Configuring Acls; Overview; Applications On The Switch; Acl Categories - HP FlexFabric 5700 series Configuration Manual

Configuring ACLs

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.
example. You can use ACLs in QoS, security, routing, and other feature modules for identifying traffic.
The packet drop or forwarding decisions depend on the modules that use ACLs.

Applications on the switch

An ACL is implemented in hardware or software, depending on the module that uses it.
• If the module is implemented in hardware (for example, the packet filter or QoS module), the ACL
is applied to hardware to process traffic.
If the module is implemented in software (for example, the routing module or the user interface
•
access control module such as Telnet, or SNMP), the ACL is applied to software to process traffic.
The user interface access control module denies packets that do not match any ACL. Some modules (QoS
for example) ignore the permit or deny action in ACL rules and do not base their drop or forwarding
decisions on the action set in ACL rules. See the specified module for information about ACL application.

ACL categories

Category
Basic ACLs
Advanced ACLs
Ethernet frame
header ACLs
User-defined
ACLs
ACL number IP version
IPv4
2000 to 2999
IPv6
IPv4
3000 to 3999
IPv6
4000 to 4999 IPv4 and IPv6
5000 to 5999 IPv4 and IPv6
"Configuring packet filtering with
Match criteria
Source IPv4 address.
Source IPv6 address.
Source IPv4 address, destination IPv4 address,
packet priority, protocol number, and other
Layer 3 and Layer 4 header fields.
Source IPv6 address, destination IPv6 address,
packet priority, protocol number, and other
Layer 3 and Layer 4 header fields.
Layer 2 header fields, such as source and
destination MAC addresses, 802.1p priority,
and link layer protocol type.
User specified matching patterns in protocol
headers.
1
ACLs" provides an