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[ns] RED and DropTail?



hi, everyone,

Is there anybody knows in which cases DropTail can not be replaced by RED? 
How to make NS2 work after this change?

In fact, I asked a related question yesterday in this mailing list, however, 
no answer. In the wireless node, the ifq type is set as 
Queue/DropTail/PriQueue.  Seems that DropTail/PriQueue can be safely 
replaced by DropTail. The PriQueue only insert some special packets at the 
head of the queue. So, the problem should exist between RED and DropTail. 
Say, RED does not support some functions inside DropTail?

Thanks,

Shugong
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(212) 650-6791


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