Failover/Load Balance - Cradlepoint MBR1200 Product Manual

MBR1200 | USER MANUAL Firmware ver. 1.6.12
CRADLEPOINT

5.2 Failover/Load Balance

The MBR1200 can establish an uplink via the ethernet WAN port or any modems
plugged into the USB, ExpressCard or CardBus ports. Although all of these devices
may be plugged in, only one of them establishes a link at a time unless load balancing
is enabled. If the WAN connection fails the router will automatically attempt to bring up a
new link on another device. This feature is called failover. You can also manually
disconnect and re-connect specific ports using icons in the Control column. The priority
table can be saved permanently via the Save button. Priority changes take effect
immediately even if they are not saved.
5.2.1 Ethernet WAN Failure Detection
WAN failure detection works by detecting the presence of traffic on the ethernet WAN
link. (Note that this only applies to the ethernet WAN link, not the modems.) If the link is
idle for too long the router will attempt to ping a target IP address. If the ping does not
reply, the router assumes the link is down and attempts to fail over to a modem.
Enable. This enables failure detection on the Ethernet link. Even when this is disabled,
unplugging the Ethernet cable at the WAN port will trigger failover to a modem.
Timeout. Enter in this field the length of time that the ping target may be unresponsive
before the MBR1200 will switch to the next failover connection.
Enable Ping on Idle. When enabled, the router will send a ping after the link idle
timeout. If the ping gets a reply, the router will restart the idle timer, otherwise it will
failover to a modem.
Ping Target. The default ping target is the router‟s gateway. You may specify a different
IP address as a target here.
Enable Failback. This enables the Ethernet WAN connection to be monitored for
usability. If the connection is usable, other WAN connections are disconnected and the
Ethernet WAN connection is used exclusively.
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