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90 SunFDDI/P 1.0 Adapter User’s Guide—May1997
8
Table 8-1 lists the states that may be returned by pf_stat under the ECM
heading.
RMT (Ring Management)
RMT shows the current state of the Ring Management state machine, which
controls the following features and facilities:
• MAC availability
• Detection and resolution of duplicate addresses
• Identification of stuck beacon and initiation of trace
Table 8-2 lists the states that may be returned by pf_stat under the RMT
heading.
Table 8-1 pf_stat States Under the ECM Heading
State Meaning
OUT ECM is inactive and is waiting for a connect request (initial state).
IN ECM is active; normal state after successful connection request.
TRACE ECM is propagating a trace request to the appropriate entity.
LEAVE ECM is closing all connections prior to the station leaving the ring.
PATH_TEST ECM is entering a path test state following trace completion.
INSERT ECM is sending a request to the optical bypass switch to indicate that
the station is entering the ring. This disengages the switch.
CHECK ECM is verifying that symbols are being received from the network.
DEINSERT ECM is sending a request to the optical bypass switch, to indicate that
the station is leaving the ring. This engages the switch.
Table 8-2 pf_stat States Under the RMT Heading
State Meaning
ISOLATED RMT is inactive (initial state).
NON_OP RMT is waiting for an operational ring.
RING_OP RMT is operating normally.
DETECT RMT is checking for duplicate addresses (transient state during
initialization).