Chapter 25 IP Source Guard
GS1920 Series User’s Guide
190
The following table describes the labels in this screen.
25.4 DHCP Snooping
Use this screen to look at various statistics about the DHCP snooping database. To open this screen,
click Advanced Application > IP Source Guard > DHCP Snooping.
Table 80 Advanced Application > IP Source Guard > Static Binding
LABEL DESCRIPTION
ARP Freeze ARP Freeze allows you to automatically create static bindings from the current ARP
entries (either dynamically learned or static ARP entries) until the Switch’s binding
table is full.
Note: The ARP learning mode should be set to ARP-Request in the IP Application
> ARP Setup > ARP Learning screen before you use the ARP Freeze
feature.
Condition All - Select this and click ARP Freeze to have the Switch automatically add all the
current ARP entries to the static bindings table.
Port List - Select this and enter the number of the port(s) (separated by a
comma). ARP entries learned on the specified port(s) are added to the static
bindings table after you click ARP Freeze.
VLAN List - Select this and enter the ID number of the VLAN(s) (separated by a
comma). ARP entries for the specified VLAN(s) are added to the static bindings
table after you click ARP Freeze.
Static Binding
MAC Address Enter the source MAC address in the binding.
IP Address Enter the IP address assigned to the MAC address in the binding.
VLAN Enter the source VLAN ID in the binding.
Port Specify the port(s) in the binding. If this binding has one port, select the first radio
button and enter the port number in the field to the right. If this binding applies to
all ports, select Any.
Add Click this to create the specified static binding or to update an existing one.
Cancel Click this to reset the values above based on the last selected static binding or, if
not applicable, to clear the fields above.
Clear Click this to clear the fields above.
Index This field displays a sequential number for each binding.
MAC Address This field displays the source MAC address in the binding.
IP Address This field displays the IP address assigned to the MAC address in the binding.
Lease This field displays how long the binding is valid.
Type This field displays how the Switch learned the binding.
static: This binding was learned from information provided manually by an
administrator.
VLAN This field displays the source VLAN ID in the binding.
Port This field displays the port number in the binding. If this field is blank, the binding
applies to all ports.
Delete Select this, and click Delete to remove the specified entry.
Cancel Click this to clear the Delete check boxes above.
