Configuring A Layer 2 Acl Rule - Huawei AR1200-S Configuration Manual

Huawei AR1200-S Series Enterprise Routers
Configuration Guide - Security
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Follow-up Procedure
Configure rules in the Layer 2 ACL.

10.5.4 Configuring a Layer 2 ACL Rule

A Layer 2 ACL is composed of a list of rules. The ACL classifies packets by matching packet
information with the ACL rules.
Prerequisites
A Layer 2 ACL has been created and the Layer 2 ACL view is displayed.
Before creating a new rule, run the display acl { acl-number | name acl-name } command to
view all the configured ACL rules to prevent the new rule from overriding existing rules.
Context
A Layer 2 ACL classifies packets by matching packet information with the ACL rules. After a
Layer 2 ACL is created, configure rules in the Layer 2 ACL.
Procedure
Step 1 (Optional) Run:
Issue 02 (2012-03-30)
Creating a named Layer 2 ACL
1. Run:
system-view
The system view is displayed.
2. Run:
acl name acl-name { link | acl-number } [ match-order { auto | config } ]
A Layer 2 ACL with the specified name is created and the Layer 2 ACL view is
displayed.
acl-number specifies the number of a Layer 2 ACL. The value ranges from 4000 to
4999.
match-order specifies the matching order of Layer 2 ACL rules:
– auto: indicates that ACL rules are matched based on the depth first principle.
– config: indicates that ACL rules are matched based on the sequence in which they
were configured.
3. (Optional) Run:
description text
The description of the Layer 2 ACL is configured.
The description of an ACL describes the function or usage of the ACL. It is used to
differentiate ACLs.
By default, no description is configured for an ACL.
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