 2.128 microseconds. The electromagnetic unbalance is also affecting the Earth's shape -- the Earth's oblateness (flattening on the top and bulging at the Equator) is decreasing by a small amount every year because of the increasing IPv4 usage. The researcher concluded that IPv4 usage has reached its peak and is causing harmful effects on the Earth: "IPv4 is, indeed, harmful. Not only 32 bits for its address space has proven too small and prone to inadequate solutions like NAT, it is now clear that its electromagnetic effects on the Earth are real and measurable." The solution? "I'm convinced that the only permanent solution is to adopt IPv6 as fast as we can", says Dr. Stevens. --

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IPV6 Training Books
by Michael Ruiz 06 Apr '11

06 Apr '11

Hello All, I am looking for some good reading material to get a better understanding of IPV6. I know how to convert HEX into decimal format. What I am looking for is how to under the CIDR notation and break them out into subnets. Thank you in advance. MAR.

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PICC'11 NJ SysAdmin Conf - Early Bird Savings Extended!
by Matt Simmons 06 Apr '11

06 Apr '11

Hello, I'm Matt Simmons, the PICC'11 (http://www.picconf.org) Conference chair, and I wanted to give you some exciting news about our community conference. First, if you haven't checked out our schedule, you should: http://bit.ly/PICC11-overview - We've got classes on Documentation, Python, Perl, Powershell, IPv6, and much much more. The opening keynote will be presented by Theo Schlossnagle from OmniTI. Second, because this is short notice, we're extending the $125 early-bird savings for one week, until Tuesday, April 12th. This discount, which is taken off immediately when you register, more than saves you the price of the hotel room. You definitely want to book now. If you need to talk to your boss to get this approved, we've even got a letter to help: http://bit.ly/PICC11-justification Also, don't worry about getting to the conference. We're located in the Hyatt Regency, New Brunswick, which is within easy walking distance from the AmTrak station, which is also serviced by NJ-Transit. We're simple to get to. We really want you to come to the conference. We think you'll have a great time, we know you'll be surrounded with people you can learn from, and if last year's is any indication, it's going to be a blast. You can get to our registration page here: http://bit.ly/PICC11-reg Again, I'm the chair of the conference, so if you have any questions, just click reply and let me know. I'm happy to answer any questions at all. Thanks for your time, and I'll see you at PICC'11! --Matt -- LITTLE GIRL: But which cookie will you eat FIRST? COOKIE MONSTER: Me think you have misconception of cookie-eating process.

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Alternatives to GSLB ?
by Jeff Blaum 05 Apr '11

05 Apr '11

Greetings, my company has application servers in several strategic locations throughout the globe. We're currently doing GSLB with a handful of BIND DNS servers, that return the A records of the closest server(s), based off of the IP address of the resolver doing the lookup for the client. GSLB obviously has caveats in this regard, and we are looking for ideas on how to 1) ensure clients are routed to the closest geographical server 2) ensure the client hits the server(s) with the shortest path. Any feedback would be appreciated. Thanks! Jeff

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Dark Fiber or Wavelength providers whom serve central Ohio
by Drew Weaver 05 Apr '11

05 Apr '11

Has anyone had any luck finding carriers who provide Dark Fiber and/or Wavelength services (10G+) around Columbus, OH? Currently I am looking for a 10G wave from Columbus to Ashburn, VA and I am having some trouble getting it done. If anyone has any suggestions please hit me off-list. Thanks, -Drew

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Re: HIJACKED: 148.163.0.0/16 -- WTF? Level3 is now doing IP hijacking??
by Jason Pope 05 Apr '11

05 Apr '11

All, WRT the below route object, DataBank does announce IP space for Hoechst Celanese Corporation as they are a direct customer of ours: > $ whois -h whois.radb.net 148.163.0.0 > route: 148.163.0.0/16 > descr: /16 for Celanese > origin: AS13767 > mnt-by: DBANK-MNT > changed: jpope(a)databank.com 20090818 > source: LEVEL3 > Currently, we only announce/originate the following prefixes via BGP: 148.163.178.0/24 148.163.179.0/24 via our providers, Level3 and Sprint. We asked our providers to relax their filters for the whole /16, since Celanese owns that IP space. That may or may not be a good idea, depending on your view of network management. We did this in case our customer needed to announce new networks which would save us the time/work of placing more/new route objects in the registry. We have the appropriate LOA for this network which is validated through face-to-face meetings with their network engineers and representatives. DataBank is very sensitive to network abuse; we have an AUP in place with all of our customers and will always work hard to enforce it to prevent network abuse. I apologize that I didn't respond sooner, but I have gotten behind on my NANOG reading. Thank you, Jason Pope DataBank Holdings 214.720.2266 office

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