[ns] bugs of tcp-Vegas in ns

["Huike (Victor) Li" <huike@ee.mu.oz.au>]

Hello, seems fewer and fewer person are looking at Vegas now. From the
latest version of NS downloaded, there may be two bugs for tcp-vegas.

1, wnd_init_option_ is not correctly set in tcp-vegas.cc, the initial
value should be 2.
2, this problem exsited in former version of ns too. tcp-vegas.cc can
never capture a ECN bit though it has part of the code in reacting to
ECN. To solve this, we need modify VegasTcpAgent::output(), to make
ect() work, and also, some relevant changes should be done at tcp-sink.cc.

I have modified them but don't have time to validate it these weekes,
hopefully, I will do it next month. Any suggestion is highly appreciated.

Huike (Victor) Li

Department of EEE
University of Melbourne
Victoria 3051
Australia
Tel: +61 3 9344 9201
Fax: +61 3 9344 9188



On Mon, 5 Jun 2000, Huike (Victor) Li wrote:

> Greeting all,
> 
> I am doing some simulation on TCP over wireless. Usually, for a bottleneck
> link, we can set a link algorithm such as RED for congestion control, but
> for wireless stuff, 'cause it is not a "link" between the mobile user and
> basestation, this basestation is used as a router, can you kindly tell me
> how to set this basestaion to adopt link algorithm such as RED?
> 
> Thanks,
> 
> Huike (Victor) Li
> 
> Department of EEE
> University of Melbourne
> Victoria 3051
> Australia
> Tel: +61 3 9344 9201
> Fax: +61 3 9344 9188
> 
> 
> 
> 
> 
> 
>