H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 663)

642
Configuring ACL and QoS
ACL overview
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 primarily used for packet filtering. You can use ACLs in QoS, security, and other feature
modules for identifying traffic. The packet drop or forwarding decisions varies with the modules that use
ACLs.
ACLs include the following categories.
Category ACL number IP version Match criteria
WLAN ACLs 100 to 199 IPv4 and IPv6 WLAN SSID
WLAN-AP ACLs 200 to 299 IPv4 and IPv6 MAC address and serial ID of a WLAN AP.
Basic ACLs 2000 to 2999
IPv4 Source IPv4 address.
IPv6 Source IPv6 address.
Advanced ACLs 3000 to 3999
IPv4
Source/destination IPv4 address, packet priority,
protocols over IPv4, and other Layer 3 and Layer 4
header fields.
IPv6
Source/destination IPv6 address, packet priority,
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.
For more information about ACL, see ACL and QoS Configuration Guide.
QoS overview
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 might provide various services.
Generally, QoS refers to the ability to provide improved service by solving the core issues such as delay,
jitter, and packet loss ratio in the packet forwarding process.
Traditional packet forwarding services
On traditional IP networks, devices treat all packets equally and handle them using the first in first out
(FIFO) policy. All packets share the resources of the network and devices. The amount of resources the
packets can obtain completely depends on the time they arrive. This service is called "best-effort." It