IBM 3745 Series Service Functions page 241

Concurrent Maintenance
SHT - Shutdown CA Before Repair
Before Issuing SHT - - - - - - - - - - - ,
All traffic must be stopped on the CA. There-
fore, the operator must perform a "VARY
INACT" for the channel resource from every
hostlVTAM that has this NCP active (an active
transmission group using this channel link
could exist).
SHT is a command that:
• Disconnects the CA,
• Removes the CA from ASC chain, and
• Removes the CA from CSGC chain.
The following statuses of the CA become:
LSTAT
ASC
CSGC
I nterface status
Disconnected
Out
Out
Disabled.
That CA is now in CACM mode.
RES - Restore CA After Repair
RES is a command that:
• Resets the CA (RST)
• Initializes the CA (INI)
• Inserts the CA in the ASC chain
• Inserts the CA in the CSGC chain
• Connects the CA.
The following statuses of the CA become:
I STAT
LSTAT
ASC
Init
Connected
In
CSGC In.
That CA is now available for normal use.
10-10
3745 Communication Controller
CI
C .. 2 ;S",,": I~:T
CCU A tS"A": :C''':EC"ED
IISS~~:IIID
CA
CA I 1ST AT: I'I!T
ASC : IN
C5GC: IN
A5C : IN
CC') II LSTA-: C~',';£CTED CSOC: IN
"SHUTDOWN" COfIIAND SELECTED
A: REC~£ST-D 5"ATvS; ::S,,3~ED
PS I~: 4
A: REOUEST,E ST"T:.5; E'II'8,ED
- £~S_'RE ThE HCST
MS
DEIICTIVA'D "LL T"E T~Aff:C O'.ER
T"I\T
CII
- TO STOP TRAFfIC. ~OTlFY H'E O"ER,,"C'l FOR THE CA TO BE SfRVICED.
THEN P~fSS SEND
Fl :END
F3:A.ARf·l F6:0UIT
Figure 10-19. Shutdown Command Screen
m
CA 2 ISTA': ... ASC : OUT
CCU A L5TAT: DISCONNECTED C5GC: OUT
ASSOCIATED CA
CA 1 ISTAT: INIT
CCU A LSTAT: CONNECTED
ASC : IN
CSGC: IN
"RESTORE" COfIIAND SELECTED
Fl :END
"3:ALARrl
A: REQUEST'D STATUS; DISABLED
PS 10: 4
A: REQUEST·E STATuS; ENABLEO
F5:QUIT
Figure 10-20. Restore Command Screen