H3C H3C S5100-SI, Руководство по эксплуатации, Страница: 379 / 830

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Operation Command Description
Assign a description
string to the ACL
description text
Optional
No description by default
Note that:
z
You can modify any existent rule of the Layer2 ACL and the unmodified part of the ACL remains.
z
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.
z
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.
Configuration Example
# Configure ACL 4000 to deny packets sourced from the MAC address 000d-88f5-97ed, destined for
the MAC address 0011-4301-991e, and with their 802.1p priority being 3.
<Sysname> system-view
[Sysname] acl number 4000
[Sysname-acl-ethernetframe-4000] rule deny cos 3 source 000d-88f5-97ed ffff-ffff-ffff dest
0011-4301-991e ffff-ffff-ffff
# Display the configuration information of ACL 4000.
[Sysname-acl-ethernetframe-4000] display acl 4000
Ethernet frame ACL 4000, 1 rule
Acl's step is 1
rule 0 deny cos excellent-effort source 000d-88f5-97ed ffff-ffff-ffff dest 0011-4301-991e
ffff-ffff-ffff
ACL Assignment
On an S5100 Ethernet switch, you can assign ACLs to the hardware for packet filtering.
As for ACL assignment, the following four ways are available.
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Assigning ACLs globally, for filtering the inbound packets on all the ports.
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Assigning ACLs to a VLAN, for filtering the inbound packets on all the ports and belonging to a
VLAN.
z
Assigning ACLs to a port group (not supported on S5100-SI series), for filtering the inbound
packets on all the ports in a port group. For information about port group, refer to Port Basic
Configuration .
z
Assigning ACLs to a port, for filtering the inbound packets on a port.
You can assign ACLs in the above-mentioned ways as required.