User's Manual

115
H8951
-
NA1
3G/4G Router User
Manual
Figure 6-4 Parameter select setting 2
When L2TP link is working for some reason disconnected from the server, the router will
perform parameter switching in Command "check icmp", through IP ping to detect
whether router interrupt with network operators; after 3 IP ping fails, the router will
switch to the PPTP link, connecting to maintain the server, continue to work.
Effect
Initially using L2TP link, then set L2TP connection is disconnected manually, the router
after 3 ping 192.168.100.1, after the link failed, the link will switch to the L2TP and
maintaining connection to the server.
6.4 VPN
Introduction
VPN, virtual private network, a technology based on Internet, now H8951-NA Cellular
Wi-Fi Router supports L2TP/PPTP/GRE/IPIP/IPSec/OpenVPN of VPN.
L2TP used to build a virtual private network, after H8951-NA Cellular Wi-Fi Router connect
to company NAS server, PC under H8951-NA could visit company network like visiting the
local area network.
Let us check a setting example: