HIKVISION DS-7604NI-E1 User Manual page 146

User Manual of Network Video Recorder
You can select one NIC card as default route. And then the system is connecting with the extranet the data will be
forwarded through the default route.
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 11. 2 Net Fault-tolerance Working Mode
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