ON-LINE CONFIGURATION
OPERATION
B - 6
WBPEEUI230019A0
®
n+1
00xx0x0x
n
00xx1x0x
4. Resetting the primary MFP module (n+1), currently acting as the hot backup,
directs it to get a copy of the new configuration (Step 9 of the backup cycle).
n+1
10xx0x0x
n
00xx0x0x
5. When the new configuration has been copied, the backup MFP module has
completed its cycle, and is now serving as the primary MFP module.
n+1
10xx0x0x
n
00xx0x0x
6. After the checkpoint data is complete, the primary MFP module is now serving
as the backup MFP module and is ready to take over the control process with
the updated configuration. The primary cycle is complete. (This represents the
same juncture as Step 10 of the backup cycle.)
Table B-3. Primary Cycle
(continued)
Primary
Backup
Procedure
Figure B-2. Primary MFP Module Operating Cycle
S H U T D O W N
R E QU E ST ED
C O PY T H E
P R IM ARY ’S
C O N FIG U R ATIO N
T 01 9 62 A
S H U T D O W N
C O M P LE TE
R E SE T
C H E C K PO IN T DATA
IS C O M P LET E
3
H O T
B AC K U P
E X T
2
P R IM A RY
E X T
1
P R IM A RY
E X T
5
B AC K U P
E X T
6
B AC K U P
E X T
4
B AC K U P
E X T
BU SC L K
BU SC L K
S TE P
R OL E
M O D E
LE G E N D :
E XT = E X EC U T E M O D E
BU SC L K = LO SS O F BU S C LO C K
