Re: TCP Acceleration

Dear Anjum,
You are opening up a whole topic here,

To make it simple for you , Please answer the below quieries

1) How many WAN sites you have including the main branch
2) Tell me the Bandwidth between them,
3) Are the using internet to connect to each other (as your last email is
showing that your sites connected VIA internet not a REAL WAN)
4) are they connected via SITE TO SITE VPN

tell me the above mentioned then I can tell you the bandwidth requirement

Please take the conversation offline from now on : )

Thanks

2009/6/13 Muhammad Anjum <ccie_at_starasiatv.com>

> Yes video is encoded, but the throughput between encoder (located in
> country A) and streaming server (located in country B) and these two
> location are connected through internet bandwidth.
>
> problem with the tcp is:
> - tcp is inherently slower than streaming
> - throughput affected by tcp window size
> - internet makes it worse - delays in ACKs
> - pre-session utilization limited
> - tcp slow-start and short sessions
> - congestion avoidance methods can hurt
>
> if we look on TCP ACKs
> 1. [client] <------- [server] server sends some packets to client
> 2. [4 packets sent to client] once a pre-determined number is sent, server
> stops sending - waits for ACKs of receipt
> 3. [client] ---------> [server] client acknowledges the 4 packets from the
> server. once receved server can send again. [1 packet sent to server]
>
> so potentially a tcp accelerator can have BIG windows and multiple streams.
>
> like I have one site A its windows size is 256kB and there are 2 streams so
> total throughput is 9.45Mbits/s
>
> and site B windows size is 64kB and 8 streams total throughput is
> 26.8Mbits/s
>
> If anyone can more elaborate it, will be more helpful and understandable.
>
> HTH
>
>
> --- On *Sat, 6/13/09, Abdul Waheed Ghaffar <a_w_ghaffar_at_hotmail.com>*wrote:
>
>
> From: Abdul Waheed Ghaffar <a_w_ghaffar_at_hotmail.com>
> Subject: RE: TCP Acceleration
> To: muhammad.nasim_at_gmail.com, ccie_at_starasiatv.com
> Cc: tfaria72_at_gmail.com, ccielab_at_groupstudy.com
> Date: Saturday, June 13, 2009, 11:21 AM
>
>
>
> Video is usually encoded/compressed regardless of Streaming (content sent
> in compressed form over the Internet and displayed by the viewer in real
> time) OR in any other format. So these devices will not really add any
> value,...just a thought.
>
> Thanks
> Abdul Waheed
>
> > From: muhammad.nasim_at_gmail.com
> > Date: Sat, 13 Jun 2009 09:02:37 +0300
> > Subject: Re: TCP Acceleration
> > To: ccie_at_starasiatv.com
> > CC: tfaria72_at_gmail.com; ccielab_at_groupstudy.com
> >
> > No issues I can mention
> > 1) Riverbed (on top )
> > 2) Juniper (2nd Choice but mostly become first choice as Juniper has
> > presence in countries better then RIVERBED)
> > 3) Cisco (Cisco is catching up quite aggressively after the newer version
> of
> > WAAS , software version I mean)
> >
> > The above is my selected vendors. There are also other
> >
> > 1) Packeeter (now own by Bluecoat)
> >
> > Also check the Gartner Magic Qudrant you can get other venbors as well
> but
> > above all are what mostly customers are using
> >
> >
> > BTW you are from which part of the world and how many branches you have
> on
> > the WAN you can get the demostration boxes from the vendor based on the
> size
> > of your network and also the seriousness of buying solution
> >
> > HTH
> >
> >
> > HTH
> >
> >
> > 2009/6/13 Muhammad Anjum <ccie_at_starasiatv.com>
> >
> > > Please mention some vendor names. And if u don't want to mention names
> on
> > > this list plz send me private msg.
> > >
> > > Thanks,
> > > Nadeem
> > >
> > >
> > > --- On *Sat, 6/13/09, Muhammad Nasim <muhammad.nasim_at_gmail.com>*
> wrote:
> > >
> > >
> > > From: Muhammad Nasim <muhammad.nasim_at_gmail.com>
> > > Subject: Re: TCP Acceleration
> > > To: "Anthony Faria" <tfaria72_at_gmail.com>
> > > Cc: "Muhammad Anjum" <ccie_at_starasiatv.com>, ccielab_at_groupstudy.com
> > > Date: Saturday, June 13, 2009, 10:42 AM
> > >
> > >
> > > Yup checkout the WAAS Appliance from Cisco, BTW there are other vendors
> > > also around which you can check : )
> > >
> > > HTH
> > >
> > >
> > > 2009/6/13 Anthony Faria <tfaria72_at_gmail.com<
> http://mc/compose?to=tfaria72@gmail.com>
> > > >
> > >
> > >> You can check out the waas.
> > >>
> > >> Tony
> > >>
> > >>
> > >> On Fri, Jun 12, 2009 at 10:22 PM, Muhammad Anjum <ccie_at_starasiatv.com
> <http://mc/compose?to=ccie@starasiatv.com>
> > >> > wrote:
> > >>
> > >>> Hi,
> > >>>
> > >>> I am looking for a WAN accelerator (1st option u mentioned).
> > >>>
> > >>> Thanks,
> > >>> Nadeem
> > >>>
> > >>>
> > >>> --- On Sat, 6/13/09, Muhammad Nasim <muhammad.nasim_at_gmail.com<
> http://mc/compose?to=muhammad.nasim@gmail.com>>
> > >>> wrote:
> > >>>
> > >>> From: Muhammad Nasim <muhammad.nasim_at_gmail.com<
> http://mc/compose?to=muhammad.nasim@gmail.com>
> > >>> >
> > >>> Subject: Re: TCP Acceleration
> > >>> To: "Muhammad Anjum" <ccie_at_starasiatv.com<
> http://mc/compose?to=ccie@starasiatv.com>
> > >>> >
> > >>> Cc: ccielab_at_groupstudy.com <
> http://mc/compose?to=ccielab@groupstudy.com>
> > >>> Date: Saturday, June 13, 2009, 9:26 AM
> > >>>
> > >>> Hi Nadeem,
> > >>> What exactly you are looking for ?
> > >>> Are you looking for
> > >>> 1) WAN Acceleration (tcp and other types of acceleration included)
> Cisco
> > >>> has
> > >>> solution
> > >>>
> > >>> 2) looking to enhance the video streaming or TCP which is published
> > >>> on the website and internet users want to access it (Cisco has
> solution
> > >>> for
> > >>> that as well)
> > >>> Give more inputs may be I can help
> > >>> Thank
> > >>>
> > >>> 2009/6/13 Muhammad Anjum <ccie_at_starasiatv.com<
> http://mc/compose?to=ccie@starasiatv.com>
> > >>> >
> > >>>
> > >>>
> > >>> Hi all,
> > >>>
> > >>>
> > >>> Is there any cisco solution for TCP acceleration for higher
> throughput's
> > >>> (for
> > >>> video streaming). like im using skyx, but it support 10mbps only.
> > >>>
> > >>> Provide me any any suggestion.
> > >>>
> > >>>
> > >>> Thanks,
> > >>>
> > >>> Nadeem
> > >>>
> > >>>
> > >>>
> > >>> Blogs and organic groups at http://www.ccie.net
> > >>>
> > >>>
> > >>>
> _______________________________________________________________________
> > >>>
> > >>> Subscription information may be found at:
> > >>>
> > >>> http://www.groupstudy.com/list/CCIELab.html
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>> --
> > >>> Muhammad Nasim
> > >>> Network Engineer
> > >>> Saudi Arabia
> > >>>
> > >>>
> > >>> Blogs and organic groups at http://www.ccie.net
> > >>>
> > >>>
> _______________________________________________________________________
> > >>> Subscription information may be found at:
> > >>> http://www.groupstudy.com/list/CCIELab.html
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>>
> > >>
> > >
> > >
> > > --
> > > Muhammad Nasim
> > > Network Engineer
> > > Saudi Arabia
> > >
> > >
> >
> >
> > --
> > Muhammad Nasim
> > Network Engineer
> > Saudi Arabia
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> >
> >
> >
> >
> >
>
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--
Muhammad Nasim
Network Engineer
Saudi Arabia
Blogs and organic groups at http://www.ccie.net