DHCP Snooping Statistics

When DHCP servers are allocating IP addresses to requesting clients, DHCP snooping can further strengthen the security on the LAN by allowing only clients with specific IP/MAC addresses.

To view the DHCP snooping statistics:

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 Firewall menu from the left-hand side of the UI.
6. Select DHCP Snooping.
   The Statistics > Controller > Firewall > DHCP Snooping screen displays in the right-hand pane.

   

   

   This screen displays the following information:

   MAC Address	Displays the MAC address of the client.
   Node Type	Displays the NetBios node with an IP pool from which IP addresses can be issued to client requests on this interface.
   IP Address	Displays the IP address used for DHCP discovery and requests between the DHCP server and DHCP clients.
   Netmask	Displays the subnet mask used for DHCP discovery and requests between the DHCP server and DHCP clients.
   VLAN	Displays the controller or service platform virtual interface ID used for a new DHCP configuration.
   Lease Time	When a DHCP server allocates an address for a requesting DHCP client, the client is assigned a lease (which expires after a designated interval defined by the administrator). The lease is the time an IP address is reserved for re-connection after its last use. Using short leases, DHCP can dynamically reconfigure networks in which there are more computers than available IP addresses. This is useful, for example, in education and customer environments where client users change frequently. Use longer leases if there are fewer users.
   Time Elapsed since Last Update	Displays the amount of time elapsed since the DHCP server was last updated.

7. Select Clear All to revert the counters to zero and begin a new data collection.
8. Select Refresh to update the screen's counters to their latest values