[c-nsp] QoS VLAN trunk Port

Arie Vayner (avayner) avayner at cisco.com
Sun Jul 20 15:06:19 EDT 2008


Ahmad,

Take a look at "Configuring CoS Mutation":
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/46sg/conf
iguration/guide/qos.html#wp1371466 

Arie

-----Original Message-----
From: Cheikh-Moussa Ahmad [mailto:acm at axians.de] 
Sent: Saturday, July 19, 2008 08:20 AM
To: Arie Vayner (avayner); cisco-nsp at puck.nether.net
Subject: AW: [c-nsp] QoS VLAN trunk Port

Hi Guys,



> In general, you enable "mls qos vlan-based" on the trunk, and apply
the
> qos policy on the SVI (interface vlan) - even without any L3 config on

> the SVI.
> 

For Qos this works very well. I have an aditionall requirement.
Now I have to change the Cos values on the trunk Port. 

So there is trunk between an Cisco Catalyst 4500 and a Juniper ERX.
I want to change the CoS Values for every Vlan in a different way.

For Example: VLAN 15 CoS =5
             VLAN 10 CoS =3
             VLAN 20 CoS =1

My idea was to enhance the current policy-map configuration with the
command "set cos x", but unfortunately the switch doesn't accept this
command, although it is documented in CCO. I checked the Feature
Navigator and IOS 12.2(40)SG IPBASE has the feature "Class Based
Ethernet CoS Matching & Marking (802.1p & ISL CoS)".

So any ideas, why I can not configure this on my cat4500 ?
Is there another way to achieve this ?

Regards,
 Ahmad




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