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H8922 3G/4G Router User Manual
Figure 6-7
The configuration of parameter select 2
When the working L2TP link is disconnected from the server for some reason, the router performs the param-
eter "check icmp" in the parameter switch, and pings the configured destination IP to detect whether the router
is disconnected from the network operator. After failing to ping the destination IP address three times, the
router will switch to the PPTP link, maintain the connection with the server, and continue to work.
Application result
Initially, the PPTP link is used, and then the L2TP connection is disconnected. After the ping 192.168.100.1 fails,
the router switches to the L2TP link and maintains the connection with the server, as shown in Figure 6-8.
Figure 6-8
The result of parameter select
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