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C
OMMAND
L
INE
I
NTERFACE
4-142
• 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) (4-142)
mac access-group (4-145)
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.
•
ethertype
– Check the Ethernet type field.
•
ethertype-bitmask
– Ethernet type of rule must match this bitmask.
Default Setting
None
Console(config)#access-list mac mask-precedence in
Console(config-mac-mask-acl)#
Summary of Contents for 8708L2
Page 2: ......
Page 24: ...TABLES xxiv ...
Page 28: ...FIGURES xxviii ...
Page 290: ...CONFIGURING THE SWITCH 3 238 ...
Page 584: ...COMMAND LINE INTERFACE 4 294 ...
Page 592: ...TROUBLESHOOTING B 4 ...
Page 605: ......