Cisco Systems 520 series manual Configure a GRE Tunnel, 192.168.101.1

Chapter 7 Configuring VPNs Using an IPsec Tunnel and Generic Routing Encapsulation

Configure a GRE Tunnel

	Command or Action	Purpose
Step 2
	crypto map map-name	Applies the crypto map to the interface.
	Example:	See the Cisco IOS Security Command Reference
		for more detail about this command.
	Router(config-if)#crypto map static-map
	Router(config-if)#
Step 3
	exit	Enters global configuration mode.
	Example:
	Router(config-if)# exit
	Router(config)#

Configure a GRE Tunnel

Perform these steps to configure a GRE tunnel, beginning in global configuration mode:

	Command or Action	Purpose
Step 1
	interface type number	Creates a tunnel interface and enters interface
		configuration mode.
	Example:
	Router(config)# interface tunnel 1
	Router(config-if)#
Step 2
	ip address ip-address subnet mask	Assigns an address to the tunnel.
	Example:
	Router(config-if)#ip address 10.62.1.193
	255.255.255.255
	Router(config-if)#
Step 3
	tunnel source interface-type number	Specifies the source endpoint of the router for the
		GRE tunnel.
	Example:
	Router(config-if)# tunnel source
	fastethernet 0
	Router(config-if)#
Step 4
	tunnel destination default-gateway-ip-address	Specifies the destination endpoint of the router for
		the GRE tunnel.
	Example:
	Router(config-if)# tunnel destination
	192.168.101.1
	Router(config-if)#

Cisco Secure Router 520 Series Software Configuration Guide

7-8 OL-14210-01