Re: [ns] simulation EF PHB in nortel diffserv

[Xuan Chen <xuanc@ISI.EDU>]

I think EF is supported by nortel's implementations. You may find the
documentation on their as well as the chapter on diffserv in ns manual is
helpful. Thanks.

-chen xuan


 On Wed, 4 Apr 2001, Sudhindra Suresh Bengeri wrote:

> Hi,
> 
> I want to simulate EF PHB using nortel's diffserv implementation.
> Specifically I want that packets violating their traffic profile to be
> dropped, ie, when a packet's codepoint is downgraded it be dropped. I
> don't want to change their implementation, hence am looking for doing this
> configuration via tcl scripts.
> 
> One way of doing it would be to use 2 queues, and use WRR, with a weight
> of 0 to the second queue. And add PBH entry to add a packet with the
> downgraded CP to the second queue. But this doesn't actually report
> dropped packets, only that packets are never actually transmitted.
> 
> Looking forward to your suggestions.
> 
> Thanks,
> Sudhin.
> 
> ****************** Sudhindra Suresh Bengeri ********************
> Graduate Research Assistant   | Home:                          |
> to Dr. George N. Rouskas      | 2110, Gorman St.,              |
> EGRC 454H, Computer Sci. dept.| Raleigh, NC - 27606            |
> NCSU, Raleigh, NC 27695       | Ph. (919) 852-1961             |
> (919)515-3655(P) / 515-7925(F)
> My web projection: http://www4.ncsu.edu/~ssbenger
> 
> 

-- 
Xuan Chen
USC/ISI