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Optical Network Control: Architecture, Protocols, and Standards by Debanjan Saha, Bala Rajagopalan, Greg Bernstein

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6.4. LMP

LMP is a protocol being standardized by the IETF. Its functionality includes:

  • Link connectivity verification: Supports the discovery of topological links between adjacent OXCs or PXCs.

  • Link parameter correlation: Supports the exchange of link parameters between adjacent NEs.

  • Control channel management: Allows the health of the control channel(s) between two adjacent NEs to be monitored.

  • Link fault localization: Allows the localization of faults occurring in topological links between PXCs.

LMP has been designed to accommodate OOO switches (PXCs) with their limitations on in-band communication capabilities (i.e., overhead bytes cannot be used for communication). Thus, LMP functions are somewhat more complex than what is required for just ...

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