Re: [ns] RED/ECN -- A bug??

[Tan Koan-Sin <freedom@csie.nctu.edu.tw>]

Yes. it is correct. The following is from RFC 2481
....
   First, ECN-Capable routers will only mark packets (as opposed to
   dropping them) when the packet marking rate is reasonably low. During
   periods where the average queue size exceeds an upper threshold, and
   therefore the potential packet marking rate would be high, our
   recommendation is that routers drop packets rather then set the CE
   bit in packet headers.
....

On Tue, Nov 06, 2001 at 04:20:58PM +0800, Liaw Yong Shyang wrote:
> Hi,
> 
> I am using ns 2.1b8a.
> 
> I am testing RED with ECN.  I found that when the average queue length > 
> maxthresh, instead of marking the packets with CE, it is being dropped.  Is 
> this correct for RED with ECN??
> 
> Thanks.
>