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smtmaint(1M)							  smtmaint(1M)

NAME
     smtmaint - set FDDI line state

SYNOPSIS
     /usr/etc/smtmaint interface phy-index pcm-ls
     /usr/etc/smtmaint interface phy-index -t

DESCRIPTION
     smtmaint is used to change the Physical Connection Management (PCM) line
     state (pcm-ls) for debugging purposes.  The interface is a symbolic name
     of the configured interface like ``ipg0''.	 The phy-index can be 0 for
     the first PHY (generally the B port on a dual attach station) or 1 for
     the second PHY (the A port, if it exists).	 The last argument can be
     either -t or the numeric or symbolic name of desired line state, pcm-ls.
     If -t is used, the PCM of the specified PHY enters the PC_TRACE state.
     If a pcm-ls value is used, the specified PHY's PCM holds its ouput line
     state as specified.  pcm-ls can be either symbolic name or numeric value:

     Name   Value   Description
     QLS      0	    Quiet
     ILS      1	    Idle
     MLS      2	    Master
     HLS      3	    Halt
     ALS      4	    Active

     smtmaint can be used as a PCM-level troubleshooting tool by changing the
     PCM line state.

     Only the superuser can invoke smtmaint.

CAVEAT
     Forcing a PCM line state change may break the entire ring.

DIAGNOSTICS
     If smtmaint fails for any reason, it prints an appropriate message on
     standard error and exits with non-zero status.

SEE ALSO
     smtd(1M), fddi(7).

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