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 MPLS —Multi protocol label switching ? | by Vaishali Bhatt | Medium
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LER - "Label Edge Router" by AcronymsAndSlang.com
A Design of the IS-IS Routing Protocol for the ATM Based MPLS System | Semantic Scholar
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The path of the IP packet in the MPLS domain. | Download Scientific Diagram
What is Label Edge Router (LER)? - Definition from Techopedia