Digi TransPort WR11 User Manual page 376

Configuring network interfaces
specified destination. Heartbeat packets are UDP packets containing information about the
router and which may include status information for locating its current dynamic IP address.
Heartbeats can also contain GPS position information and mobile telephone module
information.
Send Heartbeat messages to IP address a.b.c.d every h hrs, m minutes, s secs
The left-hand text box contains the IP address of the destination for the heartbeat packets.
The remaining text boxes specify the desired interval between sending heartbeat packets.
Use interface x,y for the source IP address
Select of the source interface for the UDP heartbeats. Selecting an Ethernet source allows the
packets to follow the routing table instead of being sent out from the PPP interface on which
they are set.
Select transmit interface using the routing table
When enabled, causes the router to choose the best route from the routing table. If unchecked,
the exit interface will be the interface on which the heartbeat is configured.
Include IMSI information in the Heartbeat message
When enabled, causes the router to include the IMSI of the wireless modem module in the
heartbeat packet.
Include GPS information in the Heartbeat message
When enabled, causes the router to include the GPS co-ordinates in the heartbeat packet.
Generate Ping packets on this interface
When enabled, this setting causes the router to reveal the configuration parameters that
enable the sending of ICMP echo request (ping) packets. You can use this feature as part of a
backup interface strategy.
Send n byte pings to IP host a.b.c.d every h hrs, m mins, s secs
Controls how the ICMP echo requests are generated. The value in the left-hand text box
specifies the number of data bytes in the echo request. Typical values are 32 or 64 octets. The
IP host text box specifies the IP address of the host to which the ping packets are sent. The
remaining parameters specify how often the ping should be sent.
Send pings every h hrs, m mins, s seconds if ping responses are not being received
These three text boxes specify the interval at which to send pings when more than one ping
request is outstanding. When left at the default of 0, this function is disabled.
Switch to sending pings to IP host a.b.c.d after n failures
These parameters allow for more reliable problem detection before failover occurs. If the value
in the first text box is a valid IP address, and the value in the second text box is greater than 0,
when a ping failure is detected on the primary host address, this secondary host is tried. This is
to ensure that should the primary host become unavailable for any reason and stops
responding to the ICMP echo requests, the router will check an alternative IP address before
initiating the failover procedure. The value in the second text box is the number of pings that
should be allowed to fail before checking the secondary IP address.
Digi TransPort® Routers User Guide
Configure PPP and external modems
376