3D Innovations 3.0.1 appendix Configuration of GRE

Appendix B Site-to-Site VPN User Interface Reference

Site to Site VPN Policies

			Table B-22describes the elements on the GRE Modes page for configuring a
			DMVPN policy.
Table B-22		GRE Modes Page > DMVPN Policy
	Element			Description
	Routing Parameters Tab
	Routing Protocol			Select the required dynamic routing protocol, or static route, to be
				used in the DMVPN tunnel.
				Options include the EIGRP, OSPF, and RIPv2 dynamic routing
				protocols, and GRE static routes. On-DemandRouting (ODR) is
				also supported. On-Demand Routing is not a routing protocol. It can
				be used in a hub-and-spoke VPN topology when the spoke routers
				connect to no other router other than the hub. If you are running
				dynamic protocols, On-Demand Routing is not suitable for your
				network environment.
				For more information, see Prerequisites for Successful
				Configuration of GRE, page 9-87.
	AS Number			Available only if you selected the EIGRP routing protocol.
				The number that is used to identify the autonomous system (AS)
				area to which the EIGRP packet belongs. The range is 1-65535. The
				default is 110.
				An autonomous system (AS) is a collection of networks that share
				a common routing strategy. An AS can be divided into a number of
				areas, which are groups of contiguous networks and attached hosts.
				Routers with multiple interfaces can participate in multiple areas.
				An AS ID identifies the area to which the packet belongs. All
				EIGRP packets are associated with a single area, so all devices must
				have the same AS number.
	Process Number			Available only if you selected the OSPF routing protocol.
				The routing process ID number that will be used to identify the
				secured IGP that Security Manager adds when configuring
				DMVPN.
				The valid range for either protocol is 1-65535. The default is 110.
				User Guide for Cisco Security Manager 3.0.1
	OL-8214-02				B-65