transmitted. 
• Rx and Tx Release 
The number of release (option 53 with value 7) packets received 
and transmitted. 
• Rx and Tx Inform 
The number of inform (option 53 with value 8) packets received 
and transmitted. 
• Rx and Tx Lease 
Query 
The number of lease query (option 53 with value 10) packets 
received and transmitted. 
• Rx and Tx Lease 
Unassigned 
The number of lease unassigned (option 53 with value 11) 
packets received and transmitted. 
• Rx and Tx Lease 
Unknown 
The number of lease unknown (option 53 with value 12) packets 
received and transmitted. 
• Rx and Tx Lease 
Active 
The number of lease active (option 53 with value 13) packets 
received and transmitted. 
 
Buttons 
Auto-refresh  : Check this box to enable an automatic refresh of the page at regular intervals. 
: Click to refresh the page immediately. 
: Clears the counters for the selected port. 
 
 
4.12.10 IP Source Guard Configuration 
IP Source Guard is a secure feature used to restrict IP traffic on DHCP snooping untrusted ports by 
filtering traffic based on the DHCP Snooping Table or manually configured IP Source Bindings. It helps 
prevent IP spoofing attacks when a host tries to spoof and use the IP address of another host. This page 
provides IP Source Guard related configuration. The IP Source Guard Configuration screen in Figure 
4-12-10 appears.