Multiprotocol Label Switching is the protocol framework on

which the attention of network service provider is focused as it

provides privacy and unbreakable security to the users. So, it is

used by ISP Backbone Network to form the MPLS Tunneling

architecture like MPLS VPN which is discussed in this paper.

Providers typically offer this type of service to large corporate

customers that require IP connectivity of other remote sites. The

main advantage is that MPLS is used over Layer 2 and Layer 3

protocols. It also discusses the concept of Traffic Engineering

that utilizes Multiprotocol Label Switching and that also proves

to be advantageous over IP based Routing. This Paper also

discusses various Encryption Techniques which can be used for

the security of MPLS Technology