Cisco Systems C819GUK9 Creates a tunnel interface and enters interface, GRE tunnel, 9-18, Purpose

Chapter 9 Configuring Security Features

Configuring VPN

DETAILED STEPS

	Command or Action	Purpose
Step 1
	interface type number	Creates a tunnel interface and enters interface
	Example:	configuration mode.
	Router(config)# interface tunnel 1
	Router(config-if)#
Step 2
	ip address ip-address mask	Assigns an address to the tunnel.
	Example:
	Router(config-if)# 10.62.1.193
	255.255.255.252
	Router(config-if)#
Step 3
	tunnel source interface-type number	Specifies the source endpoint of the router for the
	Example:	GRE tunnel.
	Router(config-if)# tunnel source
	fastethernet 0
	Router(config-if)#
Step 4
	tunnel destination	Specifies the destination endpoint of the router for
	default-gateway-ip-address	the GRE tunnel.
	Example:
	Router(config-if)# tunnel destination
	192.168.101.1
	Router(config-if)#
Step 5
	crypto map map-name	Assigns a crypto map to the tunnel.
	Example:	Note	Dynamic routing or static routes to the
			tunnel interface must be configured to
	Router(config-if)# crypto map static-map
			establish connectivity between the sites.
	Router(config-if)#
Step 6
	exit	Exits interface configuration mode and returns to
	Example:	global configuration mode.
	Router(config-if)# exit
	Router(config)#
Step 7
	ip access-list {standard extended}	Enters ACL configuration mode for the named
	access-list-name	ACL that is used by the crypto map.
	Example:
	Router(config)# ip access-list extended
	vpnstatic1
	Router(config-acl)#

	Cisco 819 Series Integrated Services Routers Software Configuration Guide
9-18	OL-23590-02