1 02/21/85 stop_mpx
 2 
 3 Syntax as a command:  stop_mpx name
 4 
 5 
 6 Function:  causes the specified multiplexer to be made inactive.  This
 7 makes the multiplexer stop listening for further calls on its dialup
 8 channels if it is up and running; it inhibits listening to the channels
 9 after a bootload, if one is in progress; it prevents automatic
10 reloading of the multiplexer if it crashes (or is crashed by the
11 dump_mpx command); and if issued before startup, it prevents the
12 loading of the multiplexer during startup.  Users currently logged in
13 over the multiplexer channels are not affected.  This command can be
14 used in ring 4 only.
15 
16 
17 Arguments:
18 name
19    specifies the multiplexer that is to be made inactive.
20 
21 
22 Notes:  To bump all users logged in over channels of this multiplexer
23 (see the bump command for more information), type:
24 
25    !  stop_mpx name
26    !  bump mpx name {mm} {message}
27 
28 This sequence of the two commands stop_mpx and bump mpx is the
29 recommended method of taking a multiplexer out of service while Multics
30 remains up.
31 
32 Hardwired channels normally appear to be dialed up at all times; such
33 channels are not affected by the stop_mpx command.
34 
35 
36 The effect of the stop_mpx command can be reversed by issuing the
37 start_mpx command, provided that the multiplexer remains running during
38 the time it is out of service.  If it does not remain running, the
39 load_mpx command must be used to return it to service.