ON-LINE CONFIGURATION
OPERATION
WBPEEUI230019A0
B
-
5
This information is provided for status purposes. Follow the
backup cycle procedures to perform on-line configuration.
Figure B-1. Backup MFP Module Operating Cycle
C H E C K P O IN T D ATA
IS C O M P L E T E
5
B AC K U P
E X T
4
B AC K U P
E X T
2
B AC K U P
C F G
1
B AC K U P
E X T
3
B AC K U P
E R R
1 0
P R IM A RY
E X T
9
P R IM A RY
E X T
8
B AC K U P
E X T
7
B AC K U P
E X T
6
B AC K U P
E X T
T 01 70 0 A
L E G E N D :
E X T = E X E C U T E M O D E
C F G = C O N F IG U R AT IO N M O D E
E R R = E R R O R M O D E
B U S C L K = L O S S O F B U S C L O C K
S T E P
R O L E
M O D E
C H E C K P O IN T
D ATA IS
C O M P L E T E
R E S E T
(C H A N G E S M A D E )
R E Q U E S T
S H U T D O W N O F
P R IM A R Y
B U S C L K
B U S C L K
B U S C L K
B U S C L K
R E S E T ( C O N F IG U R AT IO N N O T C O P IE D )
C O N F IG U R AT IO N
IS C O P IE D TO
T H E B A C K U P
R E S E T
(N O C H A N G E )
E X T
E X T
C F G
C F G
C F G
IN IT IA L IZ E
E E R O M
Table B-3. Primary Cycle
Primary
Backup
Procedure
n
01xx0x0x
n+1
10xx1x0x
1. The primary MFP module is actively controlling the process. (This represents
the same juncture as Step 5 of the backup cycle.)
n+1
01xx0x0x
n
11xx1x0x
2. When the shutdown request is received from the backup MFP module (Step 8
of the backup cycle), the primary MFP module stops executing and removes the
bus clock (BUSCLK).
n+1
01xx0x0x
n
01xx1x0x
3. The primary MFP module is now acting as the hot backup (n+1). All old con-
figuration and block output information remains intact from when it is shut down
in Step 2. If the new configuration is not operating as expected, the primary MFP
module, currently acting as the hot backup (n+1), can take control using the old
configuration and block output information (returns to Step 1).
