Re: 3560 qos egress queue

Karim is abslolutely right !
1) Shape ..... then share ..
2) Shape is inverse percentage

For one of the best writeup on this topic ; please refer to :

http://blog.ine.com/2008/06/26/quick-notes-on-the-3560-egress-queuing/

Best Regards
Gaurav Madan
CCIE # 23863

On Sat, Jul 25, 2009 at 8:04 AM, abderrahim sadki<a_sadki1_at_hotmail.com> wrote:
> yes i think ur right thanks!
>
>> Date: Fri, 24 Jul 2009 19:02:56 +0300
>> Subject: Re: 3560 qos egress queue
>> From: karim.jamali_at_gmail.com
>> To: a_sadki1_at_hotmail.com; ccielab_at_groupstudy.com
>>
>> Hi there,
>>
>> As far as i know this configuration will work as follows:
>> First Shaped mode will override shared mode for queue 1, which means that
>> queue 1 will be shaped to a maximum of 1/25 of interface bandwidth (1G in
>> our case) = 1/25 * 1G = 40 Mbps.
>> Then what happens is the following:
>> Remaining BW = Total Interface Bandwidth - Shaped Amount for queue 1 = 1 G
> -
>> 40 Mbps = 960 Mbps
>> This amount will be divided among the three remaining queues according to
>> the weights 20/25/25.
>> Queue 2 will get : 20/65 * (Remaining)
>> Queue 3 will get : 25/65 *(Remaining)
>> Queue 4 will get : 25/65 * (Remaining)
>>
>> This is far as i know.Please correct me if i am wrong.
>>
>>
>>
>> On Fri, Jul 24, 2009 at 6:28 PM, abderrahim sadki
> <a_sadki1_at_hotmail.com>wrote:
>>
>> > hi,
>> >
>> > I just want to confirm my understanding.
>> >
>> > With the following configuration:
>> >
>> > Switch(config)# interface gigabitethernet0/1
>> > Switch(config-if)# srr-queue bandwidth shape 25 0 0 0
>> > Switch(config-if)# srr-queue bandwidth share 30 20 25 25
>> >
>> > queue1 will get 25/( 25+20+25+25)
>> > queue2 will get 20/( 25+20+25+25)
>> > queue 3 will get 25/( 25+20+25+25)
>> > queue 4 will get 25/( 25+20+25+25)
>> >
>> > queue1 will be in shaped mode whereas the other queues will be shared
> mode.
>> >
>> > is it correct?
>> > Abderrahim
>> >
>> > _________________________________________________________________
>> > Share your memories online with anyone you want.
>> >
>> >
> http://www.microsoft.com/middleeast/windows/windowslive/products/photos-share
>> > .aspx?tab=1
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> > _______________________________________________________________________
>> > Subscription information may be found at:
>> > http://www.groupstudy.com/list/CCIELab.html
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
>> --
>> KJ
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>>
>>
>>
>>
>>
>>
>>
>
> _________________________________________________________________
> Drag n drop Get easy photo sharing with Windows Live Photos.
>
> http://www.microsoft.com/windows/windowslive/products/photos.aspx
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Mon Jul 27 2009 - 14:15:18 ART