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Class-map Commands
Syntax
match ip dscp ip-dscp-value [ip-dscp-value][ip-dscp-value] [ip-dscp-value] [ip-
dscp-value][ip-dscp-value][ip-dscp-value][ip-dscp-value]
ip-dscp-value
Syntax of the "no" Form
To remove a specific IP DSCP value from a class map, use the no form of this command:
no match ip dscp ip-dscp-value [ip-dscp-value][ip-dscp-value][ip-dscp-value][ip-
dscp-value][ip-dscp-value][ip-dscp-value][ip-dscp-value]
Mode
Class‐map configuration:
Example
The following example shows how to configure the service policy called priority55 and attach
service policy priority55 to an interface. In this example, the class map ipdscp15 will evaluate all
packets entering interface F1 for an IP DSCP value of 15. If the incoming packet has been marked
with the IP DSCP value of 15, the packet will be treated with a high priority level.
XSR(config)#class-map ipdscp15
XSR(config-cmap<ipdscp15>)#match ip dscp 15
XSR(config)#policy-map priority55
XSR(config-pmap<priority55>)#class ipdscp15
XSR(config-pmap-c<ipdscp15>)#priority high 55
XSR(config)#interface fastethernet 1
XSR(config-if<F1>)#service-policy output priority55
match ip precedence
This command identifies IP precedence values as match criteria. Up to 4 precedence values can be
matched in one match statement. For example, if you wanted the IP precedence values of 0, 1, 2, or
3 (note that only one of the IP precedence values must be a successful match criterion, not all of the
specified IP precedence values), enter the
The ip‐precedence‐value arguments are used as markings only, they have no mathematical
significance. For instance, the ip‐precedence‐value of 2 is not greater than 1. The value simply
indicates that a packet marked with the ip‐precedence‐value of 2 is different than a packet marked
with the ip‐precedence‐value of 1. You define the treatment of these different packets by setting
QoS policies in Policy‐map Class configuration mode.
Syntax
match ip precedence ip-precedence-value [ip-precedence-value] [ip-precedence-
value][ip-precedence-value][ip-precedence-value][ip-precedence-value][ip-
precedence-value] [ip-precedence-value][ip-precedence-value]
ip-precedence-value
12-104 Configuring Quality of Service
Specifies a value from 0 to 63 to identify an IP DSCP value.
XSR(config-cmap-xx)#
match ip precedence 0 1 2 3
Specifies an IP precedence value from 0 to 7.
command.
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