Proroute GEM420 4G M2M Router
GEM420 User Manual
140
3.2.3.4.4 GRE rule Configuration
1.
Tunnel Name:
The name of this GRE tunnel.
2.
Interface:
Choose WAN interface for GRE tunnel.
3.
Operation Mode:
Default is “Always on” and other options depend on product
models.
4.
Tunnel IP:
The gateway IP address of Business Security Gateway.
5.
Remote IP:
Enter the IP address of remote peer that you want to connect.
6.
Key:
Enter the password to establish GRE tunnel with remote host.
7.
TTL:
Time-To-Live for packets. The value is within 1 to 255. If a packet passes
number of TTL routers and still can't reach the destination, then this packet will
be dropped.
8.
Keep alive:
Choose the way to do connection keep alive. The keep alive is done
by sending ICMP request to a remote host. You need to enter the IP address of
remote host and define the time interval of sending ICMP requests.
9. Default Gateway/Peer Subnet:
You can choose “Default Gateway” option or
“Peer Subnet” option here. When “Default Gateway” is chosen, all traffic from
Intranet of Business Security Gateway goes over this GRE tunnel if these
packets don’t match the Peer Subnet of other GRE tunnels. There is only one
GRE tunnel to own the “Default Gateway” property. However, when “Peer
Subnet” is chosen, peer subnet parameter needs to be filled and it should be the
LAN subnet of remote GRE server. If an Intranet packet wants to go to this peer
subnet, the GRE tunnel will be established automatically.
10.
DMVPN Spoke:
Check this checkbox to enable DMVPN spoke function.
