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RE: IP Addresses for collocation
by Hire, Ejay 22 Jun '01

22 Jun '01

Yes and no. Can you half-drown yourself at the watering hole? If you (BGP) peer with the ISP(s) at the Colo facility, then you can advertise your Ip space and it will work at any facility. The bad news is that if you advertised Provider A's Ip space, and then go to a colo not served by Provider A, they will (rightly) want their Ip's back. If your Ip requirements were large enough to justify "Provider independent" space, then it would be portable everywhere. Good Luck, Ejay -----Original Message----- From: Mark J. Scheller [mailto:scheller@u1.net] Sent: Thursday, June 21, 2001 4:15 PM To: Subject: IP Addresses for colocation Hello NANOG, I'm in the process of evaluating whether to transition away from self-hosting web servers to have them hosted at a colocation facility. The obvious advantages being greater capacities for bandwidth, power, cooling, and oh yes, proper methods of putting out a fire (instead of drowning the servers in water if they so much as overheat). The concern I have is this: if we decide a few months down the road that we don't like this particular colocation facility and wish to move to another one across the street, I'd have to renumber all of my hosts. Is it possible to go to any colocation facility with a block of IP addresses in hand and use them? I'm talking about a /24 here, so I cannot request the addresses directly from ARIN, rather I need to get them from some other source. I attempted to get them from our current bandwidth provider, but they seem to be a little taken aback by my request for a block of addresses that will not be routed by them -- in fact, while writing this they called to tell me they will not provide IP space unless they route to it. Is there a better way to get a /24 that can "go anywhere"? Or should I just justify a /24 at the colocation facility and go through the same process should we decide to change? Is there a way to buy a routable /24? Thanks in advance for any advice, on or off list. I will summarize unless the answer is "you're crazy, such things aren't possible" in which case I'll be off drowning my sorrows at a nearby watering hole. Mark J. Scheller (scheller(a)u1.net)

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Deaggregation of class B..
by Bleetzin Boopzin 21 Jun '01

21 Jun '01

Can anyone offer some advice on how to explain to my boss that further deaggregating and spreading little announcements of our class B to different ISPs all over the world is a bad idea? Are there any specific web page references or previous NANOG posts that accurately explain the risks/implications from an objective viewpoint? -- Thanks __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/

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ARIN to Allocate from 67.0.0.0/8 and 68.0.0.0/8
by Richard Jimmerson 21 Jun '01

21 Jun '01

In the near future, ARIN will begin making allocations from 67.0.0.0/8 and 68.0.0.0/8. This will include allocations of /20 and shorter prefixes, according to ARIN's minimum allocation policy. For informational purposes, a list of ARIN's currently administered blocks can be found at http://www.arin.net/regserv/IPStats.html Regards, Richard Jimmerson Director of Operations American Registry for Internet Numbers (ARIN)

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Re: aol rejects mailing lists?
by Andy Bradford 21 Jun '01

21 Jun '01

Thus said "J.F. Noonan" on Wed, 20 Jun 2001 17:00:41 CDT: > When I first read it, I laughed out loud because I *do* tend to > think of AOL as an incorrect domain. But this, coupled with > Christian's report, looks more like they've broken something than > done something deliberate. Telneting to port 25 of > air-yh04.mail.aol.com times out at the moment... Hmm, that shouldn't come as a surprise since it isn't even listed as an MX: [andy@home:mail andy]$ dnsmx aol.com 15 mailin-01.mx.aol.com 15 mailin-02.mx.aol.com 15 mailin-03.mx.aol.com 15 mailin-04.mx.aol.com In addition, unless you have some special routes, I'm not even sure how you are getting anywhere with that name: [andy@home:mail andy]$ dnsip air-yh04.mail.aol.com 172.18.147.41 Which is clearly a private class address as defined by RFC 1918. Probably a big no-no publishing private addresses in your public DNS, but this is AOL we're talking about, right? :-) Andy -- [-----------[system uptime]--------------------------------------------] 6:40pm up 42 days, 21:18, 4 users, load average: 1.14, 1.29, 1.20

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aol rejects mailing lists?
by Christian Kuhtz 20 Jun '01

20 Jun '01

Hey guys, I've noticed on one of the mailing lists that I'm running that AOL has just started bouncing email (like literally a few minutes ago) sent to subscribers of the list. Email does get delivered properly when sent directly to the subscribers. If the mail gets delivered thru the list, it's rejected with a 550 MAILBOX NOT FOUND which is bogus. Anyone encountered this before? How do I get them to stop this nonsense? Help? Cheers, Chris -- Christian Kuhtz <ck(a)arch.bellsouth.net> -wk, <ck(a)gnu.org> -hm Sr. Architect, Engineering & Architecture, BellSouth.net, Atlanta, GA, U.S. "I speak for myself only.""

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Level3
by Ask Bjoern Hansen 19 Jun '01

19 Jun '01

Hi, We're looking around for a new colocation provider for aroudn ~100Mbit traffic. (Not much for the average NANOG participant I'm sure, but that's what we've got ... :-) ) Level3 are giving us a pretty good quote; and all their competitors' sales bozos ramble on about how they're "second tier" and bla bla bla. What's the (technical) truth? Does Level3 have decent connectivity (primarily from their colos in the Bay Area and Los Angeles). From what traceroutes and such I can do it looks just fine and Yahoo wouldn't be using them if they sucked that badly, huh? Any gotchas we should be aware of about Level3? FWIW, the other facilities we're looking at are Digital Island and Exodus. Any others that would be recommended? Any insight would be greatly appreciated. If you answer offlist then I can summarize later in the week. (Without your name if you'd prefer that). - ask -- ask bjoern hansen, http://ask.netcetera.dk/ !try; do();

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OT - Need Bell South Contact
by Dee McKinney 19 Jun '01

19 Jun '01

Anyone on the list working for the IP side of Bell South here ? Please contact me off list. Thanks. dmckinney(a)wcicable.com

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Routing Table inconsistencies
by Marshall Eubanks 19 Jun '01

19 Jun '01

Hello All; We had a problem with a domain with two different AS paths in the BGP table, so I wrote a script to look for such problems. There are two prefixes in the current MBGP tables here with such problems : Date of BGP Dump Mon Jun 18 15:39:46 EDT 2001 ROUTING INCONSISTENCY Detected for Prefix = 198.9.201.0 : *> 198.9.201.0 160.81.38.225 75 0 1239 10888 i * 204.147.129.89 0 145 24 i ROUTING INCONSISTENCY Detected for Prefix = 198.9.202.0 : * 198.9.202.0 204.147.129.89 0 145 24 i *> 160.81.38.225 75 0 1239 10888 i And a total of 488 prefixes in the BGP tables with such problems !!!!! The complete lists are contained in http://www.multicasttech.com/status/mbgp.inconsistency and http://www.multicasttech.com/status/bgp.inconsistency I could update these regularly if there was any demand. I may be obtuse, but I cannot see how this could be a good thing. Regards Marshall Eubanks T.M. Eubanks Multicast Technologies, Inc 10301 Democracy Lane, Suite 410 Fairfax, Virginia 22030 Phone : 703-293-9624 Fax : 703-293-9609 e-mail : tme(a)multicasttech.com http://www.on-the-i.com Test your network for multicast : http://www.multicasttech.com/mt/ Check the status of multicast in real time : http://www.multicasttech.com/status/index.html

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Re: opinions on routers/switches for parallel clusters
by Michael C . Wu 19 Jun '01

19 Jun '01

On Mon, Jun 18, 2001 at 11:15:10AM -0500, keichii(a)freebsd.org scribbled: Thank you all for your replies. Here is the result summed from the 21 emails that I received privately and publicly. It overwhelmingly leans towards one vendor. :) [Disclaimer: I am in no way associated with Extreme Networks.] BTW, just to clarify myself, we are not hostile towards Cisco. We currently use almost exclusively Cisco on our site. It's just that we did not think it to be necessary to be asking about a brand so well known to us and NANOG. Furthermore, we like to keep our minds open for other products. (There were people who suggested multiple choices.) Count Vendor ============================ 18 Extreme Networks (with load balancer being F5 Net) 4 Cisco 4 misc (Foundry, Riverstone) I also talked to the Extreme Networks sales engineer who responded to me in private. (I guess they know where to look for customers 8). ) She even offered a loaner before I asked. Extreme's pricing is at least less than half the Cisco price at retail, before mass purchase discounts. (The Cisco products also has less features at a higher price tag.) Adding in the extra load balancer and router costs, using Extreme is still extremely competitive in both price and functionality. -- +-----------------------------------------------------------+ | keichii(a)iteration.net | keichii(a)freebsd.org | | http://iteration.net/~keichii | Yes, BSD is a conspiracy. | +-----------------------------------------------------------+

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Re: Opinions about InterNAP
by Avi Freedman 19 Jun '01

19 Jun '01

In article <101513.154547.12017(a)avi.netaxs.com> you wrote: : Filters depend on where you get your allocation. We got 216.249.16.0/20 : from arin. Since we're above the swamp, we have a greater chance of : having any given /24 not be filtered. Shortly after we got the : allocation, I announced a single /24, and could cleanly traceroute to : machines on that subnet from points behind sprint, verio, C&W, worldcom, : etc. Had we been given an allocation from 65/8 or another block in : former-class-A space, we probably would've had problems. You'd have to announce the /24 on a separate link and make sure traffic came back to it. Or, stop announcing the /20. Hope this isn't insulting, just make sure the test is good :) : -j Avi

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