
349
Configuring ACL and QoS
NOTE:
Unless otherwise stated, ACLs refer to both IPv4 and IPv6 ACLs throughout this document.
Overview
Introduction to ACL
An access control list (ACL) is a set of rules (or permit or deny statements) for identifying traffic based on
criteria such as source IP address, destination IP address, and port number.
ACLs are essentially used for packet filtering. A packet filter drops packets that match a deny rule and
permits packets that match a permit rule. ACLs are also widely used by many modules, for example, QoS
and IP routing, for traffic identification.
ACLs fall into the following categories.
Category
ACL number
IP version
Match criteria
Basic ACLs
2000 to 2999
IPv4
Source IPv4 address
IPv6
Source IPv6 address
Advanced ACLs 3000 to 3999
IPv4
Source IPv4 address, destination IPv4 address,
protocols over IPv4, and other Layer 3 and Layer
4 header fields
IPv6
Source IPv6 address, destination IPv6 address,
protocols over IPv6, and other Layer 3 and Layer
4 header fields
Ethernet frame
header ACLs
4000 to 4999
IPv4 and IPv6
Layer 2 header fields, such as source and
destination MAC addresses, 802.1p priority,
and link layer protocol type
NOTE:
For more information about ACL, see
ACL and QoS Configuration Guide.
Introduction to QoS
Quality of Service (QoS) is a concept concerning service demand and supply. It reflects the ability to
meet customer needs. Generally, QoS does not focus on grading services precisely, but on improving
services under certain conditions.
In the internet, QoS refers to the ability of the network to forward packets. The evaluation on QoS of a
network can be based on different aspects because the network may provide various services. Generally,
Содержание WA2620X-AGNP
Страница 106: ...93 Figure 90 Create a static MAC address entry ...
Страница 126: ...113 Figure 116 Information about an IGMP snooping multicast entry ...
Страница 145: ...132 Enter 10 1 1 2 for Gateway Address c Click Apply Figure 133 Configure a dynamic address pool for the DHCP server ...
Страница 187: ...174 Figure 174 Firefox web browser setting ...
Страница 219: ...206 Figure 202 Common configuration area 6 Configure the advanced parameters ...
Страница 243: ...230 Number of users Real time accounting interval in minutes 500 to 999 12 1000 15 ...
Страница 278: ...265 Figure 266 Network diagram LAN Segment ...
Страница 339: ...326 Figure 348 Configure the wireless card I ...
Страница 340: ...327 Figure 349 Configure the wireless card II ...
Страница 346: ...333 Figure 357 Configure the wireless card II ...