User Manual of Digital Video Recorder 
 
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Figure 9. 5 Load Balance Working Mode 
 
Net Fault-tolerance Mode: The two NIC cards use the same IP address, and you can select the Main NIC to 
LAN1 or LAN2. By this  way, in  case  of one NIC  card  failure, the device  will automatically enable the other 
standby NIC card so as to ensure the normal running of the whole system. 
 
Figure 9. 6 Net Fault-tolerance Working Mode