Is it really important to know the link speeds? What good does it do without knowing about the loading on those links? I would MUCH rather have an empty T1 than have to contend with a very oversubscribed OC-768. Tony On Jul 1, 2004, at 5:25 PM, Cody Lerum 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 ISP’s 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 I’m wondering how fast the peering point is between the ISPs. I’m working with my provider to get this information as we speak, but I’m wondering if it’s available publicly anywhere. If it were, this could be one way to evaluate providers in the future, I guess…
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