Introduction
96
IPLink 2800 Series Getting Started Guide
8 • Link scheduler configuration
Introduction
This chapter describes how to use and configure the IPLink Quality of Service (QoS) features. Refer to 7,
“Access control list configuration”
on page 81 for more information on the use of access control lists.
This chapter includes the following sections:
•
Quick references (see page 100)
•
Packet Classification (see page 102)
•
Assigning bandwidth to traffic classes (see page 100)
•
Link scheduler configuration task list (see page 101)
QoS in networking refers to the capability of the network to provide a better service to selected network traffic.
This chapter shows you how to configure the IPLink router to best use the access link.
In many applications you can gain a lot by applying the minimal configuration found in the quick reference
section, but read sections
“Applying scheduling at the bottleneck”
the paradox of why we apply a rate-limit to reduce delay and what a “traffic-class” means.
Configuring access control lists
Packet filtering helps to control packet movement through the network. Such control can help to limit net-
work traffic and to restrict network use by certain users or devices. To permit or deny packets from crossing
specified interfaces, the IPLink 2800 provides access control lists.
An access control list is a sequential collection of permit and deny conditions that apply to packets on a certain
interface. Access control lists can be configured for all routed network protocols (IP, ICMP, TCP, UDP, and
SCTP) to filter the packets of those protocols as the packets pass through an IPLink 2800. The 2800 tests
packets against the conditions in an access list one by one. The first match determines whether the IPLink
2800 accepts or rejects the packet. Because the IPLink 2800 stops testing conditions after the first match, the
order of the conditions is critical. If no conditions match, the software rejects the address.
For information and examples on how configure access control lists, refer to chapter 7,
Summary of Contents for IPLink 2821
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Page 18: ...About this guide IPLink 2800 Series Getting Started Guide 18...
Page 114: ...114 Chapter 9 LEDs status and monitoring Chapter contents Status LEDs 121...
Page 134: ...134 Appendix E IPLink 2800 Series factory configuration Chapter contents Introduction 142...
Page 136: ...136 Appendix F Installation checklist Chapter contents Introduction 144...