LCP

from The Free On-line Dictionary of Computing (8 July 2008)

Link Control Protocol
LCP

   <protocol> A {protocol} used to automatically agree upon
   {encapsulation} format options, handle varying packet size
   limits, authenticate the identity of its {peer} on the link,
   determine when a link is functioning properly and when it is
   defunct, detect a looped-back link and other common
   misconfiguration errors, and terminate the link.

   [RFC 1570].

   (1997-05-10)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

LCP
       [PPP] Link Control Protocol (PPP, RFC 1570)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

LCP
       [Sair] Linux [and GNU] Certified Professional (Linux, GNU, Unix)