Configuring Acls; Overview; Acl Categories; Numbering And Naming Acls - HP MSR4080 Configuration Manual

Configuring ACLs

In this chapter, "MSR1000" refers to MSR1002-4. "MSR2000" refers to MSR2003, MSR2004-24,
MSR2004-48. "MSR3000" collectively refers to MSR3012, MSR3024, MSR3044, MSR3064.
"MSR4000" collectively refers to MSR4060 and MSR4080.

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 varies with the modules that use ACLs.

ACL categories

Category
Basic ACLs
Advanced ACLs
Ethernet frame
header ACLs

Numbering and naming ACLs

Each ACL category has a unique range of ACL numbers. When creating an ACL, you must assign it a
number. In addition, you can assign the ACL a name for ease of identification. After creating an ACL with
a name, you cannot rename it or delete its name.
For an IPv4 basic or advanced ACLs, its ACL number and name must be unique in IPv4. For an IPv6 basic
or advanced ACL, its ACL number and name must be unique in IPv6.

Match order

The rules in an ACL are sorted in a specific order. When a packet matches a rule, the device stops the
match process and performs the action defined in the rule. If an ACL contains overlapping or conflicting
rules, the matching result and action to take depend on the rule order.
ACL number IP version
IPv4
2000 to 2999
IPv6
IPv4
3000 to 3999
IPv6
4000 to 4999 N/A
"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.
5
ACLs" provides an