Cisco 10000 Series User Manual

2-7
Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 2 Classifying Traffic
Traffic Classification Using Class Maps
Router(config-cmap)# match ip dscp {ip-dscp-value
| afxy | csx | ef | default}
Specifies that the packet IP differentiated service code point
(DSCP) value must match one or more of the specified attributes.
ip dscp ip-dscp-value specifies the DSCP value to match on. Valid
values are from 0 to 63. You can specify up to 8 code point values,
using a space to separate consecutive values.
Instead of specifying a numeric ip-dscp-value, you can specify one
of the following reserved keywords:
• afxy indicates assured forwarding points. The first number (x)
indicates the AF class. Valid values are from 1 to 4. The
second number (y) indicates the level of drop preference
within each class. Valid values are from 1
(low drop) to 3 (high
drop).
• cs indicates class selector code points that are
backward-compatible with IP precedence. Valid values for x
are 1 through 7. The CS code points (CS1 through CS7) are
identical to IP precedence values 1 through 7.
• ef indicates expedited forwarding.
• default indicates best effort or DSCP 0.
For more information, see Table 7-4 on page 7-8.
Note In Cisco IOS Release 12.2(31)SB2 and later releases,
enhancements to the modular quality of service CLI
(MQC) allow you to classify packets on the L2TP access
concentrator (LAC) based upon the IP type of service
(ToS) bits in an embedded IP packet. The classification is
used to police ingress traffic according to the DSCP value.
Router(config-cmap)# match ip precedence
{ip-precedence-value | precedence-name}
Specifies that the packet IP precedence value must match one or
more precedence values or the name of the precedence.
ip-precedence-value is the IP precedence value to match on. Valid
values are from 0 to 7. You can specify up to 8 precedence values,
using a space to separate consecutive values.
precedence-name is the name of the IP precedence value.
For more information, see Table 7-2 on page 7-4.
Router(config-cmap)# match ip rtp
{lowest-udp-port range}
Specifies that the packet even UDP port value must be within the
specified range of port numbers. Only even-numbered ports are
matched because they carry the real-time data streams.
Odd-numbered ports are not matched because they only carry
control information.
lowest-udp-port is a number from 0 to 65535 and is the lowest
number in the range.
range specifies a number from 0 to 65535 and is the highest
number in the range.
Command Purpose

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English