�1����
Scope�
�2����
References
�3����
Definitions����
�4����
Abbreviations�
�5����
Discovery methodology
�6����
Mechanisms for Layer Adjacency Discovery��
�7����
Attributes used in layer adjacency������
�8����
Layer adjacency based on trail trace string������
������� 8.1���� Discovery Message formats������
�9����
Layer adjacency based on embedded control channel messages
������� 9.1���� LAPD-based mechanism�
������� 9.2���� PPP-based mechanism����
10���� Procedures����
11���� Discovery response message���
������ 11.1��� �Miswiring detection������
������ 11.2���� Misconnection detection
Appendix I �
Implementation example of discovery process����
������� I.1���� � Layer Adjacency
Discovery information flow�
Appendix II �
Miswiring detection����
������ II.1���� Auto discovery procedures�������
������ II.2���� Example: Interaction between two DAs using different Discovery
Message formats���
Appendix III �
Example of Discovery Response Message using generalized MPLS-based
mechanism����
Appendix IV � Layer
Adjacency Discovery implementation examples����
Appendix V � In-band
message encoding example����