[olug] Network performance analysis

Rob Townley rob.townley at gmail.com
Thu Nov 20 14:22:13 CST 2014


i feel your pain.

Keep in mind "slowness" can be caused at many layers of the network.

-physical tests to verify Cat6 compliance from (PC) patch cable to wall
plate thru cable run back to patch panel thru another patch cable ( network
switch).  This could be an electrician with a ~$2500.00? Cat6 tester.  $per
wall plate

-firmware on NIC / motherboard

-device driver version

-10Mbps half-duplex vs 1000Mbps FullDuplex


-vPro / IPMI

-IPv6 vs IPv4 issues

-DNS slowness or timing out


-wireless channel (1 ,6, 11)
On Nov 20, 2014 12:20 PM, "Bill Brush" <bbrush at gmail.com> wrote:

> Hello all.
> I don't post much, but I've been lurking around here for many years.
> I'm looking for help investigating complaints that our network is
> "slow".  I have a rudimentary knowledge of doing packet captures, and
> the basics, but an in-depth investigation is beyond my current skills.
> I inherited this network a couple years ago, and I will freely admit
> that prior to this I had never had to worry about my infrastructure so
> I have not checked for pre-existing issues.
> So is anyone in the Omaha area an expert at network analysis?  If it's
> your day job we can discuss your hourly rates.
> Thanks!
> Bill
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