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Configuring Security
Configuring DHCP Snooping
STEP 5
STEP 1
STEP 2
STEP 3
Cisco 220 Series Smart Plus Switches Administration Guide Release 1.0.0.x
•
Trusted Interface—Click Yes to trust the selected interface, or click No to
untrust the interface.
Configure the ports that are connected to a DHCP server or to other
NOTE
switches or routers as trusted ports. Configure the ports that are connected
to DHCP clients as untrusted ports.
•
Rate Limit (pps)—Check Enable to limit the rate on the interface. If rate limit
is enabled, enter the maximum number of rate that can be allowed on the
interface.
Click Apply. The DHCP Snooping trusted interface settings are defined, and the
Running Configuration is updated.
Querying DHCP Snooping Binding Database
Use the Binding Database page to query the DHCP Snooping binding database.
To query addresses that are bound to the DHCP Snooping database:
Click Security > DHCP Snooping > Binding Database.
Define any of the following fields as a query filter:
•
VLAN ID—Indicates the VLANs recorded in the DHCP database. The
database can be queried by VLAN.
•
MAC Address—Indicates the MAC addresses recorded in the DHCP
database. The database can be queried by MAC address.
•
IP Address—Indicates the IP addresses recorded in the DHCP database
The database can be queried by IP address.
•
Interface—Contains the interface by which the DHCP database can be
queried.
Click Go. The results appear in the Binding Database table, including that:
•
VLAN ID—VLAN ID to which the IP address is attached in the DHCP
Snooping Database.
•
MAC Address—MAC address found during the query.
•
IP Address—IP address found during the query.
•
Interface—Interface connected to the address found during the query.
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