Gigabit Ethernet Switch Management Guide

OMMAND

INE

NTERFACE

4-140

Command Usage

• You must configure a mask for an ACL rule before you can bind it to

a port or set the queue or frame priorities associated with the rule.

• A mask can only be used by all ingress ACLs or all egress ACLs.

• The precedence of the ACL rules applied to a packet is not determined

by order of the rules, but instead by the order of the masks; i.e., the

first mask that matches a rule will determine the rule that is applied to

a packet.

Example

Related Commands

mask (MAC ACL) (4-140)

mac access-group (4-144)

mask (MAC ACL)

This command defines a mask for MAC ACLs. This mask defines the

fields to check in the packet header. Use the no form to remove a mask.

Syntax

[no] mask [pktformat] {any | host | source-bitmask}

{any | host | destination-bitmask}[vid [vid-bitmask]]

[ethertype [ethertype-bitmask]]

• pktformat – Check the packet format field. (If this keyword must

be used in the mask, the packet format must be specified in ACL

rule to match.)

• any – Any address will be matched.

• host – The address must be for a single node.

• source-bitmask – The source address of the rule must match this

bitmask.

• destination-bitmask – The destination address of the rule must match

this bitmask.

• vid – Check the VLAN ID field.

Console(config)#access-list mac mask-precedence in

Console(config-mac-mask-acl)#