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Which OSI layer is LDP (Mpls) and which plane does it work on?

Network Engineering Engineering Data Network VoIP IT Infrastructure
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Question added by Rifthy Jameel , SR Network and Security Engineer , Tata Consultancy Services
Date Posted: 2015/07/13
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Rana Muhammad Sohaib
by Rana Muhammad Sohaib , IT Project Manager , Xoh Technologies Pvt. Ltd.

MPLS protocol data units operate at Layer2, however LDP which is the control-plane part of MPLS operates at Layer3 &4 (UDP port646). 

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