Re: shape on 3560

It will be using the bandwidth available to the SRR.

Cat2#sh mls qos interface fa0/18 queueing
FastEthernet0/18
Egress Priority Queue : disabled
Shaped queue weights (absolute) : 25 0 0 0
Shared queue weights : 25 25 25 25
The port bandwidth limit : 100 (Operational Bandwidth:100.0) <<<<<<<
The port is mapped to qset : 1

See the "port bandwidth limit" line - that's the BW available to the
SRR. It is derived from the negotiated speed by default, but can be
limited using "srr-queue bandwidth limit" command on the interface.

Now, let's see if configured bandwidth influences this in any way:

interface FastEthernet0/18
 bandwidth 50000
!

Cat2(config-if)#do sh mls qos int fa0/18 qu
FastEthernet0/18
Egress Priority Queue : disabled
Shaped queue weights (absolute) : 25 0 0 0
Shared queue weights : 25 25 25 25
The port bandwidth limit : 100 (Operational Bandwidth:100.0)
The port is mapped to qset : 1

Doesn't look like it does. If I change the bandwidth limit.

interface FastEthernet0/18
 bandwidth 50000
 srr-queue bandwidth limit 25
!

Cat2(config-if)#do sh mls qos int fa0/18 qu
FastEthernet0/18
Egress Priority Queue : disabled
Shaped queue weights (absolute) : 25 0 0 0
Shared queue weights : 25 25 25 25
The port bandwidth limit : 25 (Operational Bandwidth:27.28)
The port is mapped to qset : 1

Whenever in doubt - ask IOS :-)

--
Marko Milivojevic - CCIE #18427
Senior Technical Instructor - IPexpert
FREE CCIE training: http://bit.ly/vLecture
Mailto: markom_at_ipexpert.com
Telephone: +1.810.326.1444
Web: http://www.ipexpert.com/
On Sat, Aug 6, 2011 at 01:18, gp <gs4me2me_at_gmail.com> wrote:
> Hello experts,
>
>
>
> When doing shaping on 3560 interface does reference bandwidth is configured
> bandwidth with bandwidth command or negotiated speed?
>
>
>
> For example the switch port is connected on Fast Ethernet router interface
> and I configured bandwidth 1000000 on switch port.
>
> With srr-queue bandwidth shape 0 100 0 0, will queue 2 be shaped on 10 or 1
> Mbps?
>
>
>
> Thank you!
>
>
> 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