Re: TCP Window Optiimization with LFN.

High Speed TCP has been created for this. There are modules w/in Cisco that
will support it. It really comes down to buffering. Even with some type of
WAN acceleration, you will need to touch EVERY device along the way,
including provider equipment. Depending on WAN service this could be close
to impossible... I would agree that local caching/deduplication will help
(RB Steelhead, WAAS). Riverbed Steelheads support HS-TCP so might be a good
fit. I am curious to see how TAC steers you.

Regards,

Marc

On Thu, Aug 16, 2012 at 11:39 AM, Shaughn <maniac.smg_at_gmail.com> wrote:

> Upgrade your WAAS boxes ;)
>
> *Cisco sales hat on*
>
> CCIE # 23962 (SP)
>
> Sent from my iPhone
>
> On 16 Aug 2012, at 8:07 PM, JB Poplawski <jb.poplawski_at_gmail.com> wrote:
>
> > Good afternoon,
> >
> > My token question out to the group as I await TAC.
> >
> > I have a network with Gb links between sites. Connected like such:
> > Site A < 7ms > Site B < 71ms > Site C <9ms> Site D
> >
> > End to end latency between Site A and Site D is 69ms. My numbers above
> are
> > the average given from CLI.
> >
> > I've been reading on LFNs (Long Fat Networks) and basically I need to
> > optimize the TCP Window size (calculated to 8625KB).
> >
> > My question, where do I implement it?
> > Site A and Site D? Or Site B and Site C?
> >
> > If I implement on Site B and Site C, how does that impact Site C to Site
> D,
> > etc?
> >
> > Any ideas?
> >
> > We previously had MPLS connection with WAAS which optimized traffic. Now
> > since we're running Gb, we removed WAAS (our WAAS boxes were only rated
> to
> > 50Mbps).
> >
> > Any suggestions? Am I on the right path?
> >
> > Any help is greatly appreciated.
> > JB
> >
> >
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Received on Thu Aug 16 2012 - 12:10:23 ART