Re: per vlan based qos classification/marking on 3560?

To add to this; the switch's main priority is to forward traffic in
hardware. Stats are second if at all sometimes.

Steve Lyons

On Thu, Sep 10, 2009 at 3:39 PM, Petr Lapukhov
<petr_at_internetworkexpert.com>wrote:

> Hi,
>
> In order to see QoS marking stats you need to use the command "show
> mls qos interface fastEthernet 0/x statistics " on _physical_
> interfaces. However, this command displays the aggregate stats for the
> port (incoming/outgoing) and might be confusing sometimes when you
> have multiple traffic flows. The "classic" MQC show commands (e.g.
> show policy-map interface) are not relevant when it comes to "MLS QoS"
> :) For more examples of traffic policing in 3550/3560 (including
> per-port/per-VLAN policing) you may check the following post:
>
>
> http://blog.internetworkexpert.com/2008/09/11/comparing-traffic-policing-features-in-the-3550-and-3560-switches/
>
> Also, a working alternative to monitoring the traffic marking with
> show commands in the switch is configuring an ingress policy-map in
> the attached router (making sure the marked traffic goes to that
> router). Assign class-map matching the respective DSCP values to the
> policy-map, and you can see the packet statistics. I use this methond
> extensively for verifications in our VOL1 QoS section.
>
> HTH,
>
> --
> Petr Lapukhov, petr_at_INE.com
> CCIE #16379 (R&S/Security/SP/Voice)
>
> Internetwork Expert, Inc.
> http://www.INE.com <http://www.ine.com/>
> Toll Free: 877-224-8987
> Outside US: 775-826-4344
>
>
>
> 2009/9/10 Mark Matters <markccie_at_gmail.com>:
> > I was thinking about something else. I stand corrected.
> >
> > After reading what All from NJ posted I remember a discussion here that
> the
> > sho policy-map feature is broken on some switches. There was a thread on
> > this recently. If memory serves me correctly the switch might not
> display
> > the output your looking for but it is working.
> >
> >
> > On Thu, Sep 10, 2009 at 3:01 PM, Mark Matters <markccie_at_gmail.com>
> wrote:
> >
> >> Sorry I do not have an example handy. I'll try and find one.
> >>
> >> Take a look into vlan maps.
> >>
> >> It will be something like this.
> >> acl
> >> vlan-map
> >> vlan access filter.
> >>
> >>
> >> *As I learn more I remember less. I guess my token bucket is rather
> small.
> >> *
> >>
> >>
> >>
> >> On Thu, Sep 10, 2009 at 2:46 PM, CCIE League <ccieleague_at_ymail.com>
> wrote:
> >>
> >>> Experts,
> >>>
> >>> How to classify & mark all traffic for only vlan 99 with anything e.g.
> ip
> >>> prec 5 on a "3560" switch... SW4?
> >>>
> >>>
> >>> Setup:
> >>>
> >>> Vlan99----SW1-----isl trunk and ether channel-----SW4
> >>>
> >>>
> >>> - i have enabled "mls qos vlan-based" on the ALL trunk ports on SW4.
> Can't
> >>> use "mls qos vlan-based" on Port Channel?
> >>>
> >>> - SW4 can reach vlan99 via IGP... traffic destined to vlan 999 routed
> via
> >>> vlan 100.
> >>>
> >>> - I have created ACL ANY1 with permit any on SW4
> >>>
> >>> - Defined Class-map CM_ANY
> >>> match access-group name ANY1
> >>>
> >>> - Defined Policy-map PM_MARK
> >>> Class CM_ANY
> >>> set ip prece 5
> >>>
> >>> - Created int vlan 99 on SW4
> >>>
> >>> - Under int vlan 99
> >>> service-policy input PM_MARK
> >>>
> >>> #show policy-map interface vlan 99 doesn't show any packets marked!!
> All
> >>> is showing 0.
> >>>
> >>>
> >>> Have i missed anything? Any tricks?
> >>>
> >>>
> >>> Followed steps on:
> >>> http://blog.internetworkexpert.com/tag/per-vlan/
> >>>
> >>> I have also tried to use Class-map with "match interface f0/19 - f0/24
> as
> >>> mentioned in example 6.
> >>>
> >>> Ta,
> >>>
> >>>
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Received on Thu Sep 10 2009 - 17:38:58 ART