Tripp Lite B093-004-2E4U-V Owner's Manual

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• On the Management LAN Interface, conﬁgure the IP Address, Subnet Mask and Gateway the same as you used for

Network Interface.

In this mode, Management LAN Interface is available as the transparent back-up port to Network Interface for accessing

the management network. In the event Network Interface becomes unavailable, Management LAN Interface will

automatically and transparently take over the work of Network Interface.

Notes: Only SSH access is enabled on the failover connection. In ﬁrmware versions later than 3.0.2, HTTPS access is also enabled so the

administrator can connect to the console server using SSH (or HTTPS) to ﬁx the problem.

By default, the advanced console server supports automatic failure-recovery back to the original state prior to failover (ﬁrmware version

3.1.0 and later). The advanced console server continually pings probe addresses while in original and failover states. The original state will

automatically be set as a priority and reestablished following three successful pings of the probe addresses during failover. The failover state

will be removed once the original state has been re-established.

For ﬁrmware pre-V3.1.0, the advanced console server does not support automatic failure-recovery back to the original state prior to the

failover. To restore networking to a recovered state, the following command needs to be run:

rm -f /var/run/*-failed-over && conﬁg -r ipconﬁg

If required, you can run a custom bash script when the device fails over. It is possible to use this script to implement automatic failure

recovery, depending on your network setup. The script to create is:

/etc/conﬁg/scripts/interface-failover-alert

5.6 Cellular Modem Connection

The B093 and B098 family of advanced console servers support internal cellular modems. These modems ﬁrst need to be

installed (see section 5.6.1) and then set up to validate they can connect to the carrier network (described in 5.6.4 and

5.6.5). They then can be conﬁgured for operation in Always- on cellular router or OOB mode, or in Failover mode (detailed in

next section 5.7).

5. Firewall, Failover and OOB Access

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Tripp Lite B093-004-2E4U-V 4-Port Console Server with 4G LTE Cellular Gateway, Dual GbE NIC, 4Gb Flash and Dual SIM