Configuration example, Configuring layer 2 acl, Configuration prerequisites – H3C Technologies H3C S3100 Series Switches User Manual
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Operation
Command
Description
Assign a description
string to the ACL
description text
Optional
No description by default
Note that:
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With the config match order specified for the advanced ACL, you can modify any existent rule. The
unmodified part of the rule remains. With the auto match order specified for the ACL, you cannot
modify any existent rule; otherwise the system prompts error information.
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If you do not specify the rule-id argument when creating an ACL rule, the rule will be numbered
automatically. If the ACL has no rules, the rule is numbered 0; otherwise, the number of the rule will
be the greatest rule number plus one. If the current greatest rule number is 65534, however, the
system will display an error message and you need to specify a number for the rule.
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The content of a modified or created rule cannot be identical with that of any existing rule of the
ACL; otherwise the rule modification or creation will fail, and the system will prompt that the rule
already exists.
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If the ACL is created with the auto keyword specified, the newly created rules will be inserted in the
existent ones by depth-first principle, but the numbers of the existent rules are unaltered.
Configuration example
# Configure ACL 3000 to permit the TCP packets sourced from the network 129.9.0.0/16 and destined
for the network 202.38.160.0/24 and with the destination port number being 80.
<Sysname> system-view
[Sysname] acl number 3000
[Sysname-acl-adv-3000] rule permit tcp source 129.9.0.0 0.0.255.255 destination 202.38.160.0
0.0.0.255 destination-port eq 80
# Display the configuration information of ACL 3000.
[Sysname-acl-adv-3000] display acl 3000
Advanced ACL 3000, 1 rule
Acl's step is 1
rule 0 permit tcp source 129.9.0.0 0.0.255.255 destination 202.38.160.0 0.0.0.255
destination-port eq www
Configuring Layer 2 ACL
Layer 2 ACLs filter packets according to their Layer 2 information, such as the source and destination
MAC addresses, VLAN priority, and Layer 2 protocol types.
A Layer 2 ACL can be numbered from 4000 to 4999.
Configuration prerequisites
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To configure a time range-based Layer 2 ACL rule, you need to create the corresponding time
ranges first. For information about time range configuration, refer to section
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The settings to be specified in the rule, such as source and destination MAC addresses, VLAN
priorities, and Layer 2 protocol types, are determined.