Chapter 26 IP Source Guard
GS1920v2 Series User’s Guide
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26.3 IPv4 So urc e G ua rd Se tup
Use this screen to look at the current bindings for DHCP snooping and ARP inspection. Bindings are used
by DHCP snooping and ARP inspection to distinguish between authorized and unauthorized packets in
the network. The Switch learns the bindings by snooping DHCP packets (dynamic bindings) and from
information provided manually by administrators (static bindings). To open this screen, click
Adva nc e d
Applic a tio n > IP So urc e G ua rd > IPv4 So urc e G ua rd
Se tup
.
Fig ure 169
Advanced Application > IP Source Guard > IPv4 Source Guard Setup
The following table describes the labels in this screen.
26.4 IPv4 So urc e G ua rd Sta tic Binding
Use this screen to manage static bindings for DHCP snooping and ARP inspection. Static bindings are
uniquely identified by the MAC address and VLAN ID. Each MAC address and VLAN ID can only be in
one static binding. If you try to create a static binding with the same MAC address and VLAN ID as an
existing static binding, the new static binding replaces the original one. To open this screen, click
Adva nc e d Applic a tio n > IP So urc e G ua rd > IPv4 So urc e G ua rd
Se tup > Sta tic Binding
.
Table 100 Advanced Application > IP Source Guard > IPv4 Source Guard Setup
LABEL
DESC RIPTIO N
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 many days, hours, minutes, and seconds the binding is valid; for
example,
2d3h4m 5s
means the binding is still valid for 2 days, 3 hours, 4 minutes, and 5
seconds. This field displays
infinity
if the binding is always valid (for example, a static binding).
Type
This field displays how the Switch learned the binding.
sta tic
: This binding was learned from information provided manually by an administrator.
dhc p- sno o ping
: This binding was learned by snooping DHCP packets.
VID
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.
