Multiprotocol Label Switching - The Unprecedented Cult
Multi-Protocol Label Switching (MPLS) Testing Features
Have I desiged correctly my MPLS network? - Network Engineering Stack Exchange
What the heck is MPLS? - Network Angle
MPLS vs IP Routing : Know the difference - IP With Ease
Chapter 5 MPLS Labels There are many examples of label substitution protocols already in existence. ATM - label is called VPI/VCI and travels with cell. - ppt download
What is Label Edge Router (LER)? - Definition from Techopedia