November 2004 - Test - lists.nanog.org

Content Delivery Networks/GSLB
by M. Huda 08 Nov '04

08 Nov '04

Hello, I am wondering if somebody can point me to the links where I can found information about Content Delivery Network Solutions used in the market today. I need to know about the technology and how the solution/company (such as Akamai) caters its customers. Do they mirror the content across their server's network? If this is the case then how a request is directed to the closest and lightly loaded server on Internet? There are other hardware (GSLB on F5, BigIP and Cisco CSS) and software (ultraDNS) solutions in the market as well but its difficult to relate those with a CDN solution such as of Akamai's or others. Does anybody have experience with F5 or BigIP GSLB solutions? I would appreciate if somebody can help me out here as well. Thanks, Huda

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DNS Problems on Saturday Night?
by John Neiberger 08 Nov '04

08 Nov '04

Forgive me for not having more technical information about this issue. Beginning sometime around 4:00 PM MST on Saturday, I started seeing horrible slowness on my home Internet connection through Comcast, and I also noticed that I was seeing numerous timeouts on DNS lookups. At the same time, a friend of mine who also uses Comcast was seeing the same thing. Approximately a third of my DNS lookups were timing out. That alone would be fairly easily explainable. However, our DNS servers at work also were having a really bad time trying to resolve external addresses. One server uses a Sprint circuit and the other server uses a Time Warner Telecom circuit, but they both point to UltraDNS. This strange behavior continued until roughly 9:00 PM MST and then the DNS problems cleared up both at home and at work. I haven't seen anyone else mention it yet but was there some sort of fairly large DNS problem for a few hours on Saturday? I don't know enough about DNS to know what form that problem might take. At this point I'm assuming it was just one of those things but I'm curious to know if the problem was more widespread. Regards, John --

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RE: Important IPv6 Policy Issue -- Your Input Requested
by Jason Frisvold 08 Nov '04

08 Nov '04

> -----Original Message----- > From: Eric Gauthier [mailto:eric@roxanne.org] > Subject: Re: Important IPv6 Policy Issue -- Your Input Requested > > > > Hello, > > I must admint, I'm really not up on the more subtle aspects > of v6 addressing > nor have I read the drafts you posted, but I've never Nor have I ... I'm just starting to look at IPv6 now.... This seems like a good discussion to jump in on though. :) > understood why we needed > a new set of RFC1918-like IPv6 space. Wouldn't 0::10.0.0.0/104, > 0::192.168.0.0/112, and 0::172.16.0.0/116 (or whatever the > appropriate masks > would be) all function as v6 addresses with exactly the same > properties at the > current RFC1918 space? If the existing RFC1918 space will exist in IPv6 as described above, that can, presumably, be used in the same way existing 1918 space is. For instance, as non-routable loopback addresses for routers, switches, etc. Correct? Or is IPv6 NAT batter suited for this in the future? > Eric :) -- Jason Frisvold Penteledata

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Update to Strange DNS Issue
by John Neiberger 08 Nov '04

08 Nov '04

I have some additional information that's making me think what I saw on Saturday was just a coincidence. We have two DNS servers that were unable to resolve external addresses beginning around 4:00 PM MST on Saturday, but I found out that they both had just been rebooted. We use some version of BIND on Solaris 9 and it was verified that named was running, yet external names would not resolve for a few hours. External names began to resolve in a few hours with no intervention on our part. BIND gurus, any idea why this might have occurred? If named is running and internal names resolve *and* there are no problems with Internet connectivity, what might cause external lookups to timeout for a few hours only to resolve spontaneously? It seems a little strange and I'm sure there's some important information that I'm missing that would make it all makes sense. Thanks, John --

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k.gtld-servers.net 0wned?
by Iljitsch van Beijnum 08 Nov '04

08 Nov '04

12 out of 13 gtld servers agree: [alumange:~] iljitsch% host -v www.imdb.com m.gtld-servers.net Trying "www.imdb.com" Using domain server: Name: m.gtld-servers.net Address: 192.55.83.30#53 Aliases: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60746 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2 ;; QUESTION SECTION: ;www.imdb.com. IN A ;; AUTHORITY SECTION: imdb.com. 172800 IN NS udns1.ultradns.net. imdb.com. 172800 IN NS udns2.ultradns.net. ;; ADDITIONAL SECTION: udns1.ultradns.net. 172800 IN A 204.69.234.1 udns2.ultradns.net. 172800 IN A 204.74.101.1 But k says something different: [alumange:~] iljitsch% host -v www.imdb.com k.gtld-servers.net Trying "www.imdb.com" Using domain server: Name: k.gtld-servers.net Address: 218.234.22.221#53 Aliases: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 248 ;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 6, ADDITIONAL: 12 ;; QUESTION SECTION: ;www.imdb.com. IN A ;; ANSWER SECTION: www.imdb.com. 1800 IN A 200.139.105.69 www.imdb.com. 1800 IN A 218.234.22.221 ;; AUTHORITY SECTION: com. 1800 IN NS ns1.thirdfloordoors02.com. com. 1800 IN NS ns1.thirdfloordoors03.com. com. 1800 IN NS ns1.thirdfloordoors04.com. com. 1800 IN NS ns1.thirdfloordoors05.com. com. 1800 IN NS ns1.thirdfloordoors06.com. com. 1800 IN NS ns1.thirdfloordoors01.com. ;; ADDITIONAL SECTION: ns1.thirdfloordoors01.com. 1800 IN A 200.139.105.69 ns1.thirdfloordoors01.com. 1800 IN A 218.234.22.221 ns1.thirdfloordoors02.com. 1800 IN A 218.234.22.221 ns1.thirdfloordoors02.com. 1800 IN A 200.139.105.69 ns1.thirdfloordoors03.com. 1800 IN A 200.139.105.69 ns1.thirdfloordoors03.com. 1800 IN A 218.234.22.221 ns1.thirdfloordoors04.com. 1800 IN A 218.234.22.221 ns1.thirdfloordoors04.com. 1800 IN A 200.139.105.69 ns1.thirdfloordoors05.com. 1800 IN A 200.139.105.69 ns1.thirdfloordoors05.com. 1800 IN A 218.234.22.221 ns1.thirdfloordoors06.com. 1800 IN A 218.234.22.221 ns1.thirdfloordoors06.com. 1800 IN A 200.139.105.69 Received 470 bytes from 218.234.22.221#53 in 1184 ms

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Re: Important IPv6 Policy Issue -- Your Input Requested
by Fergie (Paul Ferguson) 08 Nov '04

08 Nov '04

Would NAT be considered an application? :-) - ferg -- Joe Abley <jabley(a)isc.org> wrote: I don't know of any applications that require RFC1918 addresses to be deployed. (Clearly, this is not to say there are none.) -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg(a)netzero.net or fergdawg(a)sbcglobal.net

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RE: British Telecom to buy Infonet
by Scott Weeks 08 Nov '04

08 Nov '04

: From: Fergie (Paul Ferguson) : Date: Mon Nov 08 14:05:49 2004 : : British Telecom will acquire Infonet Services in a deal worth $965 : million, BT said Monday. : : http://news.com.com/British+Telecom+to+buy+Infonet/2100-1037_3-5442816.html… I wonder if they'll do any better than C&W did with Digital Island and Exodus. If not, my complete condolences go out to the Infonet employees. Looks like the investors think they will: http://finance.yahoo.com/q/bc?s=IN&t=5d&l=on&z=m&q=l&c= scott

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British Telecom to buy Infonet
by Fergie (Paul Ferguson) 08 Nov '04

08 Nov '04

British Telecom will acquire Infonet Services in a deal worth $965 million, BT said Monday. http://news.com.com/British+Telecom+to+buy+Infonet/2100-1037_3-5442816.html… - ferg -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg(a)netzero.net or fergdawg(a)sbcglobal.net

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RE: What kind of cable is this?
by Hannigan, Martin 07 Nov '04

07 Nov '04

Almost all cable you will work with will have identifying characteristics on the sheath i.e. what it is, who made it, and what standard it conforms to. That would be the better search criteria. -M< -- Martin Hannigan (c) 617-388-2663 VeriSign, Inc. (w) 703-948-7018 Network Engineer IV Operations & Infrastructure hannigan(a)verisign.com > -----Original Message----- > From: owner-nanog(a)merit.edu [mailto:owner-nanog@merit.edu] > Sent: Sunday, November 07, 2004 3:05 AM > To: nanog(a)merit.edu > Subject: What kind of cable is this? > > > > http://homepage.mac.com/smurphy/PhotoAlbum28.html > > Guy I know in Canada came across a 7200 foot spool of what > appears to be > single-strand fibreoptic cable. > > He's trying to find out its properties, UV rating, etc. Any > information > available would be great. > > I Googled for the part numbers (so did he) and came up empty. Siecor > appears to be "Corning Cable Systems" now and their website was > unhelpful, to say the least. > > If anyone has any information or knows much about this stuff, > could you > drop me a note offlist? > > Thanks! > > -Jonathan >

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What kind of cable is this?
by Jonathan Nichols 07 Nov '04

07 Nov '04

http://homepage.mac.com/smurphy/PhotoAlbum28.html Guy I know in Canada came across a 7200 foot spool of what appears to be single-strand fibreoptic cable. He's trying to find out its properties, UV rating, etc. Any information available would be great. I Googled for the part numbers (so did he) and came up empty. Siecor appears to be "Corning Cable Systems" now and their website was unhelpful, to say the least. If anyone has any information or knows much about this stuff, could you drop me a note offlist? Thanks! -Jonathan

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