GE 82-POE Benutzerhandbuch

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Chapter 4: Web-Based Management 
GE-DS-82 and 82-PoE Ethernet Managed Switch User Manual 
121 
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 
are 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.  
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. 
Figure 84: MAC Limit - Configure MAC Limit 
 
 
This page includes the following fields: 
 
OBJECT DESCRIPTION 
MAC Limit 
Enable or disable MAC limit function for the Managed Switch. 
Port Number 
Indicate port 1 to port 26. 
Limit 
The maximum number of per-port MAC addresses to be learned  
(1-64, 0 to disable this port's MAC limit function).