Cisco Catalyst 4500 Series Software Configuration Guide

44-55
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 44 Configuring Quality of Service
Configuring QoS on a Standalone Supervisor Engine 6-E/6L-E or Supervisor Engine 7-E/7L-E/8-E
table-map table-map1
map from 0 to 1
map from 2 to 3
exit
The following table lists the traffic attributes for which a to-from relationship can be established using
the table map.
The following is an example of a policy map (policy2) configured to use the table map (table-map1)
created earlier:
Policy map policy
class class-default
set cos dscp table table-map
exit
In this example, a mapping relationship was created between the CoS attribute and the DSCP attribute
as defined in the table map.
For information on configuring a policy map to use a table map, “Configuring a Policy Map” section on
page 44-50.
The final task is to attach the policy map to the interface. For information on attaching the policy map
to the interface, see the “Attaching a Policy Map to an Interface” section on page 44-51.
Marking Action Drivers
A marking action can be triggered based on one of the two QoS processing steps.
Classification based: In this case, all the traffic matching a class is marked using either explicit or
tablemap based method. This method is referred to as unconditional marking.
Policer result-based: In this case, a class of traffic is marked differently based on the policer result
(conform/exceed/violate) applicable to that packet. This method is referred to as conditional
marking.
Traffic Marking Procedure Flowchart
Figure 44-5 illustrates the order of the procedures for configuring traffic marking.
Table 44-5 Traffic Attributes for Which a To-From Relationship Can Be Established
The “To” Attribute The “From” Attribute
Precedence CoS, QoS group, DSCP, Precedence
DSCP COS, QoS group, DSCP, Precedence
CoS DSCP, QoS group, CoS, Precedence

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E