Usingthe SunFDDI Network Utilities 91
8
PCM(Physical Connection Management)
PCM shows the current state of the Physical Connection Management state
machine that controls the following features and facilities:
•Connection initialization
•Maintenance support
This heading is modified to indicate the type of port that is being managed:
•PCMS: single-attached station, S-port
•PCMA: dual-attached station, A-port
•PCMB: dual-attached station, B-port
Table8-3 lists the states that may be returned by pf_stat under the PCM
heading.
NON_OP_DUP RMT has detected that its address is duplicated and is initiating
recovery.The ring is not operational in this state.
RING_OP_DUP RMT has detected that the MAC addressis duplicated and flagged
the error.The ring is operational in this state.
DIRECTED RMT has been beaconing for an extended period of time and is
transmitting a stream of directedbeacons prior to initiating
recovery.
TRACE RMT has initiated a trace to recover a stuck beacon.
Table8-3 pf_stat States Under the PCM Heading
State Meaning
OFF PCM is inactive (initial state).
BREAK PCM is starting the connection synchronization phase.
CONNECT PCMis synchronizing the connection end-points prior to the signaling
sequence.
NEXT PCM is transmitting PDUs prior to entering SIGNAL state.
SIGNAL PCM is transmitting and receivingsignal bits (information) following
aNEXT state.
JOIN First state in the sequence leading to a synchronized connection.
Table8-2 pf_stat States Under the RMT Heading (Continued)