No Subject

[Vineet Gupta <vineet@pal.ece.iisc.ernet.in>]

hi all,
	i am trying to implement 2 priority levels(0 or 1) in one droptail
queue by the help of flow-id and by changing the deque() function in
droptail. inside the deque i start from the head() of the PacktQueue and
as soon as i get a higher  priority packet(flow-id=1)  i remove() it. if i
don't get any such packet then i call deque() to remove the packet at
head. but when i run my si,ulation the a message comes 

ns : scheduler going backward from time t1 to t2

where t2 < t1

on seeing the tracefile also i see that an old event t2 comes after the
entry of t1. moreover the trace file shows simulation time to be very
small and exits.

can anybody help me.

i think that since i am overpassing the low priority packets before  the
1st high priority packet thats why .... . i think i will have to change
the scheduled time of the other packets . 


somebody please tell me how to overcome this problem.




VINEET KUMAR GUPTA
B-TECH PART-IV
DEPTT. OF COMP. SC. AND ENGG.
INSTITUTE OF TECHNOLOGY
BANARAS HINDU UNIVERSITY
VARANASI , INDIA