Re: Two switches in truking 802.1q with QoS

Hi, Edouard,

I am not sure how to do this outbound, but inbound can be done using a
hierarchical policy. The following example matches the trunk interface and
limits it to 150m.

mls qos
access-list 100 permit ip any any

class-map match-all IP
  match access-group 100
! this is the input trunk interface
class-map match-all TRUNK
  match input-interface g0/1

! this the child policy
policy-map VLAN120-POLICER
  class TRUNK
    police 150m 187500 exceed-action drop
! this is the parent policy with child nested below
policy-map VLAN120-PARENT
  class IP
   trust
   service-policy VLAN120-POLICER

interface g0/1
 mls qos vlan-based
interface Vlan120
 no ip address
 service-policy input VLAN120-PARENT

You could also use similar policies for the access ports, policing them
individually or as a range I believe. It would be nice if you could use an
aggregate police action in a class that matches all access ports but it is
not supported (in the IOS I tried).

Perhaps someone knows a better way to do outbound policing if possible...

On Tue, Dec 29, 2009 at 8:03 PM, Edouard Zorrilla <ezorrilla_at_tsf.com.pe>wrote:

> Hello,
>
> I have two switches 3560 in trunk 802.1q with 1000Mbps (1GEth.), there I
> have
> many vlans, one of them is vlan120.
>
> SWA ------------[802.1q at 1000Mbps]-------------------------SWB
>
> Do any one know how can I set up QoS there so that I limit the bandwith for
> vlan120 to 150Mbps ?. What I want is that vlan120 just go up to 150Mbps
> instead of taking all traffic in the trunk link (1000Mbps.) = Limit the
> amount
> of traffic entering the SW and limiting the amount of traffic leaving the
> SW
> at the same time.
>
> I am reading this configurations guide :
>
>
> http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12
> .2_52_se/configuration/guide/swqos.html
>
> But I do not figure out yet how can I acomplish it,
>
> Any help will be appreciated.
>
> Best Regards
>
>
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-- 
Bryan Bartik
CCIE #23707 (R&S, SP), CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com
Blogs and organic groups at http://www.ccie.net