Ursalink UR51 Industrial Cellular Router User Guide
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<strong>UR51</strong> <strong>User</strong> <strong>Guide</strong><br />
GRE<br />
Item<br />
Enable<br />
Remote IP Address<br />
Local IP Address<br />
Local Virtual IP Address<br />
Netmask<br />
Peer Virtual IP Address<br />
Global Traffic<br />
Forwarding<br />
Remote Subnet<br />
Remote Netmask<br />
Description<br />
Check to enable GRE function.<br />
Enter the real remote IP address of GRE tunnel.<br />
Set the local IP address.<br />
Set the local tunnel IP address of GRE tunnel.<br />
Set the local netmask.<br />
Enter remote tunnel IP address of GRE tunnel.<br />
All the data traffic will be sent out via GRE tunnel when this<br />
function is enabled.<br />
Enter the remote subnet IP address of GRE tunnel.<br />
Enter the remote netmask of GRE tunnel.<br />
MTU Enter the maximum transmission unit. Range: 64-1500.<br />
Key<br />
Enable NAT<br />
Set GRE tunnel key.<br />
Enable NAT traversal function.<br />
Table 4-2-8-4 GRE Parameters<br />
4.2.8.4 L2TP<br />
Layer Two Tunneling Protocol (L2TP) is an extension of the Point-to-Point Tunneling Protocol<br />
(PPTP) used by an Internet service provider (ISP) to enable the operation of a virtual private<br />
network (VPN) over the Internet.<br />
Figure 4-2-8-5<br />
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