Chapter 21 Configuring Qos; In This Chapter - Alcatel OmniSwitch 6624 Network Configuration Manual

Alcatel's QoS software provides a way to manipulate flows coming through the switch based on user-
configured policies. The flow manipulation (generally referred to as Quality of Service or QoS) may be as
simple as allowing/denying traffic, or as complicated as remapping 802.1p bits from a Layer 2 network to
ToS values in a Layer 3 network.
While policies may be used in many different types of network scenarios, there are several typical types
discussed in this chapter:
Basic QoS—includes traffic prioritization and bandwidth shaping
•
ICMP policies—includes filtering, prioritizing, and/or rate limiting ICMP traffic for security
•
802.1p/ToS/DSCP—includes policies for marking and mapping
•
Access Control Lists (ACLs)—ACLs are a specific type of QoS policy used for Layer 2 and
•
Layer 3/4 filtering. Since filtering is used in many different network situations, ACLs are described in a
separate chapter (see

In This Chapter

This chapter describes QoS in general and how policies are used on the switch. It provides information
about configuring QoS through the Command Line Interface (CLI). CLI commands are used in the config-
uration examples; for more details about the syntax of commands, see the OmniSwitch CLI Reference
Guide.
Configuration procedures described in this chapter include:
Setting up global QoS parameters (see
•
Setting up policy components, such as policy conditions and actions (see
•
Configuring specific types of policies (see
•
Note. Policies may also be configured through the PolicyView NMS application and stored on an attached
LDAP server. LDAP policies are downloaded to the switch and managed via the Policy Manager feature
in the switch. For more information about managing LDAP policies, see
Servers."
OmniSwitch 6624/6648 Network Configuration Guide
21 Configuring QoS
Chapter 22, "Configuring
page 21-13)
page
ACLs").
21-49)
Chapter 20, "Managing Policy
April 2004
page 21-22)
page 21-1