[72198] in North American Network Operators' Group
RE: Peering point speed publicly available?
daemon@ATHENA.MIT.EDU (Stephen J. Wilcox)
Fri Jul 2 02:13:01 2004
Date: Fri, 2 Jul 2004 07:12:18 +0100 (BST)
From: "Stephen J. Wilcox" <steve@telecomplete.co.uk>
To: Cody Lerum <clerum@transaria.com>
Cc: Tony Li <tony.li@tony.li>, <erik@myevilempire.net>,
<nanog@merit.edu>, <network.support@oati.net>
In-Reply-To: <40C1034EE7C07D4587AE1F665D1B7E88013B08DF@gallatin.UPSTREAM.CUTTHROATCOM.COM>
Errors-To: owner-nanog-outgoing@merit.edu
Of course individual links are likely to have little difference .. it'll co=
me=20
down to a combination of the smallest link between source and destination a=
nd=20
the end to end latency.
Steve
On Thu, 1 Jul 2004, Cody Lerum wrote:
> Work with the network operators on each side of the link to determine the
> speed/load. For the most part if they really want your business, they wil=
l be
> able to provide something.
>=20
> The main reason link speed maybe important to me would serialization dela=
y on
> the circuit. OC-768 should be much lower latency than a T1...unless your =
are
> at the end of the queue :-)
>=20
> Latency is probably be your primary concern for large TCP transfers anywa=
y.
>=20
> -C
>=20
> -----Original Message-----
> From: Tony Li [mailto:tony.li@tony.li]=20
> Sent: Thursday, July 01, 2004 7:02 PM
> To: Cody Lerum
> Cc: erik@myevilempire.net; nanog@merit.edu; network.support@oati.net
> Subject: Re: Peering point speed publicly available?
>=20
>=20
> Is it really important to know the link speeds? What good does it do=20
> without knowing
> about the loading on those links?
>=20
> I would MUCH rather have an empty T1 than have to contend with a very=20
> oversubscribed OC-768.
>=20
> Tony
>=20
>=20
>=20
> On Jul 1, 2004, at 5:25 PM, Cody Lerum wrote:
>=20
> > DNS can sometimes give you a hint
> > =A0
> > [my nets snipped]
> > =A04 t3-1-2-0.ar2.SEA1.gblx.net (64.211.206.113)=A0 20.436 ms=A0 18.309=
ms=A0=20
> > 17.605 ms=A0=A0 <------------DS3
> > =A05=A0 so1-0-0-2488M.ar4.SEA1.gblx.net (67.17.71.210)=A0 17.607 ms=A0=
16.982=20
> > ms=A0 16.971 ms=A0 <-----OC-48
> > =A06=A0 p3-3.IR1.Seattle-WA.us.xo.net (206.111.7.5)=A0 17.864 ms=A0 19.=
491 ms=A0=20
> > 17.181 ms
> > =A07=A0 p5-1-0-3.RAR1.Seattle-WA.us.xo.net (65.106.0.197)=A0 17.723 ms=
=A0=20
> > 17.632 ms=A0 19.045 ms
> > =A08=A0 65.106.0.50 (65.106.0.50)=A0 38.133 ms=A0 39.197 ms=A0 49.961 m=
s=A0=A0=A0=A0=20
> > MPLS Label=3D101549 CoS=3D0 TTL=3D1 S=3D1
> > =A09=A0 p0-0-0d0.RAR1.SanJose-CA.us.xo.net (65.106.1.61)=A0 37.669 ms=
=A0=20
> > 38.572 ms=A0 36.517 ms
> > 10=A0 p7-0.DCR1.DC-SanJose-CA.us.xo.net (65.106.2.146)=A0 37.830 ms=A0=
=20
> > 36.524 ms=A0 37.743 ms
> > 11=A0 ge1-1.CDR2.DC-SanJose-CA.us.xo.net (209.220.168.10)=A0 38.428 ms=
=A0=20
> > 38.050 ms=A0 37.179 ms <-----Gig Ethernet
> > 12=A0 205.158.6.100.ptr.us.xo.net (205.158.6.100)=A0 40.179 ms=A0 39.78=
4 ms=A0=20
> > 39.444 ms
> > 13=A0 x218.cd9e6c.sj.concentric.net (205.158.108.218)=A0 39.188 ms=A0 3=
9.723=20
> > ms=A0 39.895 ms
> > =A0
> > However MPLS hidden hops may hide internal paths, and any connection=20
> > may be limited to slower than its line rate, and dns entries may be=20
> > old....
> > =A0
> > It's not publicly available at one source that I'm aware of, and if=20
> > there is they don't have my info.
> > =A0
> > -C
> > From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf=20
> > 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,
> >
> > =A0
> >
> > I have a question regarding information on my ISP's peering=20
> > relationships.=A0 Are the speeds of some or all peering relationships=
=20
> > public knowledge, and if so, where can I find this?=A0 By speed, I mean=
=20
> > bandwidth (DS3, OC3, 100Mbps, 1Gbps, etc.).=A0 I am trying to transfer=
=20
> > large stuff from my AS, through my ISP, through another ISP, to=20
> > another AS, and I'm wondering how fast the peering point is between=20
> > the ISPs.=A0 I'm working with my provider to get this information as we=
=20
> > speak, but I'm wondering if it's available publicly anywhere.=A0 If it=
=20
> > were, this could be one way to evaluate providers in the future, I=20
> > guess...
> >
> > =A0
> >
> > Erik Amundson
> > A+, N+, CCNA, CCNP
> > IT and Network=A0Manager
> > Open Access Technology Int'l, Inc.
> > Phone (763) 201-2005
> > Fax (763) 553-2813
> > mailto:erik.amundson@oati.net
> >
> > =A0
>=20
>=20
>=20
>=20
