Digi TransPort WR11 User Manual page 269

Configuring network interfaces
Use IP Address:
A virtual host IP address for the local end of the tunnel, configured for routing purposes. This IP
address has no other use and needs no mask as it is a host address, such as 1.1.1.1. Normally,
use this option in conjunction with IPSec. Do not use this parameter if the interface is selected
as the source using the Use Interface options above.
Destination IP Address or Hostname
The FQDN or IP address of the remote end of the tunnel. This could also be the virtual host IP
address for the remote end of the tunnel, configured for routing purposes. such as 2.2.2.2.
Enable keepalives on this GRE tunnel
Enables or disables the GRE keepalive parameters. Keepalives are needed so allow the router
to determine whether the tunnel interface is receiving traffic correctly or not. If keepalives fail,
the tunnel is marked as down.
Send a keepalive every s seconds
When configured to a non-zero value, keepalive packets is sent to the remote end of the tunnel
and the response is monitored to detect if the tunnel is up or down. If the tunnel is detected as
down, the routing table metric will be altered. Value is configured in seconds. If this value is set
to 0, the router does not use keepalives.
Bring this GRE tunnel down after no replies to n keepalives
The consecutive number of keepalive packets that need to fail before the tunnel is detected as
being down.
Bring this GRE interface up to send keepalives
Whether or not the GRE keepalive packets will activate the tunnel. If set to YES and the tunnel
drops the GRE keepalive packet will try to raise the tunnel again. If set to NO and the tunnel
has been marked as down due to the GRE keepalives not being received, the router will only
raise the tunnel if a packet (other than a GRE keepalive) needs to be routed.
VRF
Associates the interface with a particular VRF.
Destination VRF
Associates the interface with a particular destination VRF.
3. Click Apply.
Command line
Command Instance
tun n
tun n
Digi TransPort® Routers User Guide
Configure Generic Routing Encapsulation (GRE) interfaces
Parameter Values
descr Free text field
IPaddr Valid IP
address
Equivalent web parameter
Description
IP Address
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