Ok, since my last (not the first) attempt wasn't so good , I am planing to read a few book from CISCO recommendation list and post the summary here.
I will start with: Advanced MPLS Design and Implementation:
Chapter 1:
MPLS is an improved method for forwarding packets through a network using information contained in labels attached to IP packets. The labels are inserted between the Layer 3 header and the Layer 2 header in the case of frame-based Layer 2 technologies, and they are contained in the virtual path identifier (VPI) and virtual channel identifier (VCI) fields in the case of cell-based technologies such as ATM.
Benefits of MPLS - VPN's (solves the issues with IPsec (have a very high overhead and are slow and not scalable)), Traffic Engineering, QoS, Integration IP and ATM, simplify the deployment of IPv6,
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