[Codel] ns2 simulations of sfq_codel

Kathleen Nichols nichols at pollere.com
Sun Jan 13 23:15:37 EST 2013


Sounds like you didn't add the variables to tcl/libns-default.tcl

On 1/13/13 7:57 PM, Anirudh Sivaraman wrote:
> Hi
> 
> I am using ns2 to simulate sfq_codel (code taken from
> https://github.com/dtaht/ns2/blob/master/queue/sfqcodel.cc). I
> modified codel.tcl
> (https://github.com/dtaht/ns2/blob/master/codel.tcl) to run sfq_codel.
> Specifically, I modified this line in codel.tcl :
> 
> $ns duplex-link $n0 $n1 $bw ${bdelay}ms CoDel
> 
> to
> 
> $ns duplex-link $n0 $n1 $bw ${bdelay}ms sfqCoDel
> 
> Things run fine, except I get these warnings :
> 
> warning: no class variable Queue/sfqCoDel::interval_
> 
> 	see tcl-object.tcl in tclcl for info about this warning.
> 
> warning: no class variable Queue/sfqCoDel::target_
> 
> warning: no class variable Queue/sfqCoDel::curq_
> 
> warning: no class variable Queue/sfqCoDel::d_exp_
> 
> warning: no class variable Queue/sfqCoDel::interval_
> 
> 	see tcl-object.tcl in tclcl for info about this warning.
> 
> warning: no class variable Queue/sfqCoDel::target_
> 
> warning: no class variable Queue/sfqCoDel::curq_
> 
> warning: no class variable Queue/sfqCoDel::d_exp_
> 
> Are these warnings safe to ignore or do they affect the simulation output ?
> 
> Anirudh
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