R0106-HP MSR Router Series Layer 2 - LAN Switching Command Reference(V7)

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mac-address (system view)
Use mac-address to add or modify a MAC address entry.
Use undo mac-address to delete one or all MAC address entries.
Syntax
mac-address { dynamic | static } mac-address interface interface-type interface-number vlan vlan-id
mac-address blackhole mac-address vlan vlan-id
undo mac-address [ [ dynamic | static ] mac-address interface interface-type interface-number vlan
vlan-id ]
undo mac-address [ blackhole | dynamic | static ] [ mac-address ] vlan vlan-id
undo mac-address [ dynamic | static ] interface interface-type interface-number
undo mac-address [ [ mac-address ] vlan vlan-id ]
Default
The system is not configured with any MAC address entries.
Views
System view
Predefined user roles
network-admin
Parameters
dynamic: Specifies dynamic MAC address entries.
static: Specifies static MAC address entries.
blackhole: Specifies blackhole MAC address entries. Packets whose destination MAC addresses match
blackhole MAC address entries are dropped.
mac-address: Specifies a MAC address in the format of H-H-H, excluding multicast and all-zero MAC
addresses. When entering a MAC address, you can omit the leading zeros in each H section. For
example, enter f-e2-1 for 000f-00e2-0001.
vlan vlan-id: Specifies an existing VLAN to which the interface belongs. The value range for the vlan-id
argument is 1 to 4094.
interface interface-type interface-number: Specifies an outgoing interface by its type and number.
interface interface-list: Specifies interfaces in the format of { interface-type interface-number [ to
interface-type interface-number ] } &<1-n>. The interface type can only be a Layer 2 Ethernet interface.
&<1-n> specifies that you can configure up to n interfaces or interface ranges. The value range for n
depends on the device model.
Usage guidelines
Typically, the device automatically builds the MAC address table by learning the source MAC addresses
of incoming frames on each interface. However, you can manually configure static MAC address entries.
For a MAC address, a manually configured static entry takes precedence over a dynamically learned
entry. To improve the security for the user device connected to an interface, manually configure a static
entry to bind the user device to the interface. Then, the frames destined for the user device (for example,
Host A) are always sent out of the interface. Other hosts using the forged MAC address of Host A cannot
obtain the frames destined for Host A.