Managing MAC Address Tables
Defining Reserved MAC Addresses
235 Cisco Small Business 300 Series Managed Switch Administration Guide
14
Defining Reserved MAC Address es
When the device receives a frame with a Destination MAC address that belongs to
a reserved range (per the IEEE standard), the frame can be discarded or bridged.
The entry in the Reserved MAC Address Table can either specify the reserved
MAC address or the reserved MAC address and a frame type:
To add an entry for a reserved MAC address:
STEP 1 Click MAC Address Tables > Reserved MAC Addresses. The Reserved MAC
Addresses page opens.
STEP 2 Click Add.
STEP 3 Enter the values for the following fields:
•MAC Address—Select the MAC address to be reserved.
•Frame Type—Select a frame type based on the following criteria:
-

Ethernet V2

—Applies to Ethernet V2 packets with the specific MAC
address.
-

LLC

—Applies to Logical Link Control (LLC) packets with the specific
MAC address.
-

LLC-SNAP

—Applies to Logical Link Control/Sub-Network Access
Protocol (LLC-SNAP) packets with the specific MAC address.
-

All

—Applies to all packets with the specific MAC address.
•Action—Select one of the following actions to be taken upon receiving a
packet that matches the selected criteria:
-

Discard

—Delete the packet.
-

Bridge

—Forward the packet to all VLAN members.
STEP 4 Click Apply. A new MAC address is reserved.