Re: largest OSPF core

On 2 Sep 2010, at 8:20 PM, lorddoskias wrote: > I'm just curious - what is the largest OSPF core (in terms of number of > routers) out there? I have seen (as a consultant, not operator) a production SP network that had over 800 routers in the backbone area. The LSDB was rather small as the net

Re: eBGP Multihop

On 2 Sep 2010, at 5:30 PM, Graham Beneke wrote: > I have been asked to investigate moving an entire network to multi-hop on all > the eBGP sessions. Basically all upstreams, downstreams and peers will eBGP > with a route reflector located in the core. This RR will be some kind of > quagga or s

Re: Sustaining the Internet with hyperbolic mapping

On Sep 9, 2010, at 5:23 PM, Eugen Leitl wrote: > http://www.nature.com/ncomms/journal/v1/n6/full/ncomms1063.html At first glance, this looks a bit familiar: --- Roland

Re: Copyright Enforcement DoS/DDoS Attacks

On Fri, Sep 10, 2010 at 1:29 AM, wrote: > > Kind of a shame..  We are likely already tracking his botnets so I almost > welcome it as well. Out of curiosity, I did pull some stats over the last 60 > days and we have seen more attacks originating from the India area than we > have seen in the p

Re: Cogent issues

Verizon had huge fiber break on Friday. It effect a large portion of the north east. It would imagine there would left over issues Sent from my iPhone On Sep 9, 2010, at 7:09 AM, Bret Clark wrote: > We've been noticing high latency for some time with Verizon (UUNET) > connections at least thr

Re: Reverse traceroute and spoofing of sources of packets?

According to the presentation they were planning on releasing a downloadable tool by May 2009, but in searching around I found no evidence that this was ever released. -Ryan On Thu, Sep 9, 2010 at 4:22 PM, Christopher Morrow wrote: > > I missed this meeting/preso when it happened (yes, 5+ meetin

Re: POS to Ethernet Converter

On 9/9/2010 10:59, Alan Bryant wrote: > I did a quick google search for a converter but either I'm not > understanding, or I'm not searching for the right thing. > > We currently have a POS OC-3 that I would like to be able to convert > it to Ethernet, if possible. > > Do such devices exist? >

Re: POS to Ethernet Converter

I currently have several dozen ONS 15310-MA's deployed to do exactly that, convert OC12's and OC48's into 1 or 2 gige's. Its a bookend solution, so you need a box for each end of the circuit, but in our case the cost of the two boxes was still cheaper than the router POS interfaces. There are che

Re: Copyright Enforcement DoS/DDoS Attacks

He mentioned doing work (for hire) in AU and such. I think he may be in for a rude awakening since our past experience with the Australian authorities is they are more active chasing ddos/cyber-crimes than the U.S. Those guys pull out all the stops to prosecute. (Which I am happy to see) Sadly,

Re: ISP port blocking practice

On Thu, Sep 02, 2010 at 04:59:57PM -0500, Zhiyun Qian wrote: > One of the high-level findings is that we developed probing techniques > to verify that indeed most ISPs are only blocking 1) "outgoing traffic > of destination port 25" instead of 2) "incoming traffic with source > port 25", which mean

Re: POS to Ethernet Converter

I can vouch for the RAD gear. Pretty simple and to the point. On 9/9/10, Mikael Abrahamsson wrote: > On Thu, 9 Sep 2010, Alan Bryant wrote: > >> We currently have a POS OC-3 that I would like to be able to convert >> it to Ethernet, if possible. >> >> Do such devices exist? > > Yeah, and it's pre

Re: POS to Ethernet Converter

I can vouch for the RAD gear. Pretty simple and to the point. On 9/9/10, Mikael Abrahamsson wrote: > On Thu, 9 Sep 2010, Alan Bryant wrote: > >> We currently have a POS OC-3 that I would like to be able to convert >> it to Ethernet, if possible. >> >> Do such devices exist? > > Yeah, and it's pre

Re: ISP port blocking practice

On Thu, Sep 02, 2010 at 04:59:57PM -0500, Zhiyun Qian wrote: > One of the high-level findings is that we developed probing techniques > to verify that indeed most ISPs are only blocking 1) "outgoing traffic > of destination port 25" instead of 2) "incoming traffic with source > port 25", which mean

Reverse traceroute and spoofing of sources of packets?

I missed this meeting/preso when it happened (yes, 5+ meetings ago) I note the talks about using spoofed source packets to do some measurement, I didn't see anyone in the video say: "But spoofing is bad, but you

Re: Copyright Enforcement DoS/DDoS Attacks

He mentioned doing work (for hire) in AU and such. I think he may be in for a rude awakening since our past experience with the Australian authorities is they are more active chasing ddos/cyber-crimes than the U.S. Those guys pull out all the stops to prosecute. (Which I am happy to see) Sadly,

Re: POS to Ethernet Converter

You could always use a pair of SONET ADMs on both sides with OC-3 cards and ethernet cards. Cisco 15454 is a little big, but maybe the 15327 would have OC-3 cards... -- Tim On Thu, Sep 9, 2010 at 12:59 PM, Alan Bryant wrote: > I did a quick google search for a converter but either I'm not > und

Re: ISP port blocking practice

>That's really the question at hand here -- whether or not there's any >benefit to continuing the "never ending arms race" game. Some people >think there is. Others question whether anything is really being >accomplished. Certainly we're playing it out like an arms race -- ISPs >block something,

Re: POS to Ethernet Converter

On Thu, 9 Sep 2010, Alan Bryant wrote: We currently have a POS OC-3 that I would like to be able to convert it to Ethernet, if possible. Do such devices exist? Yeah, and it's pretty sweet idea. Haven't used it myself but it seems really nice.

Re: POS to Ethernet Converter

They're called "routers". ;) Otherwise, your framing is completely different between those mediums, so it's not like going from 100Base-FX ethernet to 100Base-TX ethernet! HTH, Scott Morris, CCIEx4 (R&S/ISP-Dial/Security/Service Provider) #4713, CCDE #2009::D, JNCIE-M #153, JN

RE: POS to Ethernet Converter

-- Michael K. Smith - CISSP, GSEC, GISP Chief Technical Officer - Adhost Internet LLC mksm...@adhost.com w: +1 (206) 404-9500 f: +1 (206) 404-9050 PGP: B49A DDF5 8611 27F3 08B9 84BB E61E 38C0 (Key ID: 0x9A96777D) > -Original Message- > From: Alan Bryant [mailto:a...@gtekcommunications.

POS to Ethernet Converter

I did a quick google search for a converter but either I'm not understanding, or I'm not searching for the right thing. We currently have a POS OC-3 that I would like to be able to convert it to Ethernet, if possible. Do such devices exist? -- Alan Bryant | Systems Administrator Gtek Computers

Re: Copyright Enforcement DoS/DDoS Attacks

On Sep 9, 2010, at 11:43 PM, Jeffrey Lyon wrote: > He may get some business out of it, now that he has effectively put out a > DDoS for hire ad. The relevant Indian authorities have been notified - my guess is that he'll soon be receiving some interesting visitors. ;> --

Re: Copyright Enforcement DoS/DDoS Attacks

He may get some business out of it, now that he has effectively put out a DDoS for hire ad. Jeff On Thu, Sep 9, 2010 at 8:56 PM, Beavis wrote: > man.. this guy is retarded.. good luck posing your company, face and such. lol > > -- Jeffrey Lyon, Leadership Team jeffrey.l...@blacklotus.net | h

Re: Copyright Enforcement DoS/DDoS Attacks

man.. this guy is retarded.. good luck posing your company, face and such. lol

Re: Sustaining the Internet with hyperbolic mapping

On 9/9/2010 7:24 AM, Jared Mauch wrote: I had read this as well last night. It's an interesting read and I was going to send the authors some feedback as it relates to the asymmetrical nature of BGP announcements impact on ASes, and seeking some of the data on the node/edge layouts that hav

Re: DS3 mux recommendation

We've switched away from the CAC Widebank28s for the denser, cooler Adtran MX2820s. Our reasons were for the exact issues explained below. On 9/9/2010 11:03 AM, Jon Lewis wrote: On Thu, 9 Sep 2010, Jay Nakamura wrote: I haven't researched stand alone DS3 mux in a long time and was wondering

RE: DS3 mux recommendation

I've run into the same situations w/ the Widebanks. Controllers like to die in the middle of the night. I also ran into a situation where a tech went to replace a Widebank w/ an Adtran and jammed the Amphenol connectors onto the Adtran the wrong way. That was an interesting night... My supply o

Re: DS3 mux recommendation

On 9/9/10 9:33 AM, Jay Nakamura wrote: I haven't researched stand alone DS3 mux in a long time and was wondering if anyone can recommend a DS3 Mux. I have used Adtran before. (Long ago) The products back then worked fine on line level but management interface was awful and if you threw too much

RE: DS3 mux recommendation

I can 2nd the recommendation for the MX2820 series. 9 DS3 mux per 2U chassis w/ redundancy. Very nice product if you're needing to save space in a rack. mrt -Original Message- From: sjk [mailto:s...@sleepycatz.com] Sent: Thursday, September 09, 2010 11:39 AM To: Jay Nakamura Cc: NANO

Re: DS3 mux recommendation

On Thu, 9 Sep 2010, Jay Nakamura wrote: I haven't researched stand alone DS3 mux in a long time and was wondering if anyone can recommend a DS3 Mux. I have used Adtran before. (Long ago) The products back then worked fine on line level but management interface was awful and if you threw too mu

Re: DS3 mux recommendation

We use Adtran MX2820s which have been pretty reliable. They are designed for medium density, so I am not sure if they'll be applicable to your situation. We pull and trap a fair amount of snmp from them with no problems. Jay Nakamura wrote: > I haven't researched stand alone DS3 mux in a long time

Re: DS3 mux recommendation

The adtran TA 3000 is a solid product. -- Justin Wilson http://www.mtin.net/blog ­ xISP News http://www.twitter.com/j2sw ­ Follow me on Twitter Wisp Consulting ­ Tower Climbing ­ Network Support From: Jay Nakamura Date: Thu, 9 Sep 2010 11:33:43 -0400 To: NANOG Subject: DS3 mux recommendatio

DS3 mux recommendation

I haven't researched stand alone DS3 mux in a long time and was wondering if anyone can recommend a DS3 Mux. I have used Adtran before. (Long ago) The products back then worked fine on line level but management interface was awful and if you threw too much SNMP at it and the management interface

Re: Cogent issues

A lot of our traffic hits VZ as well and goes either to DC or points in NY. Been happening off and on since Labor Day weekend. CM On Thu, Sep 9, 2010 at 7:09 AM, Bret Clark wrote: > We've been noticing high latency for some time with Verizon (UUNET) > connections at least through the NY ar

Anyone seeing problems with PCCW?

I'm seeing routes die on PCCW's network both in Amsterdam and Washington DC with destinations to Asia (Hong Kong is mainly what I've tested). However the routes are fine from Los Angeles. Does anyone know of any fiber cuts or issues that would be causing this?

re: Cogent issues

No Cogent issues here in Florida. Nick Olsen Network Operations (877) 804-3001 x106 From: "Charles Mills" Sent: Wednesday, September 08, 2010 10:35 PM To: "NANOG list" Subject: Cogent issues Anyone notice any issues with Cogent? Internet Health Repor

Re: Sustaining the Internet with hyperbolic mapping

On Sep 9, 2010, at 6:23 AM, Eugen Leitl wrote: > > http://www.nature.com/ncomms/journal/v1/n6/full/ncomms1063.html I had read this as well last night. It's an interesting read and I was going to send the authors some feedback as it relates to the asymmetrical nature of BGP announcements im

Re: Cogent issues

We've been noticing high latency for some time with Verizon (UUNET) connections at least through the NY area. On 09/08/2010 10:34 PM, Charles Mills wrote: Anyone notice any issues with Cogent? Internet Health Report showing some high latency to Verizon and a couple of other carriers.

Sustaining the Internet with hyperbolic mapping

http://www.nature.com/ncomms/journal/v1/n6/full/ncomms1063.html Sustaining the Internet with hyperbolic mapping Marián Boguñá, Fragkiskos Papadopoulos & Dmitri Krioukov Nature Communications 1 , Article number: 62 doi:10.1038/ncomms1063 Received 06 April 2010 Accepted 06 August 2010 Published