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Configure this interface on the downstream router to receive its network settings via DHCP. If failover is
required, configure the downstream router for failover between its primary interface and the Ethernet port
connected to the console server.
4.13.2 IP Passthrough Pre-Configuration
Prerequisite steps to enable IP Passthrough are:
Configure the Network Interface and applicable Management LAN interfaces with static network
settings.
Click Serial & Network: IP.
For Network Interface and where applicable Management LAN, select Static for
the Configuration Method and enter the network settings (see the section entitled
Network Configuration for detailed instructions).
For the interface connected to the downstream router, you may choose any
dedicated private network – this network will only exist between the console server
and downstream router and will not normally be accessible.
For the other interfaces, configure as you would normally on the local network.
For both interfaces, leave Gateway blank.
Configure the Black Box modem in Always On Out-of-band mode
For a cellular connection, click System: Dial: Internal Cellular Modem.
Select Enable Dial-Out and enter carrier details such as APN (see the section
entitled Cellular Modem Connection for detailed instructions).
4.13.3 IP Passthrough Configuration
To configure IP Passthrough:
Click Serial & Network: IP Passthrough and check Enable.
Select the Modem to use for upstream connectivity.
Optionally, enter the MAC Address of downstream router’s connected interface.
Note If MAC address is not specified, the Console server will passthrough to the first downstream
device requesting a DHCP address.
Select the Ethernet Interface to use for connectivity to the downstream router.
Click Apply.
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