Re: TCP Window Scaling issue

[Larry Sheldon <LarrySheldon () cox net>]

On 7/24/2014 11:51 AM, Zach Hill wrote:
> Also just to reiterate I would lean more heavily on something fishing in
> the WAN cloud if all traffic from Site 1 to Site 2 were not seeing tcp
> window scaling properly, however it's only for Server A that is seeing
> this. Server A is able to properly TCP window scale for any local traffic.
>
>
> On Thu, Jul 24, 2014 at 12:47 PM, Zach Hill <zach.reborn () gmail com> wrote:
>
> > Hi Machael,
> >
> > Let me setup another packet capture at each side to see if the initial
> > packets are being modified at all.
> >
> > Thanks,
> >
> >
> > On Thu, Jul 24, 2014 at 12:39 PM, Michael Brown <michael () supermathie net>
> > wrote:
> >
> > > On 14-07-24 12:30 PM, Zach Hill wrote:
> > > > 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
> > > I blame the cloud.
> > >
> > > Dump the actual packets as they leave Server A and arrive at Server B
> > > (and vice-versa!). Does it get modified en route?
> > >
> > > M.
> > >
> > > --
> > > Michael Brown            | The true sysadmin does not adjust his behaviour
> > > Systems Administrator    | to fit the machine.  He adjusts the machine
> > > michael () supermathie net  | until it behaves properly.  With a hammer,
> > >                           | if necessary.  - Brian


--
Requiescas in pace o email           Two identifying characteristics
                                        of System Administrators:
Ex turpi causa non oritur actio      Infallibility, and the ability to
                                        learn from their mistakes.
                                          (Adapted from Stephen Pinker)