Impb Port Settings - D-Link DGS-3000 series Reference Manual

DGS-3000 Series Layer 2 Managed Gigabit Switch Web UI Reference Guide
DHCP Snooping (IPv4)
DHCP Snooping (IPv6)
ND Snooping
Recover Learning
Ports
Click the Apply button to accept the changes made for each individual section.

IMPB 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 ARP
Inspection state, IP Inspection state, Allow Zero IP and Forward DHCP Packet field, and configure the port's
protocol setting and Stop Learning Threshold.
To view this window, click Security > IP-MAC-Port Binding (IMPB) > IMPB Port Settings as shown below:
The fields that can be configured are described below:
Parameter
From Port / To Port
ARP Inspection
MAC-port binding configuration set on the Switch. The default is Disabled.
Click the radio buttons to enable or disable DHCP snooping (IPv4) for IP-MAC-Port
binding. The default is Disabled.
Click the radio buttons to enable or disable DHCP snooping (IPv6) for IP-MAC-Port
binding. The default is Disabled.
Click the radio buttons to enable or disable enable ND snooping on the Switch. The
default is Disabled.
Enter the port numbers used to recover the learning port state. Tick the All check
box to apply to all ports.
Figure 8-30 IMPB Port Settings window
Description
Select a range of ports to set for IP-MAC-port binding.
When the ARP inspection function is enabled, the legal ARP packets are forwarded,
while the illegal packets are dropped.
Disabled - Disable the ARP inspection function.
Enabled (Strict) - This mode disables hardware learning of the MAC address. All
packets are dropped by default until a legal ARP or IP packets are detected. When
enabling this mode, the Switch stops writing dropped FDB entries on these ports. If
detecting legal packets, the Switch needs to write forward FDB entry.
Enabled (Loose) - In this mode, all packets are forwarded by default until an illegal
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