Mac Limit; Mac Limit Configuration - Planet VC-820M User Manual

4.13 MAC Limit

MAC limit allows users to set a maximum number of MAC addresses to be stored in the MAC address table. The MAC
addresses chosen to be stored in MAC address table is the result of first-come-first-save policy. Once a MAC address is
stored in the MAC address table, it stays in until it is aged out. When an "opening" is available, the switch stored the first
new MAC address it sees in that opening. All packets from MAC addresses not in the MAC address table should be
blocked.

4.13.1 MAC Limit Configuration

The Layer 2 MAC Limit function can be per-port configured for security management purposes. When the port is in MAC
Limit mode, the port will be "locked" without permission of address learning. Only the incoming packets with Source MAC
already existing in the address table can be forwarded normally. User can disable the port from learning any new MAC
addresses.
The page includes the following fields:
Object
MAC Limit
Port Number
Limit
MAC Limit is only functioned on Fast Ethernet port, Port-1 to Port-8 of VC-820M.
Figure 4-13-1: MAC Limit - Configure MAC Limit
Description
Enable or disable MAC limit function for the Managed Switch.
Indicate port 1 to port 8.
The maximum number of per-port MAC addresses to be learned (1-64, 0 to
disable this port's MAC limit function).
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User's Manual of VC-820M