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4-133
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) (4-133)
mac access-group (4-136)
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 – Source address of rule must match this bitmask.
• destination-bitmask – Destination address of rule must match this
bitmask.
• vid – Check the VLAN ID field.
• vid-bitmask – VLAN ID of rule must match this bitmask.
Console(config)#access-list mac mask-precedence in
Console(config-mac-mask-acl)#