References

http://www.cisco.com/go/dmvpn

http://www.cisco.com/en/US/products/ps6635/prod_white_papers_list.html

http://www.cisco.com/en/US/tech/tk583/tk372/technologies_white_paper09186a008018983e.shtml

http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080455c71.html

http://www.cisco.com/en/US/netsol/ns676/networking_solutions_white_paper0900aecd805bbf96.shtml

http://www.cisco.com/en/US/products/ps6350/products_configuration_guide_chapter09186a0080455c71.html