Ip-Mac-Port Binding; Imp Global Settings; Imp Port Settings - D-Link DES-1228/ME User Manual

IP-MAC-Port Binding

The IP network layer uses a four-byte address. The Ethernet link layer uses a six-byte MAC address. Binding these two address
types together allows the transmission of data between the layers. The primary purpose of IP-MAC binding is to restrict the access
to a switch to a number of authorized users. Only the authorized client can access the Switch's port by checking the pair of IP-
MAC addresses with the pre-configured database. If an unauthorized user tries to access an IP-MAC binding enabled port, the
system will block the access by dropping its packet. The maximum number of IP-MAC binding entries is dependant on chip
capability (e.g. the ARP table size) and storage size of the device. For this series of switches, Active and inactive entries use the
same database. The maximum entry number is 500. The creation of authorized users can be manually configured by CLI or Web.
The function is port-based, meaning a user can enable or disable the function on the individual port.

IMP Global Settings

This window is used to enable or disable the Trap Log State on the switch. The Trap/Log field will enable and disable the sending
of trap log messages for IP-MAC binding. When enabled, the Switch will send a trap message to the SNMP agent and the Switch
log when an ARP packet is received that doesn't match the IP-MAC binding configuration set on the Switch.
To view this window click, Security > IP-MAC-Port Binding > IMP Global Settings
The following parameters can be set:
Parameter
Trap / Log
Click Apply to implement the settings made.

IMP Port Settings

Select a port or a range of ports with the From Port and To Port fields. Enable or disable the port with the State and Allow Zero
IP.
To view this window click, Security > IP-MAC-Port Binding > IMP Port Settings
DES-1228/ME Layer 2 Fast Ethernet Managed Switch
Figure 10- 4. IMP Global Settings window
Description
This field will enable and disable the sending of trap log messages for IP-MAC binding. When
enabled, the Switch will send a trap log message to the SNMP agent and the Switch log
when an ARP packet is received that doesn't match the IP-MAC binding configuration set on
the Switch.
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