Chapter8 Site-to-Site VPN
Create Site to Site VPN
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Cisco Router and Security Device Manager Version 2.2 User’s Guide
OL-4015-08
Routing Information
This window enables you to configure routing for the tunnele d traffic. Information
that you add in this window appears in the Routing window. Changes that you
make in the Routing window may affect routing of VPN traffic. Configuring
routing enables you to specify the networks that will participate in the
GRE-over-IPSec VPN. Additionally, if you configure a backup GRE-over-IPSec
tunnel, the keepalive packets sent by routing protocols allow the router to
determine whether the primary tunnel has failed.
Select a dynamic routing protocol if this router is being used in a large VPN
deployment with a large number of networks in the GRE over IPS ec VPN. Select
static routing if a small number of networks will participate in the VPN.

EIGRP

Check this box to use the Enhanced Interior Gateway Routing Protocol (EIGRP)
protocol to route traffic. Then click Next to specify which networks will
participate in the GRE-over-IPSec VPN in the Routing Information window.

OSPF

Check this box to use the Open Shortest Path First protocol (OSPF) to route
traffic. Then click Next to specify which networks will participate in the
GRE-over-IPSec VPN in the Routing Information window.

RIP

Check this box to use the Routing Information Protocol(RIP) to route traffic. Then
click Next to specify which networks will participate in the GRE-over-IPSec VPN
in the Routing Information window.
Note This option is not available when you configure a backup GRE-over-IPSec tunnel.