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Ingress Classification Policies
Classification Criteria
IP RTP
ACL
Table 2: Supported RFCs
RFC
RFC 2474
Ingress Classification Policies
You use classification to partition traffic into classes. You classify the traffic based on the packet property
(CoS field) or the packet header fields that include IP precedence, Differentiated Services Code Point (DSCP),
and Layer 2 to Layer 4 parameters. The values used to classify traffic are called match criteria.
Traffic that fails to match any class is assigned to a default class of traffic called class-default.
Licensing Requirements for Classification
This feature does not require a license. Any feature not included in a license package is bundled with the Cisco
NX-OS system images and is provided at no extra charge to you. For a complete explanation of the Cisco
NX-OS licensing scheme, see the Cisco NX-OS Licensing Guide.
Configuring Classification
Configuring Class Maps
You can create or modify a class map with the class-map command. The class map is a named object that
represents a class of traffic. In the class map, you specify a set of match criteria for classifying the packets.
You can then reference class maps in policy maps.
Note
The class map type default is type qos and its match criteria default is match-all.
Cisco Nexus 5000 NX-OS Quality of Service Configuration Guide, Release 5.1(3)N2(1)
8
Description
Identify applications using Real-time Transport
Protocol (RTP) by UDP port number range.
Traffic is classified by the criteria defined in the
access control list (ACL).
Title
Definition of the Differentiated Services Field (DS
Field) in the IPv4 and IPv6 Headers
Configuring Classification
OL-26657-01
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