Appendix
C ATM OAM Functionality
Installation and Operation Manual
C-2
OAM Modes of Operation over ATM
ACE-3105, ACE-3205 Ver. 5.2
VP Intermediate Point
When a VP connection point (CP) is set as an intermediate point, it operates as
follows:
•
If the other side of the VP XC is also set as an intermediate point:
F4 segment, F5 segment and end-to-end OAM cells are forwarded
transparently to the other side of the XC.
Figure
C-1. VP Intermediate Point – Case A
When a failure is detected on the physical port, AIS state is declared and
F4 segment AIS and end-to-end AIS cells are generated towards the
forward direction.
Figure
C-2. VP Intermediate Point – Case B
•
If the other side of the VP XC is set as a segment point:
F4 end-to-end, F5 segment and F5 end-to-end OAM cells are forwarded
transparently to the other side of the XC. F4 segment OAM cells are
dropped from the cell stream, while F4 segment AIS, RDI and CC cells are
counted.
Figure
C-3. VP Intermediate Point – Case C
