From: Russell Kelly \(rukelly\) (rukelly@cisco.com)
Date: Wed Jul 19 2006 - 12:51:18 ART
Yep -- 1 out of every 512 (in this case) will be dropped when max
threshold is reached --- 0 when 'right on' min threshold and some
magical linear calculation between the two :-)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott Morris
Sent: 19 July 2006 16:45
To: 'Sreenivasa Reddy.Kaki'; 'ELDHO PAUL'
Cc: ccielab@groupstudy.com
Subject: RE: WRED
Sorry, I beg to differ on this. Wrong direction.
The denominator specifically related to the max threshold. In your
command line what you are saying is that I want to start discarding at
the minimum threshold. By the time the maximum threshold is reached you
should be throwing away one of every 'x' packets. (the denominator) and
the router calculates a linear rise magically. (In other words, we mere
mortals don't have to calculate the rise)
" The mark probability denominator is the fraction of packets dropped
when the average queue depth is at the maximum threshold. For example,
if the denominator is 512, one out of every 512 packets is dropped when
the average queue is at the MAXIMUM threshold."
Check out:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios111/cc111/wr
ed.h
tm
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
JNCIE #153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
smorris@ipexpert.com
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sreenivasa Reddy.Kaki
Sent: Wednesday, July 19, 2006 11:07 AM
To: ELDHO PAUL
Cc: ccielab@groupstudy.com
Subject: Re: WRED
Hi Eldho,
There is a relation between minimum threshold and mark probability
denominator. The 'mark probability denominator' is the denominator for
the number of packets can be dropped when the average queue depth is at
the 'minimum threshold'. For example, if the denominator is 512, 1 out
of every
512 packets will be dropped when the average queue is at the 'minimum
threshold'.
I don't think there is any relation between 'max threshold' and 'mark
probability denominator'.
Cheers
Sreeni.
On 7/19/06, ELDHO PAUL <cciein2006@gmail.com> wrote:
>
> Hi,
>
> *random-detect precedence [**precedence] [minimum threshold] [maximum
> threshold] [mark probability denominator]*
>
> *>>In this synatx what is the purpose of mark probability
> denominator.*
>
> *>>Is there any relation ship between minthreshold maxthreshold and
> mrk probability denominator, just as in the case of Bc , CIR and
> Tc(Bc=CIR*Tc/1000)*
>
> Regards,
>
> Eldho
>
> *
> *
>
> ______________________________________________________________________
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>
-- ****************************************************** Sreenivasa Reddy.Kaki CCIE(QUAL),CCNP,CCNA IT Engineer-Customer Services CMC Limited Hyderabad Mobile:9849984014.
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