Sierra Wireless 20070914 manual Keepalive, AceManager PPP/Ethernet

Data Communication and Host Modes

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

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