Chapter 25 IP Source Guard
GS3700/XGS3700 Series User’s Guide
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25.3 IPv4 Source Guard Setup
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 Advanced Application > I P Source Guard > I Pv4 Source Guard Setup.
Figure 183 Advanced Application > IP Source Guard > IPv4 Source Guard Setup
The following table describes the labels in this screen.
IPv6 Source Guard
Port Setup
(Standalone mode)
Click the link to open a screen where you can apply the configured IPv6 source guard
policy to a port.
IPv6 Snooping Policy
Setup (Standalone
mode)
Click the link to open a screen where you can set up DHCPv6 snooping policies for the
binding table.
IPv6 Snooping VLAN
Setup (Standalone
mode)
Click the link to open a screen where you can enable a DHCPv6 snooping policy on a
specific VLAN interface.
IPv6 DHCP Trust
Setup (Standalone
mode)
Click the link to open a screen where you can specify which ports are trusted for
DHCPv6 snooping.
Table 121 IP Source Guard (continued)
LABEL DESCRIPTION
Table 122 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, 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.
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.
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