MPLS

Multiprotocol Label Switch...( label swaping and switching )
1. based on tags or identifiers associated with each packet.
2. at each hop, based on the incoming label and dispatched onward with a new label.
3. 20-bit label
4. Lable Switching Router maintained a Lable Forwarding Information Base.

Traditional IP routing
1. a form of packet switching - eache packet carries a destination Ip address that can be used to determined the next hop.