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Data Interfaces MDM6000 Satellite Modem
13.2.1 Virtual IP Address
Use virtual IP addresses when working with device redundancy and a USS (Newtec's Universal
Switching System).
The virtual IP addresses are configured on the main device. These are automatically synchronized to
the stand-by (spare) device. The moment the main device goes into alarm the stand-by device
inherits the IP address of the main modem. A gratuitous ARP (Address Resolution Protocol) Reply is
sent to the Ethernet switch in order to update it's MAC table and reroute the traffic to the correct port.