From: Arifur Rahman (arahman@cisco.com)
Date: Wed Oct 01 2003 - 14:35:22 GMT-3
Hi
thank you for response. I also think so. But following confused me
"You can configure WRED as part of the policy for a standard class or the
default class. The WRED random-detect command and the weighted fair
queueing (WFQ) queue-limit command are mutually exclusive for class policy.
If you configure WRED, its packet drop capability is used to manage the
queue when packets exceeding the configured maximum count are enqueued. If
you configure the WFQ queue-limit command for class policy, tail drop is used.
"
page 15
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_r/qrfcmd7.pdf
thanks - Arif
At 04:06 PM 10/1/2003 +0000, kasturi cisco wrote:
>Arif,
>
>My understanding is when u configure "queue-limit" it basically defines
>the size of the Q and max-# of packets that can be Qed. So when # packets
>arriving at interface exceeds the Q size configured there is "Tail drop"
>as packets get dropped.
>
>So to avoid "Tail drop" and its effect on TCP packets u configure
>random-detect. So they go together i guess. HTH.
>
>Anbody correct me if i am wrong.
>
>Good Luck,
>Kasturi.
>
> >From: Arifur Rahman >Reply-To: Arifur Rahman >To: ccielab@groupstudy.com
> >Subject: "queue-limit" and "random-detect" are mutually exclusive?
> >Date: Fri, 26 Sep 2003 23:00:32 -0700 > >Hi >I am confused with CCO doc,
>need your help. > >It says - "queue-limit" command enables tail drop
>(page 7) and >"random-detect" enables WRED (page 8). So my understanding,
>those >two should be mutually exclusive. Link of the doc >
> >http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/f
> qos_c/fqcprt2/qcfwfq.pdf
> > >But the same document (page 37) configured those two at the same
> >time. Anybody any explanation, please. > >Thank you >-Arif > >***Get
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