[c-nsp] TCP throughput /WAN delay simulation with back to back routers

[Ryan Wilkins]

You can also look at <http://www.linuxfoundation.org/en/Net:Netem>.

I use Netem to simulate satellite delay.  My configured delays are  
about 265 ms each way with 2 ms of variation.  Works really well and  
support is compiled directly recent Ubuntu Linux versions and probably  
many others as well.  I used a single box with 802.1q support on it  
and a couple of VLANs configured in bridging mode so the Linux box is  
just transparent to the devices under test.  Use a VLAN trunking  
capable switch to break out the VLANs to as many devices as you need.


Regards,

Ryan Wilkins

>
>> -----Original Message-----
>> From: Thilak T [mailto:thilak.t at gmail.com]
>> Sent: Wednesday, August 19, 2009 9:18 PM
>> To: cisco-nsp at puck.nether.net
>> Subject: [c-nsp] TCP throughput /WAN delay simulation with
>> back to back routers
>>
>> Hello Folks ,
>>
>> I am trying to test TCP throughput with different variables.
>> I want to simulate a delay of aprox 45msec between two test
>> PCs connected two bat to back routers . How do we introduce
>> an artificial delay where in the actual delay is on 2-3
>> msec.Using cisco routers.?
>>
>> Thilak
>>
>>
>
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