TCP Window Scaling issue

Zach Hill zach.reborn at gmail.com
Thu Jul 24 16:30:15 UTC 2014


Hi Tony. No firewall in the way.

Physical flow is as below.

Server A -> Nexus 7k -> 3845 router -> Sprint MPLS -> 3845 router -> Cisco
3750x stack -> Server B


On Thu, Jul 24, 2014 at 12:25 PM, Tony Finch <dot at dotat.at> wrote:

> Zach Hill <zach.reborn at gmail.com> wrote:
>
> > What's interesting is this is only affecting a single server and only
> > when traffic is going over the WAN circuit. Testing from Server A to any
> > server on it's network shows it is negotiating window scaling just fine.
>
> Check your firewall isn't buggering about with TCP options.
>
> Tony.
> --
> f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/
> South German Bight, East Humber: Northeasterly 4 or 5. Slight, occasionally
> moderate. Mainly fair. Moderate or good.
>


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