ZyXEL Communications XS1920 Series, User Manual

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Chapter 26 IP Source Guard
XS1920 Series User’s Guide
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The following table describes the labels in this screen.
26.4 IPv4 Source Guard Static 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
Advanced Application > IP Source Guard > IPv4 Source Guard Setup > Static
Binding .
Table 101
Advanced Application > IP Source Guard > IPv4 Source Guard Setup
LABEL DESCRIPTION
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,
2d3h4m5s 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.
static : This binding was learned from information provided manually by an
administrator.
dhcp-snooping : 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.