User Manual for the NETGEAR 7200 Series Layer 2 Managed Switch Software Version 4
Quality of Service (QoS) Commands
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202-10102-01, May 2005
sequence number. If the sequence number is not specified by the user, a
sequence number that is one greater than the highest sequence number
currently in use for this interface and direction is used. Valid range is (1
to 4294967295).
Differentiated Services (DiffServ) Commands
This chapter contains the CLI commands used for the QOS Differentiated Services (DiffServ)
package.
The user configures DiffServ in several stages by specifying:
1.
Class
•
creating and deleting classes
•
defining match criteria for a class.
Note:
The only way to remove an individual match criterion from an existing class definition is to
delete the class and re-create it.
2.
Policy
•
creating and deleting policies
•
associating classes with a policy
•
defining policy statements for a policy/class combination
3.
Service
•
adding and removing a policy to/from an inbound interface
Packets are filtered and processed based on defined criteria. The filtering criteria is defined by a
class. The processing is defined by a policy's attributes. Policy attributes may be defined on a per-
class instance basis, and it is these attributes that are applied when a match occurs.
Packet processing begins by testing the match criteria for a packet. A policy is applied to a packet
when a class match within that policy is found.
The following class restrictions are imposed by the DiffServ design:
•
Nested class support limited to:
–
Each class contains at most one referenced class
•
Hierarchical service policies not supported in a class definition
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