traffic class is to use the match class-map
command. To combine match-any and match-all characteristics
into a single class, a traffic class created with the match-any
instruction must use a class configured with the match-all
instruction as a match criterion (through the match class-map
command), or vice versa. These next two examples help
illustrate the concept. Example: Nested Traffic Class for
Maintenance
In the following example, the traffic
class called class1 has the same characteristics as traffic
class called class2, with the exception that traffic class
class1 has added a destination address as a match criterion.
Rather than configuring traffic class class1 line by line, a
user can enter the match class-map class2 command. This command
allows all of the characteristics in the traffic class called
class2 to be included in the traffic class called class1, and
the user can simply add the new destination address match
criterion without reconfiguring the entire traffic class.
Router(config)# class-map match-any class2
Router(config-cmap)# match protocol ip
Router(config-cmap)# match qos-group 3
Router(config-cmap)# match access-group 2
Router(config-cmap)# exit Router(config)# class-map
match-all class1
Router(config-cmap)# match
class-map class2
Router(config-cmap)# match
destination-address mac 1.1.1
Router(config-cmap)#
exit Example: Nested Traffic Class to Combine
match-any and match-all Characteristics in One Traffic
Class
The following example shows how to combine the
characteristics of two traffic classes, one with match-any and
one with match-all characteristics, into one traffic class with
the match class-map command. The result of traffic class class3
requires a packet to match one of the following three match
criteria to be considered a member of traffic class class4: IP
protocol and QoS group 4, destination MAC address
00.00.00.00.00.00, or access group 2. In this example, only the
traffic class called class4 is used with the traffic policy
called policy1. Router(config)# class-map match-all
class3
Router(config-cmap)# match protocol
ip
Router(config-cmap)# match qos-group 4
Router(config-cmap)# exit Router(config)# class-map
match-any class4
Router(config-cmap)# match
class-map class3
Router(config-cmap)# match
destination-address mac 1.1.1
Router(config-cmap)#
match access-group 2
Router(config-cmap)#
exit Router(config)# policy-map policy1
Router(config-pmap)# class class4
Router(config-pmap-c)# police 8100 1500 2504 conform-action
transmit exceed-action set-qos-transmit 4
Router(config-pmap-c)# exit
Content 3.4
Using MQC for Implementing QoS 3.4.8 MQC
Example The example in Figure shows a network using
interactive traffic and VoIP with an applied Cisco MQC
configuration. In this scenario, the office site connects over
a low-speed WAN link to the central site. Both sites are
equipped with IP phones, PCs, and servers that run interactive
applications, such as terminal services. Because the available
bandwidth is limited, an administrator must implement an
appropriate strategy for efficient bandwidth use. The strategy
must meet the requirements of voice traffic’s need for high
priority, low delay, and constant bandwidth along the
communication path and interactive traffic’s need for bandwidth
and low delay. Classification requirements also affect the
strategy. Classification and policing of the important traffic
streams by applying traffic parameters such as priority,
queuing, and bandwidth, are the major elements of the traffic
policy that improve the overall quality. Finally, the traffic
policy is applied to the WAN interface of the routers. Figure
shows an example of the complex configuration tasks involved in
using Cisco MQC on the router Office.
Content 3.4
Using MQC for Implementing QoS 3.4.9 Basic
MQC Verification Commands To display and verify basic QoS
classes and policies configured by using the Cisco MQC, use the
commands listed in the MQC Verification Commands table. Figure
shows the command syntax. MQC Verification Commands
Command Description show class-map
Displays the configured classes show policy-map
Displays the configured policy show policy-map
interface Displays the applied policy map on an interface
Content 3.5 Implementing QoS with Cisco
SDM QoS Wizard 3.5.1 Configuring QoS with Cisco
SDM QoS Wizard Cisco Router and Security Device Manager
(SDM) allows you to easily configure routing, security, and QoS
services on Cisco routers while helping to enable proactive
management through performance monitoring. Whether you are
deploying a new router or installing Cisco SDM on an existing
router, you can now remotely configure and monitor these
routers without using the Cisco IOS software CLI. The Cisco SDM
GUI helps people who are not expert users of Cisco IOS software
in day-to-day operations, provides easy-to-use smart wizards,
automates router security management, and assists them through
comprehensive online help and tutorials. Cisco SDM smart
wizards guide you step by step through router and security
configuration workflow by systematically configuring the LAN
and WAN interfaces, firewall, Network Address Translation
(NAT), intrusion prevention system (IPS), IPsec virtual
private network (VPNs) routing, and QoS. Cisco SDM smart
wizards can intelligently detect incorrect configurations and
propose fixes. Online help embedded within Cisco SDM contains
appropriate background information in addition to step-by-step
procedures to help you enter correct data in the Cisco SDM. In
the QoS configuration section of Cisco SDM, there are several
features when defining traffic classes and configuring QoS
policies in the network as summarized in Figure . Cisco SDM
supports a wide range of Cisco IOS software releases and is
available free on Cisco router models from the Cisco 830 Router
to the Cisco 7301 Router. Cisco SDM comes preinstalled on all
new Cisco 850 Series, Cisco 870 Series, Cisco 1800 Series,
Cisco 2800 Series, and Cisco 3800 Series Integrated Services
Routers. The Cisco SDM QoS wizard offers easy and effective
optimization of LAN, WAN, and VPN bandwidth and application
performance for different business needs (for example, voice
and video, enterprise applications, and web). There are three
predefined categories of business needs:
- Real-time: Voice over IP (VoIP) traffic and
voice-signaling traffic.
- Business-critical:
Business traffic important to a typical corporate environment.
Some of the protocols included in this traffic category are:
Citrix, SQLNet, Notes, LDAP, and Secure LDAP. Routing protocols
included in this category are egp, bgp, eigrp, and rip.
- Best-effort: Remaining traffic.
In
addition, the Cisco SDM QoS wizard supports NBAR, which
provides real-time validation of application use of WAN
bandwidth against predefined service policies as well as QoS
policing and traffic monitoring. Figure shows the main page of
Cisco SDM which consists of the following two sections:
- About Your Router: This section displays the
hardware and software configuration of the router.
- Configuration Overview: This section displays basic
traffic statistics.
There are two important icons in
the top horizontal navigation bar: - Configure
icon: Opens the configuration page.
- Monitor
icon: Opens the page where the status of the tunnels,
interfaces, and device can be monitored.
Content 3.5 Implementing QoS with Cisco SDM
QoS Wizard 3.5.2 Creating a QoS Policy
Figures to show the following seven steps that are used to
create a QoS policy using the Cisco SDM GUI: Step 1
Enter configuration mode by clicking Configure in the