Chapter 25 IP Source Guard
GS1920 Series User’s Guide
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The following table describes the labels in this screen.
25.6 ARP Inspection Status
Use this screen to look at the current list of MAC address filters that were created because the
Switch identified an unauthorized ARP packet. When the Switch identifies an unauthorized ARP
packet, it automatically creates a MAC address filter to block traffic from the source MAC address
and source VLAN ID of the unauthorized ARP packet. To open this screen, click Advanced
Application > IP Source Guard > ARP Inspection.
Table 85 Advanced Application > IP Source Guard > DHCP Snooping > Configure > VLAN > Port
LABEL DESCRIPTION
VID Enter the ID number of the VLAN you want to configure here.
Port Enter the number of port(s) to which you want to apply the specified DHCP option 82
profile.
You can enter multiple ports separated by (no space) comma (,) or hyphen (-). For
example, enter “3-5” for ports 3, 4, and 5. Enter “3,5,7” for ports 3, 5, and 7.
Option 82 Profile Select a pre-defined DHCP option 82 profile that the Switch applies to the specified
port(s) in this VLAN. The Switch adds the information (such as slot number, port
number, VLAN ID and/or system name) specified in the profile to DHCP requests that it
broadcasts to the DHCP VLAN, if specified, or VLAN. You can specify the DHCP VLAN in
the DHCP Snooping Configure screen (see Section 25.5 on page 193).
The profile you select here has priority over the one you select in the DHCP Snooping
> Configure > VLAN screen.
Add Click this to create a new entry or to update an existing one.
This saves your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation
panel to save your changes to the non-volatile memory when you are done configuring.
Cancel Click this to reset the values above based on the last selected entry or, if not applicable,
to clear the fields above.
Clear Click Clear to reset the fields to the factory defaults.
Index This field displays a sequential number for each entry. Click an index number to change
the settings.
VID This field displays the VLAN to which the port(s) belongs.
Port This field displays the port(s) to which the Switch applies the settings.
Profile Name This field displays the DHCP option 82 profile that the Switch applies to the port(s).
Delete Select the entry(ies) that you want to remove in the Delete column, then click the
Delete button to remove the selected entry(ies) from the table.
Cancel Click this to clear the Delete check boxes above.
