User's Manual

81
H8951
-
NA1
3G/4G Router User
Manual
GRE (Generic Routing Encapsulation, Generic Routing protocol encapsulation) specifies
how to use a network protocol to another network protocol encapsulation method. The
main purpose of the GRE protocol, there are two: internal protocol encapsulation and
private address encapsulation.
IPIP tunnel is a simple agreement between two routers for IP packet encapsulation, IPIP
tunnel interface will be like a physical interface in the interface list, many routers including
Cisco, basically support the agreement. This agreement enables multiple network
distribution possible.
Step 1 Log-on WEB GUI of H8951-NA Cellular Wi-Fi Router.
Step 2 Click “VPN > Tunnel” to open “Tunnel” tab.
Step 3 Click “Add” to add a new tunnel.
Figure 5-45 Tunnel configuration
Configure Tunnel rule parameter
Table 5-29 Tunnel rule parameter instruction
Parameter Details Operation
IP Tunnel
Service
To enable or disable IP tunnel
service
Click “Enable”
Basic Settings
Tunnel name
Name of the tunnel, cannot be
modified after save
Input the name of tunnel
Tunnel Mode Tunnel mode:

gre

ipip
Select from Dropdown List