Viewing DHCP Binding Information

The DHCP Binding screen displays DHCP binding information such as expiry time, client IP addresses and their MAC address.

Controllers and service platforms build and maintain a DHCP snooping table (DHCP binding database). A controller or service platform uses the snooping table to identify and filter untrusted messages. The DHCP binding database keeps track of DHCP addresses assigned to ports, as well as filtering DHCP messages from untrusted ports. Incoming packets received on untrusted ports, are dropped if the source MAC address does not match the MAC in the binding table.

To view the DHCP binding information:

1. Select the Statistics menu from the Web UI.
2. Expand the System node from the navigation pane (on the left-hand side of the screen). The System node expands to display the RF Domains created within the managed network.
3. Expand the RF Domain node.
4. Select a Wireless Controller.
5. Expand the DHCP Server menu from the left-hand side of the UI.
6. Select Bindings.

   The Statistics > Controller > DHCP Server > Bindings screen displays by default in the right-hand pane.

   This screen displays the following:

   Expiry Time	Displays the expiration of the lease used by the devices requesting controller or service platform DHCP resources.
   IP Address	Displays the IP address of each listed device requesting DHCP services.
   DHCP MAC Address	Displays the MAC address of each device requesting DHCP services.

7. Select a table entry and select Clear to remove the client from the list of devices requesting DHCP services.
8. Select Clear All to remove all listed clients from the list of requesting clients.
9. Select the Refresh button to update the screen's statistics counters to their latest values.