QoS - Per-Port Per-VLAN question

From: storage4mail (storage4mail@googlemail.com)
Date: Wed Aug 30 2006 - 17:01:09 ART

Here's a scenario for which I'd like your input on two given configurations
below (as to what's the difference),

Scenario:

Incoming traffic from a certain interface (y) in a switch that is assigned
to specific VLAN(x) needs to be marked with immediate precedence.

Config. 1:

ip cef

class-map CLASS1
    match access-group name VLANx

policy-map PM
    class CLASS1
        set ip precedence immediate

interface y
    service-policy input PM

ip access-list standard VLANx
    permit <VLANx prefix with inverse mask>

Config. 2:

ip cef

class-map CLASS1
    match access-group 1

class-map CLASS2
    match vlan x
    match class-map CLASS1

policy-map PM
    class CLASS2
        set ip precedence immediate

int y
    service-policy input PM

This archive was generated by hypermail 2.1.4 : Fri Sep 01 2006 - 15:41:59 ART