Chapter Six. Neighbor Discovery

6.1 INTRODUCTION

6.2 TYPES OF ADJACENCIES AND DISCOVERY PROCEDURES

6.2.1 Layer Adjacency

6.2.2 Physical Media Adjacency

6.2.3 Control Adjacency

6.2.4 Neighbor Discovery Procedures

6.3 PROTOCOL MECHANISMS

6.3.1 Neighbor Discovery Using the J0 Byte

6.3.1.1 J0-Based Discovery with an Out-of-Band Control Channel

6.3.1.2 J0-Based Discovery without an Out-of-Band Control Channel

6.3.1.3 An Alternative Usage of J0 Bytes

6.3.1.4 Multilayer Neighbor Discovery

6.3.2 Neighbor Discovery Using the DCC Bytes

6.3.3 Link Property Correlation

6.4 LMP

6.4.1 Control Channels

6.4.1.1 In-Fiber Control Channels over SONET/SDH DCC Bytes

6.4.1.2 Out-of-Fiber Control Channels

6.4.2 LMP Usage with OEO Cross-Connects (OXCs)

6.4.2.1 Basic LMP Parameters

6.4.2.2 Link Connectivity Verification

6.4.2.3 Link Property Correlation with a Distributed Control Plane

6.4.3 LMP Usage with Photonic Cross-Connects (PXCs)

6.4.3.1 Link Connectivity Verification

6.4.3.2 Procedure

6.4.3.3 Complexity of Complete Link Identification

6.4.3.4 Link Property Correlation

6.5 SUMMARY