[103595] in North American Network Operators' Group
Re: Bandwidth issues in the Sprint network
daemon@ATHENA.MIT.EDU (Brian Raaen)
Tue Apr 8 09:54:12 2008
From: Brian Raaen <braaen@zcorum.com>
To: nanog@merit.edu
Date: Tue, 8 Apr 2008 09:49:03 -0400
In-Reply-To: <200804071506.34371.braaen@zcorum.com>
Errors-To: owner-nanog@merit.edu
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Currently there is not a proxy server in the network, although when using s=
ome=20
of the test on dslreports.com there is a message about compression being us=
ed=20
for the upload and to remove proxy settings. I have also been testing usin=
g=20
=46TP on a *nix server as well. Both the server and PC are connect to a Ci=
sco=20
2960 switch in the headend that is connected to the 7200 router. I can=20
transfer ftp at about 80Mbps between the PC and the server, so they are not=
=20
IO bound. The Site I am testing with is a ftp server located in a colo=20
facility that we use and has sufficient bandwidth. This circuit is clean i=
n=20
the sense of not having CRC, framing or other errors but this is a new=20
circuit and we have never gotten more than 5Mbps out of a single session=20
(flow/ip) across the wan. I would have to double check the mtu, but it is=
=20
currently the default.
=2D-=20
Brian Raaen
Network Engineer
braaen@zcorum.com
On Monday 07 April 2008, Brian Raaen wrote:
> I am currently having problems get upload bandwidth on a Sprint circuit. =
I=20
am=20
> using a full OC3 circuit. I am doing fine on downloading data, but=20
uploading=20
> data I can only get about 5Mbps with ftp or a speedtest. I have tested=20
> against multiple networks and this has stayed the same. Monitoring Cacti=
=20
> graphs and the router I do get about 30Mbps total traffic outbound, but=20
> individual (flows/ip?) test always seem limited. I would like to know if=
=20
> anyone else sees anything similar, or where I can get help. The assistan=
ce=20
I=20
> have gotten from Sprint up to this point is that they find no problems. =
Due=20
> to the consistency of 5Mbps I am suspecting rate limiting, but wanted to=
=20
know=20
> if I was overlooking something else.
>=20
> --=20
> Brian Raaen
> Network Engineer
> braaen@zcorum.com
>
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