Cisco Systems 2.5 Add or Edit GRE Tunnel

Chapter6 Edit Interface/Connection
Add or Edit GRE Tunnel
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Cisco Router and Security Device Manager 2.5 User’s Guide
OL-4015-12
The Clock Settings button appears only if you are configuring a T1 or E1 serial
connection.
Dynamic DNS
Enable dynamic DNS if you want to update your DNS servers automatically
whenever the WAN interface IP address changes.
Note This feature appears only if supported by the Cisco IOS release on your router.
To choose a dynamic DNS method to use, do one of the following:
•Enter the name of an existing dynamic DNS method.
Enter the name in the Dynamic DNS Method field exactly as it appears in the
list in Configure > Additional Tasks > Dynamic DNS Methods.
•Choose an existing dynamic DNS method from a list.
Click the drop-down menu and choose an existing method. A window with a
list of existing dynamic DNS methods opens. This menu choice is available
only if there are existing dynamic DNS methods.
•Create a new dynamic DNS method.
Click the drop-down menu and choose to create a new dynamic DNS method.
To clear an associated dynamic DNS method from the interface, choose None
from the drop-down menu.
Add or Edit GRE Tunnel
You can add a GRE tunnel to an interface or edit an existing interface in this
window. This window does not appear if the GRE tunnel is not configured using
gre ip mode.
Tunnel Number
Enter a number for this tunnel.