Not to mention I have run across a few providers who skew their dns records to make their network look bigger/faster. Like I said it might get you a vague idea, but I wouldn’t place money on it. Just like GE might really be 10GE and FE might only be limited to 10Mbps. How often do you think IP's get moved around, and the DNS doesn't? -C -----Original Message----- From: Daniel Golding [mailto:dgolding@burtongroup.com] Sent: Thursday, July 01, 2004 8:02 PM To: Cody Lerum; erik@myevilempire.net; nanog@merit.edu Cc: network.support@oati.net Subject: Re: Peering point speed publicly available? Sometimes it can give a hint. However, if the ISPs are following the ³interface name² convention, you¹ll get something like P3-1-2, which just tells you its Packet Over SONET. That can mean anything from OC-3 to OC-192. ³ge² could mean 10 gige :) The "2488M" from glbx is nice, but not too common. It would be so nice if this were standardized between all providers. But naming conventions are really political - they sometimes provoke huge fights even within providers. -- Daniel Golding Network and Telecommunications Strategies Burton Group On 7/1/04 8:25 PM, "Cody Lerum" <clerum@transaria.com> wrote:

DNS can sometimes give you a hint

[my nets snipped] 4 t3-1-2-0.ar2.SEA1.gblx.net (64.211.206.113) 20.436 ms 18.309 ms 17.605 ms <------------DS3 5 so1-0-0-2488M.ar4.SEA1.gblx.net (67.17.71.210) 17.607 ms 16.982 ms 16.971 ms <-----OC-48 6 p3-3.IR1.Seattle-WA.us.xo.net (206.111.7.5) 17.864 ms 19.491 ms 17.181 ms 7 p5-1-0-3.RAR1.Seattle-WA.us.xo.net (65.106.0.197) 17.723 ms 17.632 ms 19.045 ms 8 65.106.0.50 (65.106.0.50) 38.133 ms 39.197 ms 49.961 ms MPLS Label=101549 CoS=0 TTL=1 S=1 9 p0-0-0d0.RAR1.SanJose-CA.us.xo.net (65.106.1.61) 37.669 ms 38.572 ms 36.517 ms 10 p7-0.DCR1.DC-SanJose-CA.us.xo.net (65.106.2.146) 37.830 ms 36.524 ms 37.743 ms 11 ge1-1.CDR2.DC-SanJose-CA.us.xo.net (209.220.168.10) 38.428 ms 38.050 ms 37.179 ms <-----Gig Ethernet 12 205.158.6.100.ptr.us.xo.net (205.158.6.100) 40.179 ms 39.784 ms 39.444 ms 13 x218.cd9e6c.sj.concentric.net (205.158.108.218) 39.188 ms 39.723 ms 39.895 ms

However MPLS hidden hops may hide internal paths, and any connection may be limited to slower than its line rate, and dns entries may be old....

It's not publicly available at one source that I'm aware of, and if there is they don't have my info.

-C

From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Erik Amundson Sent: Thursday, July 01, 2004 6:10 PM To: nanog@merit.edu Cc: network.support@oati.net Subject: Peering point speed publicly available?

NANOG,

I have a question regarding information on my ISP¹s peering relationships. Are the speeds of some or all peering relationships public knowledge, and if so, where can I find this? By speed, I mean bandwidth (DS3, OC3, 100Mbps, 1Gbps, etc.). I am trying to transfer large stuff from my AS, through my ISP, through another ISP, to another AS, and I¹m wondering how fast the peering point is between the ISPs. I¹m working with my provider to get this information as we speak, but I¹m wondering if it¹s available publicly anywhere. If it were, this could be one way to evaluate providers in the future, I guessŠ

Erik Amundson A+, N+, CCNA, CCNP IT and Network Manager Open Access Technology Int'l, Inc. Phone (763) 201-2005 Fax (763) 553-2813 mailto:erik.amundson@oati.net