February 2012 - Test - lists.nanog.org

automatic bgp route refresh
by Joe Maimon 23 Feb '12

23 Feb '12

Hey All, I would greatly appreciate it if somebody would point me to cisco release notes for the change I see in 15.1 where BGP neighbor route-map configurations happen in real time, without needing any clearing, soft or otherwise. Seems like some have also noticed this behavior recently on some other trains. Much obliged. Best, Joe

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Question regarding anycasting in CDN setup
by Anurag Bhatia 23 Feb '12

23 Feb '12

Hello everyone! I have a small question and was wondering if someone could help me with that. Question is - why companies like Google, Amazon are having partial anycasting in CDN setups? E.g if we pick a random hostname from url of Picasa picture - lh3.googleusercontent.com - this one is further a cname string and at the end you will find different A records when checked from different locations. E.g when checked from my local system (in India): ;; QUESTION SECTION: ;lh3.googleusercontent.com. IN A ;; ANSWER SECTION: lh3.googleusercontent.com. 86276 IN CNAME googlehosted.l.googleusercontent.com. googlehosted.l.googleusercontent.com. 176 IN A 209.85.175.132 Next, lookup from a server in Europe: ;; QUESTION SECTION: ;lh3.googleusercontent.com. IN A ;; ANSWER SECTION: lh3.googleusercontent.com. 86400 IN CNAME googlehosted.l.googleusercontent.com. googlehosted.l.googleusercontent.com. 300 IN A 209.85.148.132 thus different IPs in both cases. I understand that Google is doing anycasting on core DNS servers, and thus we always hit nearest DNS server and all DNS servers are sort of independent and carry different A records for CDN strings which point to local cache server IP addresses. And here's confirmation: anurag@laptop:~$ dig googleusercontent.com. ns +short ns2.google.com. ns3.google.com. ns4.google.com. ns1.google.com. Picking ns1.google.com. and asking IP for googlehosted.l.googleusercontent.com. from different locations: anurag@laptop:~$ dig @ns1.google.com googlehosted.l.googleusercontent.com. a +short 209.85.175.132 anurag@server7:~$ dig @ns1.google.com googlehosted.l.googleusercontent.com. a +short 209.85.148.132 As expected - same server (which appears same but is different) giving different values - thus I am actually hitting different servers in both cases. Now my question here is - why this setup and not simply using having a A record for googlehosted.l.googleusercontent.com. which comes from any anycasted IP address space? Why not anycasting at CDN itself rather then only at DNS layer? Can someone explain? Thanks! -- Anurag Bhatia anuragbhatia.com or simply - http://[2001:470:26:78f::5] if you are on IPv6 connected network! Twitter: @anurag_bhatia <https://twitter.com/#!/anurag_bhatia> Linkedin: http://linkedin.anuragbhatia.com

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FCoE Deployment
by Jack Morgan 22 Feb '12

22 Feb '12

Does anyone know of any company or organization deploying FCoE[1] in a production environment? I'm curious how widely adopted this technology is. [1] http://en.wikipedia.org/wiki/Fibre_Channel_over_Ethernet http://fcoe.com/ Thanks, -- Jack Morgan

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[BIZ] Colocate at New York
by Olivier CALVANO 22 Feb '12

22 Feb '12

Hi we want see a colocate at New York: * Equinix or telehouse * 1/4 or 1/2 rack (only private rack with 1/4 or 1/2 door) * 1 Kva Dual Feeds * 1 Cross Connect Fiber * no internet. If you know a good supplier ;=) Thanks Olivier

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Cisco CAT6500 IOS Simulator
by Carlos Asensio 22 Feb '12

22 Feb '12

Hi there, Anyone know a way of simulate a Cisco CAT6500 IOS? We're trying to deploy a lab of our production environment. Thanks in advance, Carlos.

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Re: DNS Attacks
by Joel M Snyder 22 Feb '12

22 Feb '12

> http://thehackernews.com/2012/02/fbi-will-shutdown-internet-on-march-8.html Quoting the FBI: 85.255.112.0 through 85.255.127.255 67.210.0.0 through 67.210.15.255 93.188.160.0 through 93.188.167.255 77.67.83.0 through 77.67.83.255 213.109.64.0 through 213.109.79.255 64.28.176.0 through 64.28.191.255 Solve said problem easily by destination NATing those IPs on 53/UDP/TCP to your own recursive servers, or dump them on Google at 8.8.8.8 if you're so inclined. Extra bonus result: NAT logs will show who needs a pleasant email from customer service. Or you could just let 'em[1] suffer, BoFH-style. jms [1] "'em" in this case is "your customer service reps" who will see a 'higher than normal call volume' should the FBI's warning mean anything. -- Joel M Snyder, 1404 East Lind Road, Tucson, AZ, 85719 Senior Partner, Opus One Phone: +1 520 324 0494 jms(a)Opus1.COM http://www.opus1.com/jms

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Re: Customer Notification System.
by Tom Pipes 21 Feb '12

21 Feb '12

Not sure if you have a customer database/spreadsheet and what OS platform you use, but this product has served us well in the past: http://www.massmailsoftware.com/bulkmail/ Tom Pipes tom.pipes(a)t6mail.com On Tue, Feb 21, 2012 at 4:58 PM, James Wininger <jwininger(a)ifncom.net>wrote: > We are a smaller ISP in Indiana. We are growing quite rapidly (yeah for > us). We have a need for a customer notification system. We have simply > out grown the ability to send emails to our customers manually. We need > to have a better way of notifying our customers of maintenance etc. > > > > We would need to send notifications out to say about 400 customers. > Ideally the system would send an attached PDF. It would be great if this > system were SQL based etc. > > > > Does anyone know of a system that is out there that does this? We have > looked at a few applications (windows based) but integration with > billing etc seems to be a caveat. I have thought of possibly using a > mailing list type approach, but that gets us back to (almost) where we > are today. Any pointers would be greatly appreciated. > > > > -- > > Jim Wininger > > jwininger(a)ifncom.net > > > >

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Re: Common operational misconceptions
by Bob Vaughan 21 Feb '12

21 Feb '12

"Ethernet/Token Ring/Cisco Console/whatever uses an RJ45 connector" RJ45 defines a keyed 8P8C type connector, wired in a specific manner, for a specific 2 wire telco service. Incompatible with the above on several levels. "RJxx" == specific connector/wiring pattern for specific telco applications. Non-telco uses need not apply. One of these days I'm going to start carrying around some actual RJ45 type cables to hand out to those who ask. "DB9" DB defines a D series subminiature connector with a size "B" (nominal 25 pin) shell. DE defines a size "E" (nominal 9 pin) shell. DA15, DB25, DC37, DD50, DE9, etc.. Also DB13W3 (old Sun monitors), etc. If in doubt, refer to ITT/Cannon catalogs. (my oldest is from 1971). -- -- Welcome My Son, Welcome To The Machine -- Bob Vaughan | techie(a){w6yx|tantivy}.stanford.edu | techie(a)tantivy.net AF6RR | P.O. Box 19792, Stanford, Ca 94309 | 1-650-469-3850 -- I am Me, I am only Me, And no one else is Me, What could be simpler? --

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Single-port Network "KVM"
by Jay Ashworth 21 Feb '12

21 Feb '12

Here's one example; cheapest I've seen: http://www.kvm-switches-online.com/0su51068.html There are others. This one appears to be web/java based rather than VNC, though that probably isn't a killer for most people. I thought I'd seen a little dongle-y model; I'll look around a bit more. Cheers, -- jra -- Jay R. Ashworth Baylink jra(a)baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274

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Bluetooth-to-Serial (was: Re: Colo Vending Machine)
by Joel M Snyder 20 Feb '12

20 Feb '12

+1 on the suggestion for a SpiderDuo as portable KVM+your own laptop. Solves the problem and leverages the hardware you already have. Works great! Anyway: Bluetooth-to-Serial has been around for years; I did a review of several of them a while ago, even connecting with a Nokia phone (this was before iPhone/iPad existed) in a little Interop video piece in Network World. The IOGear BT-to-Serial is the most common nowadays; it is inexpensive and works pretty well and it is specifically designed for this kind of console environment. It draws 9V, so you can make a 9V battery-to-device adapter for about $2 with parts you get at Digikey if you want total portability. There are also more 'industrial' versions which are designed for longer-term use. My favorite is the BluePortXP, which has an integrated rechargeable battery, a nice little antenna, and can be externally powered if needed. That's pricey, closer to $200 as I remember, but it is designed for longer-term use in a single location. There are others along this line, a quick Google search will find them, mostly in the industrial PC-type businesses. The one I actually use almost every day is called a BlueConsole. These, unfortunately, are not available anymore. A Cisco engineer in Florida (I think) made them as a "Garagatronics" project years ago. It is a lovely piece of work, available with either a DB9 OR a RJ45 male on it, a 9V battery connector on the other end, and also powered from the serial port if available. You can dangle the RJ45 one from a Cisco router literally forever without a battery and it will BT-to-serial for 20 or 30 feet. If you can find one, buy it as it's the perfect compromise between the BluePort and the IOGear. jms -- Joel M Snyder, 1404 East Lind Road, Tucson, AZ, 85719 Senior Partner, Opus One Phone: +1 520 324 0494 jms(a)Opus1.COM http://www.opus1.com/jms

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