System Administration Guide: IP Services

IPQoS Configuration for Systems With VLAN Devices

This section introduces a simple network scenario that shows how to implement IPQoS on systems with VLAN devices. The scenario includes two IPQoS systems, machine1 and machine2, that are connected by a switch. The VLAN device on machine1 has the IP address The VLAN device on machine2 has the IP address

The following IPQoS configuration file for machine1 shows a simple solution for marking traffic through the switch to machine2.

Example 37–2 IPQoS Configuration File for a System With a VLAN Device

fmt_version 1.0
action {
        module ipgpc
	      name ipgpc.classify

        filter {
                name myfilter2
                class myclass

        class {
                name myclass
                next_action mark4

action {
        name mark4
        module dlcosmk
        params {
                cos 4
                next_action continue
		global_stats true

In this configuration, all traffic from machine1 that is destined for the VLAN device on machine2 is passed to the dlcosmk marker. The mark4 marker action instructs dlcosmk to add a VLAN mark to datagrams of class myclass with a CoS of 4. The user-priority value of 4 indicates that the switch between the two machines should give controlled load forwarding to myclass traffic flows from machine1.