Chapter 4: Web configuration 
NS3552-8P-2S-V2 User Manual  79 
Object  Description 
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. 
RX Discarded Checksum 
Error 
The number of discarded packets where IP/UDP checksum is in 
error. 
RX Discarded from 
Untrused 
The number of discarded packets that are coming from an untrusted 
port. 
Buttons 
•  Select the Auto-refresh check box to refresh the page automatically. Automatic 
refresh occurs every three seconds. 
•  Click Refresh to refresh the page immediately. 
•  Click Clear to clear the counters for the selected port. 
UDLD 
The UDLD Port Configuration page permits the user to inspect and change the current 
Unidirectional Link Detection (UDLD) configurations.