This talk describes how MPLS Layer 2 Transport, Layer 2 VPNs, BGP/MPLS Layer 3 VPNs and VPLS can be built and deployed over an IP only core. The motivations are: a) In some network designs transit routers may not support MPLS b) Transition from non-MPLS to MPLS and c) The desire not to run LDP. This presentation describes how MPLS over IP, GRE, IPsec or L2TPv3 can be used for deploying MPLS VPN services, in such cases.

Procedures for encapsulating MPLS in IP, GRE , IPsec and L2TPv3 tunnels are described. Dynamic creation of these tunnels to the BGP next-hops of the VPN routes is also described. The security ramifications of MPLS VPNs over these various tunnels are discussed. The use of IPsec authentication and/or encryption for providing additional security while transporting MPLS VPN packets over non-MPLS networks is described.

The presentation compares the use of MPLS over IP, GRE, IPSec and L2TPv3 for such applications as MPLS Pseudowires, VPLS, and BGP/MPLS VPNs. Either LDP, RSVP-TE or L2TPv3 can be used as a signaling protocol for Pseudowires. The presentation also compares these protocols for pseudowire signaling.

The talk will also give an overview of the IETF work in this area.

Bio:
Rahul Aggarwal is with the IP routing and MPLS engineeering group at Juniper Networks. He contributes to the design and development of MPLS TE, Layer 3 and Layer 2 VPNs, multicast and routing. Prior to joining Juniper Networks he was with the SmartEdge IP routing group at Redback Networks. He was one of the leading architects and developers of the MPLS implementation on the SmartEdge 800 Router.

Prior to joining Redback Networks, he was at Fore Systems between 1998 and 2000, where he worked on the development of OSPF, MPLS and TE. He received a B.E. in Electronics and Communication from Indian Institute of Technology, Roorkee in 1996. He received his M.S. in Computer Science from University of Minnesota in 1998. His Graduate Research was focussed on QoS and stored video delivery across resource constrained networks.

His professional interests include routing and signaling development, IP and MPLS system and forwarding design, packet classification, VPNs, subscriber management, QoS and Traffic Engineering. He is very active in various IETF working groups and conferences.