5
undo mac-address
[
blackhole
|
dynamic
|
static
]
[
mac
-
address
]
vlan
vlan
-
id
undo mac-address
[
dynamic
|
static
]
mac-address interface interface
-
type interface
-
number
vlan vlan
-
id
undo mac-address
[
dynamic
|
static
]
interface interface
-
type interface
-
number
Default
No MAC address entry is configured.
Views
System view
Default command level
2: System level
Parameters
blackhole
: Specifies destination blackhole MAC address entries. These entries do not age, but you
can add or remove them. The packets whose destination MAC addresses match destination
blackhole MAC address entries are dropped.
mac
-
address
: Specifies a MAC address in the format of H-H-H, where 0s at the beginning of each H
(16-bit hexadecimal digit) can be omitted. For example, entering "f-e2-1" indicates that the MAC
address is "000f-00e2-0001."
vlan vlan
-
id
: Specifies an existing VLAN to which the Ethernet interface belongs. The value range for
the
vlan-id
argument is 1 to 4094.
dynamic
: Specifies dynamic MAC address entries, which can be aged.
static
: Specifies static MAC address entries. These entries do not age, but you can add or remove
them.
interface interface
-
type interface
-
number
: Specifies an outbound interface by its type and number.
Usage guidelines
A static or blackhole MAC address entry will not be overwritten by a dynamic MAC address entry. A
dynamic MAC address entry can be overwritten by a static or blackhole MAC address entry.
If you execute the
undo mac-address
command without specifying any parameters, this command
deletes all unicast MAC address entries.
You can delete all the MAC address entries of a VLAN, or you can choose to delete a specific type
(dynamic, static, or blackhole) of MAC address entries only. You can single out certain ports and
delete the corresponding unicast MAC address entries.
The MAC address entries configuration cannot survive a reboot unless you save it. However, the
dynamic MAC address entries are lost at next reboot regardless of whether you save the
configuration or not.
Examples
# Add a static entry for MAC address 000f-e201-0101. All frames destined to this MAC address are
sent out of port Ethernet 1/1 that belongs to VLAN 2.
<Sysname> system-view
[Sysname] mac-address static 000f-e201-0101 interface ethernet 1/1 vlan 2
Related commands
display mac-address
