October 2011 - Test - lists.nanog.org

Yahoo mail admin
by Steve Teti 07 Oct '11

07 Oct '11

Is there a Yahoo mail admin on the list who could help me? We had a problem with the DNS for our domain a couple of days ago (somehow authoritative nameservers were changed at Network Solutions). Some Yahoo users are still unable to send mail to users @monmouth.com, and some Yahoo users are sending fine. The problem is definitely affecting Verizon/Yahoo mail users but may be affecting others as well. I have a ticket open but it doesn't seem to be going anywhere. Thanks, Steve

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Not operational, but related to the attendees in Philly
by Brett Watson 07 Oct '11

07 Oct '11

I'm getting a rash of emails (as are some of my colleagues at work that are attending in Philly) from vendors that act like they know me, and just want to "have a drink and catch up while in Philly". Just me, or are others seeing an increase in spam from vendors that will be there? -b

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Re: passive bandwidth estimation
by Scott Weeks 06 Oct '11

06 Oct '11

--- vern(a)ee.lbl.gov wrote: > > Any idea how can one do bandwidth measurement based on this? > > vern paxson did extensive work in this area. van jacobson too. For more recent work, see the papers of Constantine Dovrolis. (Likely others, too, but that's the work that comes immediately to mind.) ---------------------------------------------------- For the interested; a shortcut... I went looking and found: http://www.cc.gatech.edu/~dovrolis/publications-area.html Under the "Network bandwidth estimation: capacity, available bandwidth and per-link measurements" heading I found "Available bandwidth measurement as simple as running wget". wget? heh. Looks like a fun read! :-) scott

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Looking Glass Functionality
by Positively Optimistic 06 Oct '11

06 Oct '11

Greetings Does anyone know of a off-the-self product that provides looking glass functionality for a network ? Many thanks, -Optimistic

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(no subject)
by Dennis Reak 06 Oct '11

06 Oct '11

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Re: passive bandwidth estimation
by Murtaza 06 Oct '11

06 Oct '11

Thanks a lot for referring to such valuable resources. However, the problem is that these are active measurement tools. Anyways, I will keep on looking and will post if I'll find a good passive measurement solution. Regards, Ghulam On Thu, Oct 6, 2011 at 6:26 PM, Ricardo Oliveira <rvelosoo(a)gmail.com> wrote: > http://www.icir.org/models/tools.html > > --Ricardo > > On Oct 4, 2011, at 11:39 PM, Murtaza wrote: > > > Hi everyone, > > I want to do passive available bandwidth measurement. I was just > wandering > > what tools/techniques people are generally using these days. And is it a > > good idea to use congestion window as parameter. > > Ghulam > >

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passive bandwidth estimation
by Murtaza 06 Oct '11

06 Oct '11

Hi everyone, I want to do passive available bandwidth measurement. I was just wandering what tools/techniques people are generally using these days. And is it a good idea to use congestion window as parameter. Ghulam

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status of cable breaks in Asia (IAC, C2C, AAG)
by Nathanael C. Cariaga 06 Oct '11

06 Oct '11

Hi, Just wondering if anyone here have an idea on the restoration efforts of IAC, C2C, AAG Cable systems? Thanks! -- -nathan

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events
by harbor235 06 Oct '11

06 Oct '11

What is everyone using to collect, alert, and analyze syslog data? I am looking for something that can generate reports as well as support multiple vendors. We have done some home grown stuff in the past but would be interested in something that incorprates all the best features. Soalrwinds, splunk, fwanalog, and others come to mind, any other good ones out there? Mike

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F.ROOT-SERVERS.NET moved to Beijing?
by Janne Snabb 05 Oct '11

05 Oct '11

I happened to notice the following at three separate sites around the US and one site in Europe: $ dig +short +norec @F.ROOT-SERVERS.NET HOSTNAME.BIND CHAOS TXT "pek2a.f.root-servers.org" and: $ dig +short +norec @F.ROOT-SERVERS.NET HOSTNAME.BIND CHAOS TXT "pek2b.f.root-servers.org" After running a couple of traceroutes it appears that he.net has a route for F's anycast IPv6 address (2001:500:2f::f) towards Beijing. According to https://www.isc.org/community/f-root/sites the Beijing node should be a "Local Node" (without IPv6 but I suppose the list is not up to date). I believe this means that a lot of DNS queries from IPv6 enabled sites in US and other countries are going to Beijing. I wonder if this is intentional? Chinese government (CNNIC) seems to be in the path. All my sites seem to have he.net somewhere in the IPv6 connectivity path. I wonder if this is specific to he.net or more wide-spread routing anomaly? I have notified he.net NOC and F-root @ ISC. Best Regards, -- Janne Snabb / EPIPE Communications snabb(a)epipe.com - http://epipe.com/

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