Re: TCP Acceleration

Why take it offline???

Sent from my iPhone

On Jun 12, 2009, at 11:58 PM, Muhammad Nasim
<muhammad.nasim_at_gmail.com> wrote:

> 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
>>>>>>
>>>>>>
>>>>>>
>> _______________________________________________________________________
 

>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Muhammad Nasim
>>>>>> Network Engineer
>>>>>> Saudi Arabia
>>>>>>
>>>>>>
>>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>>
>>>>>>
>> _______________________________________________________________________
 

>>>>>> Subscription information may be found at:
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>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Muhammad Nasim
>>>> Network Engineer
>>>> Saudi Arabia
>>>>
>>>>
>>>
>>>
>>> --
>>> Muhammad Nasim
>>> Network Engineer
>>> Saudi Arabia
>>>
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
>>> _______________________________________________________________________
 

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>
>
> --
> Muhammad Nasim
> Network Engineer
> Saudi Arabia
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
 

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Received on Sat Jun 13 2009 - 13:30:50 ART