Cisco ROUTER-SDM-CD User Manual page 256

Create Site to Site VPN
Create a Site-to-Site VPN
Create a Secure GRE Tunnel (GRE-over-IPSec)
What Do You Want to Do?
If you want to:
Configure the router as part of a
connecting two routers.
When you configure a VPN network between two
routers, you can control how the remote router is
authenticated, how traffic is encrypted, and what
traffic is encrypted.
Configure a GRE tunnel between your router and
another router.
You may want to configure a GRE tunnel if you need
to connect networks that use different LAN
protocols, or if you need to send routing protocols
over the connection to the remote system.
Cisco Router and Security Device Manager 2.5 User's Guide
11-2
If you want to learn more about VPN technology, there is background information
at the link More About
This option allows you to create a VPN network connecting two routers.
This option allows you to configure a generic routing encapsulation protocol
(GRE) tunnel between your router and a peer system.
VPN network
VPN.
Do this:
Select Create a site-to-site VPN . Then click
Launch the selected task.
Select Create a Secure GRE tunnel
(GRE-over-IPSec). Then click Launch the
selected task.
Chapter 11 Site-to-Site VPN
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