[Diffserv-interest] Diffserv gred problem

"Tiago Sousa" <tmas@dei.uc.pt> Mon, 24 April 2006 23:15 UTC

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From: "Tiago Sousa" <tmas@dei.uc.pt>
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Date: Tue, 25 Apr 2006 00:15:26 +0100
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Subject: [Diffserv-interest] Diffserv gred problem
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Hello to all


I am not sure if this mailing list is the better one to post my doubt, if
not please tell me which should I use.


My doubt is very simple:


I am using the GRED queuing discipline to implement the four AF classes with
three drop precedence each. The problem is that in two of my four routers
the command:


$tc qdisc add dev eth1 parent 4:1 gred setup DPs 3 default 3 grio


returns the follow error:


RTNETLINK answers: Invalid argument


This only happens in two of my four routers. What is more strange is that if
I change the default value to two and hence, I erase one DP, the error


Could you tell me why these two routers only permit to have 2 drop
precedence. How can I solve this problem?


Thanks to all.


Tiago Sousa

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