Table 318: Diffserv Policy Configuration Fields
Field
Description
Policy
The name of the policy. To add a class to the policy, remove a class from the
policy, or configure the policy attributes, you must first select its name from the
menu.
Type
The traffic flow direction to which the policy is applied.
Class
The DiffServ class or classes associated with the policy. The policy is applied to a
packet when a class match within that policy-class is found.
Policy Attribute Details
The policy attribute types and their associated values that are configured for the
policy.
Assign Queue
Select this option to assign matching packets to a traffic queue. Use the Queue
ID Value field to select the queue to which the packets of this policy-class are
assigned.
Drop
Select this option to drop packets that match the policy-class.
Select this option to mark all packets in a traffic stream with the specified Class
of Service (CoS) queue value. Use the Class of Service field to select the CoS
value to mark in the priority field of the 802.1p header (the only tag in a single
tagged packet or the first or outer 802.1Q tag of a double VLAN tagged packet).
If the packet does not already contain this header, one is inserted.
Mark Secondary CoS
Select this option to mark all packets in a traffic steam with the specified
secondary CoS queue number. Use the Class of Service field to select the CoS
value to mark in the priority field of the 802.1p header in the secondary (inner)
802.1Q tag of a double VLAN tagged packet. If the packet does not already
contain this header, one is inserted.
Mark IP DSCP
Select this option to mark all packets in the associated traffic stream with the
specified IP DSCP value. After you select this option, use one of the following
fields to configure the IP DSCP value to mark in packets that match the policy-
class:
•
IP DSCP Keyword – The IP DSCP keyword code that corresponds to the IP
DSCP value. If you select a keyword, you cannot configure an IP DSCP Value.
•
IP DSCP Value – The IP DSCP value.
Mark IP Precedence
Select this option to mark all packets in the associated traffic stream with the
specified IP Precedence value. After you select this option, use the IP Precedence
Value field to select the IP Precedence value to mark in packets that match the
policy-class.
Mirror Interface
Select this option to copy the traffic stream to a specified egress port (physical
or
) without bypassing normal packet forwarding. This action can occur in
addition to any marking or policing action. It may also be specified along with a
queue assignment. Use the Interface menu to select the interface to which
traffic is mirrored.
Configuring Quality of Service
ExtremeSwitching 200 Series: Administration Guide
325