Cisco Systems MPC-273 manual MPC-286, Detailed Steps, Command or Action, Purpose, Example

Implementing MPLS VPNs over IP Tunnels on Cisco IOS XR Software

How to Configure MPLS VPNs over IP Tunnels

DETAILED STEPS

	Command or Action		Purpose
Step 1
	configure		Enters global configuration mode.
	Example:
	RP/0/0/CPU0:router# configure
Step 2
	router bgp autonomous-system-number		Enters Border Gateway Protocol (BGP) configuration mode
			allowing you to configure the BGP routing process.
	Example:
	RP/0/0/CPU0:router(config)# router bgp 120
	RP/0/0/CPU0:router(config-bgp)#
Step 3
	address-family {ipv4 tunnel}		Configures IPv4 tunnel address family.
	Example:
	RP/0/RP0/CPU0:router(config-bgp)#
	address-family ipv4 tunnel
	RP/0/0/CPU0:router(config-bgp-af)#
Step 4
	address-family {vpnv4 unicast}		Configures VPNv4 address family.
	Example:
	RP/0/0/CPU0:router(cconfig-bgp-af)#
	address-family vpnv4 unicast
Step 5
	neighbor ip-address		Places the router in neighbor configuration mode for BGP
			routing and configures the neighbor IP address
	Example:		172.168.40.24 as an ASBR eBGP peer.
	RP/0/0/CPU0:router(config-bgp-af)# neighbor
	172.168.40.24
	RP/0/0/CPU0:router(config-bgp-nbr)#
Step 6
	remote-asautonomous-system-number		Creates a neighbor and assigns it a remote autonomous
			system number.
	Example:
	RP/0/0/CPU0:router(config-bgp-nbr)# remote-as
	2002
Step 7
	address-family {vpnv4 unicast}		Configures VPNv4 address family.
	Example:
	RP/0/0/CPU0:router(config-bgp-nbr)#
	address-family vpnv4 unicast
	RP/0/0/CPU0:router(config-bgp-nbr-af)#
Step 8
	route-policyroute-policy-name {in}		Applies a routing policy to updates that are received from a
			BGP neighbor.
	Example:		• Use the route-policy-nameargument to define the name
	RP/0/0/CPU0:router(config-bgp-nbr-af)#		of the of route policy. The example shows that the route
	route-policy pass-all in		policy name is defined as pass-all.
			• Use the in keyword to define the policy for inbound
			routes.
		Cisco IOS XR MPLS Configuration Guide
MPC-286			OL-12284-01