Netgear XSM4324FS CLI Manual Software Version 12.x - Page 933

M4300 Intelligent Edge Series Fully Managed Stackable Switches b. Defining match criteria for a class. 2. Policy a. Creating and deleting policies b. Associating classes with a policy c. Defining policy statements for a policy/class combination 3. Service a. Adding and removing a policy to/from an inbound interface The DiffServ class defines the packet filtering criteria. The attributes of a DiffServ policy define the way the switch processes packets. You can define policy attributes on a per-class instance basis. The switch applies these attributes when a match occurs. Packet processing begins when the switch tests the match criteria for a packet. The switch applies a policy to a packet when it finds a class match within that policy. The following rules apply when you create a DiffServ class: • Each class can contain a maximum of one referenced (nested) class • Class definitions do not support hierarchical service policies A given class definition can contain a maximum of one reference to another class. You can combine the reference with other match criteria. The referenced class is truly a reference and not a copy since additions to a referenced class affect all classes that reference it. Changes to any class definition currently referenced by any other class must result in valid class definitions for all derived classes, otherwise the switch rejects the change. You can remove a class reference from a class definition. The only way to remove an individual match criterion from an existing class definition is to delete the class and re-create it. Note: The mark possibilities for policing include CoS, IP DSCP, and IP Precedence. While the latter two are only meaningful for IP packet types, CoS marking is allowed for both IP and non-IP packets, since it updates the 802.1p user priority field contained in the VLAN tag of the layer 2 packet header. diffserv This command sets the DiffServ operational mode to active. While disabled, the DiffServ configuration is retained and can be changed, but it is not activated. When enabled, DiffServ services are activated. Format Mode diffserv Global Config Quality of Service Commands 933 CLI Command Reference Manual