HP MSR2000/3000/4000 Router Series Layer 2 - LAN Switching Command Reference

4
mac-address (interface view)
Use mac-address to add or modify a MAC address entry on the specified interface.
Use undo mac-address to delete a MAC address entry on the specified interface.
Syntax
mac-address { dynamic | static } mac-address vlan vlan-id
undo mac-address { dynamic | static } mac-address vlan vlan-id
Default
An interface is not configured with any MAC address entry.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
dynamic: Specifies dynamic MAC address entries.
static: Specifies static MAC address entries.
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 specified interface belongs. The value range for the
vlan-id argument is 1 to 4094.
Usage guidelines
Generally, the device automatically builds the MAC address table by learning the source MAC
addresses of incoming frames on each interface. To improve the security for an interface, you can
manually add the specific MAC address entries to the MAC address table and bind the user device to the
interface. Because manually configured entries have higher priority than dynamically learned entries,
using manually configured entries prevents hackers from using forged MAC addresses to steal data.
The MAC address entries configuration cannot survive a reboot unless you save it. The dynamic MAC
address entries, however, are lost upon reboot regardless of whether you save the configuration.
Examples
# Add a static entry for MAC address 000f-e201-0101 on interface Ethernet 2/1 that belongs to VLAN
2.
<Sysname> system-view
[Sysname] interface ethernet 2/1
[Sysname-Ethernet2/1] mac-address static 000f-e201-0101 vlan 2
Related commands
• display mac-address
• mac-address (system view)