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Default level
2: System level
Parameters
rule-id: Specifies a rule ID, in the range of 0 to 65534. If no rule ID is provided when you create an ACL
rule, the system automatically assigns it a rule ID. This rule ID takes the nearest higher multiple of the
numbering step to the current highest rule ID, starting from 0. For example, if the rule numbering step is
5 and the current highest rule ID is 28, the rule is numbered 30.
deny: Denies matching packets.
permit: Allows matching packets to pass.
cos vlan-pri: Matches an 802.1p priority. The vlan-pri argument can be a number in the range of 0 to 7,
or in words, best-effort (0), background (1), spare (2), excellent-effort (3), controlled-load (4), video (5),
voice (6), or network-management (7).
dest-mac dest-addr dest-mask: Matches a destination MAC address range. The dest-addr and dest-mask
arguments represent a destination MAC address and mask in H-H-H format.
lsap lsap-type lsap-type-mask: Matches the DSAP and SSAP fields in LLC encapsulation. The lsap-type
argument is a 16-bit hexadecimal number that represents the encapsulation format. The lsap-type-mask
argument is a 16-bit hexadecimal number that represents the LSAP mask.
type protocol-type protocol-type-mask: Matches one or more protocols in the Ethernet frame header. The
protocol-type argument is a 16-bit hexadecimal number that represents a protocol type in Ethernet_II and
Ethernet_SNAP frames. The protocol-type-mask argument is a 16-bit hexadecimal number that represents
a protocol type mask.
source-mac sour-addr source-mask: Matches a source MAC address range. The sour-addr argument
represents a source MAC address, and the sour-mask argument represents a mask in H-H-H format.
time-range time-range-name: Specifies a time range for the rule. The time-range-name argument is a
case-insensitive string of 1 to 32 characters. It must start with an English letter. If the time range is not
configured, the system creates the rule; however, the rule using the time range can take effect only after
you configure the timer range.
Description
Use the rule command to create or edit an Ethernet frame header ACL rule. You can edit ACL rules only
when the match order is config.
Use the undo rule command to delete an Ethernet frame header ACL rule or some attributes in the rule.
If no optional keywords are provided, you delete the entire rule. If optional keywords or arguments are
provided, you delete the specified attributes.
By default, an Ethernet frame header ACL does not contain any rule.
Within an ACL, the permit or deny statement of each rule must be unique. If the ACL rule you are creating
or editing has the same deny or permit statement as another rule in the ACL, your creation or editing
attempt fails.
To view rules in an ACL and their rule IDs, use the display acl all command.
Related commands: acl, display acl, step, and time-range.
Examples
# Create a rule in ACL 4000 to permit ARP packets and deny RARP packets.
<Sysname> system-view
[Sysname] acl number 4000
7
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