Cisco Systems 3750E manual Traffic by Using Class Maps section on, 36-56

Chapter 36 Configuring QoS

Configuring Standard QoS

•The hierarchical policy map is attached to the SVI and affects all traffic belonging to the VLAN. The actions specified in the VLAN-level policy map affect the traffic belonging to the SVI. The police action on the port-level policy map affects the ingress traffic on the affected physical interfaces.

•When configuring a hierarchical policy map on trunk ports, the VLAN ranges must not overlap. If the ranges overlap, the actions specified in the policy map affect the incoming and outgoing traffic on the overlapped VLANs.

•Aggregate policers are not supported in hierarchical policy maps.

•When VLAN-based QoS is enabled, the switch supports VLAN-based features, such as the VLAN map.

•You can configure a hierarchical policy map only on the primary VLAN of a private VLAN.

•When you enable VLAN-based QoS and configure a hierarchical policy map in a switch stack, these automatic actions occur when the stack configuration changes:

–When a new stack master is selected, the stack master re-enables and reconfigures these features on all applicable interfaces on the stack master.

–When a stack member is added, the stack master re-enables and reconfigures these features on all applicable ports on the stack member.

–When you merge switch stacks, the new stack master re-enables and reconfigures these features on the switches in the new stack.

–When the switch stack divides into two or more switch stacks, the stack master in each switch stack re-enables and reconfigures these features on all applicable interfaces on the stack members, including the stack master.

	Beginning in privileged EXEC mode, follow these steps to create a hierarchical policy map:
	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	class-map [match-all match-any]	Create a VLAN-level class map, and enter class-map configuration
	class-map-name	mode. For information about creating a class map, see the “Classifying
		Traffic by Using Class Maps” section on page 36-49.
		By default, no class maps are defined.
		• (Optional) Use the match-allkeyword to perform a logical-AND
		of all matching statements under this class map. All match criteria
		in the class map must be matched.
		• (Optional) Use the match-anykeyword to perform a logical-OR of
		all matching statements under this class map. One or more match
		criteria must be matched.
		• For class-map-name, specify the name of the class map.
		If neither the match-allor match-anykeyword is specified, the default
		is match-all.
		Note Because only one match command per class map is supported,
		the match-alland match-anykeywords function the same. See
		the “Creating Named Standard and Extended ACLs” section on
		page 34-15for limitations when using the match-alland the
		match-any keywords.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
36-56	OL-9775-02