From: Tony Li (no email)
Date: Thu Jul 01 2004 - 21:02:06 EDT
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: [mailto:] On Behalf
> Of Erik Amundson
> Sent: Thursday, July 01, 2004 6:10 PM
> To:
> Cc:
> 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:
>
>
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