Tripp Lite B098048 Owners Manual for B093- B097- and B098-Series Console Serve - Page 84

5. Firewall, Failover and OOB Access • 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). 84