IP Configuration
IPv4 Management and Interfaces
Cisco 350XG & 550XG Series 10G Stackable Managed Switches
326
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STEP 3
Configure interfaces as trusted or untrusted in the
page.
STEP 4
Optional. Add entries to the DHCP Snooping Binding database in the
Properties
To configure DHCP Relay, DHCP Snooping and Option 82:
STEP 1
Click IP Configuration >
IPv4 Management and Interfaces
>DHCP Snooping/
Relay > Properties.
Enter the following fields:
•
Option 82—Select Option 82 to insert Option 82 information into packets.
•
DHCP Relay—Select to enable DHCP Relay.
•
DHCP Snooping Status—Select to enable DHCP Snooping. If DHCP
Snooping is enabled, the following options can be enabled:
-
Option 82 Pass Through
—Select to leave foreign Option 82 information
when forwarding packets.
-
Verify MAC Address
—Select to verify that the source MAC address of
the Layer 2 header matches the client hardware address as appears in
the DHCP Header (part of the payload) on DHCP untrusted ports.
-
Backup Database
—Select to back up the DHCP Snooping Binding
database on the device’s flash memory.
STEP 2
Click Apply. The settings are written to the Running Configuration file.
STEP 3
To define a DHCP server, click
Add
.
STEP 4
Enter the IP address of the DHCP server and click Apply. The settings are written
to the Running Configuration file.
Interface Settings
DHCP Relay and Snooping can be enabled on any interface with an IP address
and on VLANs with or without an IP address.
To enable DHCP Snooping/Relay on specific interfaces:
