[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>
To: <diffserv-interest@ietf.org>
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
disappear.

 

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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