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.
ip address 10.0.0.1 255.255.255.0
no ip unreachables
no ip proxy-arp
ip accounting output-packets
encapsulation dot1Q 101
ip address BGP_subclass_A.1 255.255.255.0
encapsulation dot1Q 102
ip address BGP_subclass_B.1 255.255.255.0
encapsulation dot1Q 219
ip address ISP_1_IP 255.255.255.224
no ip redirects
encapsulation dot1Q 401
ip address ISP_2_IP 255.255.255.252
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?
- mark the traffic from Linux GW with DSCP AF41 (to be mentioned that there's no other marked traffic)
- as I read the marking will not be altered if it runs on L2 trunks, so it will reach my 7609; there I ll create a class map for all the AF 41 traffic and then a policy map to prioritize the traffic.
- how is it better to do the prioritize ? (I remember you that I need this for all the traffic protocols coming from one single IP address) Simply to reserve some BW using bandwidth command or to use priority command?
- where should I apply the service policy ? On the subinterface or on the interface itself?
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