VRF Route Leaking

BGP approach

How to Import IP Prefixes from Global Table into a VRF Table

This section contains the following tasks:

•Defining IPv4 IP Prefixes to Import

•Creating the VRF and the Import Route Map

•Filtering on the Ingress Interface

•Verifying Global IP Prefix Import 

Ref: http://www.cisco.com/en/US/docs/ios/12_2s/feature/guide/fs_bgivt.html
http://www.cisco.com/en/US/docs/ios/12_3t/ip_route/command/reference/ip2_i1gt.html
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t14/feature/guide/gt_bgivt.html#wp1054941
http://www.cisco.com/en/US/docs/ios/12_2/qos/configuration/guide/qcfpbr_ps1835_TSD_Products_Configuration_Guide_Chapter.html

Static approch

Route Leaking in MPLS/VPN Networks

ip route 10.0.2.0 255.255.255.252 Serial2/0
ip route vrf vpn2 10.1.2.4 255.255.255.252 Serial1/0

Ref: http://www.cisco.com/en/US/tech/tk436/tk832/technologies_configuration_example09186a0080231a3e.shtml#global

inter-VRF

http://chetanress.blogspot.com/2010/08/importing-routes-from-global-table-into.html

http://blog.ipexpert.com/2010/12/01/vrf-route-leaking/

http://mynetworkingwiki.com/index.php/Advanced_VRF_Import_and_Export_Features

http://packetlife.net/blog/2010/mar/29/inter-vrf-routing-vrf-lite/

http://packetlife.net/blog/2009/apr/30/intro-vrf-lite/