Keepalive – Sierra Wireless RAVEN 20070914 User Manual
Page 67
Data Communication and Host Modes
Rev 3.0B Feb.08
62
Figure 6-6: AceManager : PPP/Ethernet
•
*HOSTPRIVMODE ‐ Set to 1 to enable the explicit IP
addresses.
•
*HOSTPRIVIP ‐ Set to the IP address you want the Raven
to give to your device.
•
*HOSTPEERIP ‐ Set to the IP address you want for the
Raven.
•
*HOSTNETMASK ‐ Set to the subnetmask, generally
255.255.255.0.
Tip: If you are using Private Mode (*HOSTPRIVMODE=1), you will
need to make sure that *HOSTPRIVIP and *HOSTPEERIP are on the
same subnet. If the subnet mask is 255.255.255.0, it is safe to use
192.168.x.y for each as long as the x is the same number (0 in the
example screen shot above) and the y is different (1 and 2 in the
example) and between 0 and 254.
Keepalive
Keepalive is used to test the connection to the cellular network
by pinging an IP address after a specified period of inactivity.
Keepalive is only recommended for users who have a remote
terminated modem that infrequently communicates to the
network or if you have experienced issues over time where the
modem can no longer be reached remotely.
When Keepalive pings the IP address, an acknowledgement
indicates there is an active connection to the network. If the
Raven does not receive a response from the IP address, it will
make additional attempts according to a backoff algorithm
before determining the Internet connection is not functioning