Cisco 500 series Administration Manual page 393

Configuring DHCP
DHCP Snooping Binding Database
STEP 1
STEP 2
STEP 3
STEP 4
Cisco 500 Series Stackable Managed Switch Administration Guide
DHCP Snooping and DHCP Relay
If both DHCP Snooping and DHCP Relay are globally enabled, then if DHCP
Snooping is enabled on the client's VLAN, DHCP Snooping rules contained in the
DHCP Snooping Binding database are applied, and the DHCP Snooping Binding
database is updated in the client's and DHCP server's VLAN, for packets that are
relayed.
DHCP Default Configuration
The following describes DHCP Snooping and DHCP Relay default options.
DHCP Default Options
Option
DHCP Snooping
Option 82 Insertion
Option 82 Passthrough
Verify MAC Address
Backup DHCP Snooping Binding
Database
DHCP Relay
Configuring DHCP Work Flow
To configure DHCP Relay and DHCP Snooping:
Enable DHCP Snooping and/or DHCP Relay in the IP Configuration > DHCP >
Properties page or in the Security > DHCP Snooping > Properties page.
Define the interfaces on which DHCP Snooping is enabled in the IP Configuration
> DHCP > Interface Settings page.
Configure interfaces as trusted or untrusted in the IP Configuration > DHCP >
DHCP Snooping Interface page.
Optional. Add entries to the DHCP Snooping Binding database in the IP
Configuration > DHCP > DHCP Snooping Binding Database page.
Default State
Enabled
Not enabled
Not enabled
Enabled
Not enabled
Disabled
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