R211x-HP Flexfabric 11900 Layer 2 - LAN Switching Command Reference

static: Specifies static MAC address entries.

blackhole: Specifies blackhole MAC address entries. The packets whose source or destination MAC

addresses match blackhole MAC address entries are dropped.

multiport: Specifies multiport unicast MAC address entries. A frame whose destination MAC address

matches a multiport unicast MAC address entry is sent out of multiple ports.

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 ] } &<1-4>. The interface type can be the Layer 2 Ethernet interface or

Layer 2 aggregate interface. &<1-4> specifies that you can configure up to four interfaces or interface

ranges.

nickname nickname: Specifies an RB (through which the packets leave the TRILL network) by its nickname.

The nickname is a hexadecimal number in the range of 0x1 to 0xFFFE.

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 interface security, 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 static entries have higher priority than dynamically learned entries, using

manually configured entries prevents hackers from using forged MAC addresses to steal data.

To drop the packets with the specified source MAC addresses or destination MAC addresses, you can

configure blackhole MAC address entries.

A multiport unicast MAC address entry is used to send frames with a specific destination MAC address

out of multiple ports. When you execute this command for the first time, the command adds a MAC

address entry. When you execute the command again with the same MAC address and VLAN but with

different interfaces, this command adds the specified interfaces for this entry.

A static or blackhole MAC address entry can overwrite a dynamic MAC address entry, but not vice

versa.

If you execute the undo mac-address command without specifying any parameters, this command

deletes all unicast MAC address entries and static multicast MAC address entries.

You can delete all the MAC address entries (including unicast MAC address entries and static multicast

MAC address entries) of a specified VLAN, or you can delete only a specific type (dynamic, static,

blackhole, or multiport unicast) of MAC address entries. You can single out certain interfaces and delete

the corresponding unicast MAC address entries, but not the corresponding static multicast MAC address

entries. You can single out certain RBs through which the packets leave the TRILL network and delete the

corresponding unicast MAC address entries.

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.

This command displays manually configured dynamic MAC address entries for an aggregate interface

only when at least one member port is in Selected state.