Network Virtualization

http://www.cisco.com

"How to Choose the Best Router Switching Path for Your Network" (explanation of FIB and adjacency table structure)

"Configuring MPLS on the Optical Service Module" (where the IOS VFI configuration is from)

"L2TPv3 Enables Layer 2 Services for IP Networks"

"Configuring MPLS Basic VPN with RIP on Customer Side"

"OSPF Support for MultiVRF on CE Routers"

"MPLS VPN support for EIGRP between Provider Edge (PE) and Customer Edge (CE)"

"Managing Security Contexts"

Books

Doraswamy, N. , and D. Harkins . IPsecThe New Security Standard for the Internet, Intranets and Virtual Private Networks. Prentice Hall, 1999.

Guichard, J. , and I. Pepelnjak . MPLS-VPN Architectures. Indianapolis: Cisco Press, 2002.