Configuring Layer 2 Acl - 3Com 5500-EI PWR Install Manual

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.
The content of a modified or created rule cannot be identical with the content of any
existing rules; otherwise the rule modification or creation will fail, and the system
prompts that the rule already exists.
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
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
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 Configuring Time Range
The settings to be specified in the rule, such as source and destination MAC addresses,
VLAN priorities, and Layer 2 protocol types, are determined.
Configuration procedure
Follow these steps to define a Layer 2 ACL rule:
To do...
Enter system view
3000, 1 rule
Use the command...
system-view
1-8
Remarks
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