Configuring Routing Via Tunnel; Configuring The Keepalive Function - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Table 3-7 Set identification key of the tunnel interface
Set identification key of the tunnel
interface.
Cancel the identification key of tunnel
interface.
The key-number parameter is an integer in the range 0 to 4294967295.
By default, tunnel does not use KEY.

3.2.8 Configuring Routing via Tunnel

Tunnel route, either static or dynamic, must exist on both the source router and the
destination router, so that GRE packets can be forwarded properly.
I. Configuring static routing
You may manually configure a route to the destination address, which is the destination
address of the packet without GRE encapsulation rather than the destination address
of the tunnel, with the next hop being the address of the remote tunnel interface
address. This configuration is required at both ends of the tunnel. For details about this
configuration, refer to the part "Static Routing Configuration" of this manual. For
detailed descriptions on the configuration commands, refer to the Command Manual
accompanying this manual.
II. Configuring dynamic routing
If dynamic routing protocol is running on the router, you may simply enable this protocol
on both the tunnel interface and the router interface directly connected to the private
network. This configuration is required on both ends of the tunnel. For details about this
configuration, refer to the part "Dynamic Routing Configuration" of this manual. For
detailed descriptions on the configuration commands, refer to the Command Manual
accompanying this manual.

3.2.9 Configuring the keepalive function

Perform the following configuration in tunnel interface view.
Table 3-8 Configure the keepalive function
Enable the keepalive function of GRE.
Disable the keepalive function of GRE.
Operation
Operation
3Com Corporation
3-8
Chapter 3 Configuration of GRE
Command
gre key key-number
undo gre key
Command
keepalive interval times
undo keepalive [ seconds ] [ times ]