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QOS on a particular scenario

laf laf is offline
Junior Member
Join Date: Jun 2009
Posts: 4

I need to implement an QOS policy for the attached scenario.
Couple things to be mentioned:

All the connection to the router goes to a single Gigabit port; there s a trunk with the 3750 neighbor and on that port goes all the traffic in both directions.

interface GigabitEthernet3/1
description Management_class
ip address
no ip unreachables
no ip proxy-arp
ip accounting output-packets
interface GigabitEthernet3/1.101
description Our_company
encapsulation dot1Q 101
ip address BGP_subclass_A.1
interface GigabitEthernet3/1.102
description Clients_Internet
encapsulation dot1Q 102
ip address BGP_subclass_B.1

interface GigabitEthernet3/1.219
description ISP_1
encapsulation dot1Q 219
ip address ISP_1_IP
no ip redirects
interface GigabitEthernet3/1.401
description ISP_2
encapsulation dot1Q 401
ip address ISP_2_IP
no ip redirects

My goal is to prioritize the Internet for RED selected server, which is actually a Linux GW.

Please throw me some hints of how I could do this ? I was thinking to create an ACL to select the traffic which originates from my Linux GW and then use the class_traffic_ACL on a policy map to and apply a priority of 30;

My question is: where to apply the policy map? On the interface or on the sub_interface? Will it really work?

Or is it better to start marking the traffic of interest instead of using an ACL?
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