Dhcp Configuration - Cisco 500 series Administration Manual

Configuring DHCP

DHCP Configuration

DHCP Configuration
STEP 1
STEP 2
STEP 3
STEP 4
Cisco 500 Series Stackable Managed Switch Administration Guide
This section describes how the DHCP Relay and Snooping features are
implemented via the Web-based interface.
Defining DHCP Properties
To configure DHCP Relay, DHCP Snooping and Option 82:
Click IP Configuration > DHCP > Properties or Security > DHCP Snooping >
Properties
Properties. The
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 Passthrough
-
when forwarding packets.
Verify MAC Address
-
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
-
database on the device's flash memory.
Backup Database Update Interval
-
Binding database is to be backed up (if Backup Database is selected).
Click Apply. The settings are written to the Running Configuration file.
To define a DHCP server, click Add. The Add DHCP Server page is displayed.
Enter the IP address of the DHCP server and click Apply. The settings are written
to the Running Configuration file.
Defining DHCP Interface Settings
In Layer 2, DHCP Relay and Snooping can only be enabled on VLANs with IP
addresses.
page is displayed.
—Select to leave foreign Option 82 information
—Select to verify that the source MAC address of
—Select to back up the DHCP Snooping Binding
—Enter how often the DHCP Snooping
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