Re: RPR perf: My thoughts

["Shahid Akhtar" <sakhtartx@xxxxxxxx>]

Title: RPR perf: My thoughts

Khaled and Harry,

 

Are we assuming self-similar data traffic for the simulations or some version of Poisson based traffic. Most internet traffic is TCP based which has been proven to be self-similar.

 

The problem with simulating self-similar traffic (since it has infinite variance) is that the simulations do not converge.

 

There are solutions via some analytical methods, but then the performance would be done mostly analytically.

 

Regards,

 

Shahid Akhtar

Cyras Systems

----- Original Message -----

From: Harry Peng

To: khaledamer@xxxxxxx

Cc: Changcheng Huang (E-mail) ; Reflector RPRSG (E-mail)

Sent: Thursday, January 25, 2001 2:12 PM

Subject: RPR perf: My thoughts

Khaled:
<<Performance Ad Hoc Proposal.ppt>>

At last......As promised from last week's meeting.

Attached is some charts that capture to what we discussed over lunch.
As you can see it addresses Raj's request for cut-through versus store and forward.

You are welcome to modified the chart.
I'm basically requesting a need for a common test harness.
We need sponsors for the harness modules.

I've also tried to summarize the different RPR MAC proposals.
We can seek each proposal's supporter to do the simulation for each proposal.

Follow your guideline on traffic profile and metric we shall have a good platform for comparing the
different proposals.

I don't see how we can compare the results if we do not set a common simulation framework
for each RPR node.

Comments.....

Regards,

Harry