Nortel MER-1002-003 Manual page 24

Documentation Release Note
Nortel Networks
4 Verify that all cables are labeled and in place. Failure to pre-route
cables will result in increased downtime and possible system failure.
See "Pre-route the FIJI cables" on page 9 if the cables are not already
routed.
5 Break Ring 0 by removing the cable from the current highest Network
Group P1 to Group P2. The Rings will switch to SURVIVAL STATE
once the Ring is broken.
6 Attach the new Ring 0 cables in the correct configuration.
7 Make Clock 0 active.
LD 60
SSCK 0
SWCK
****
8 Break Ring 1 by removing the cable from Group 0 P1 to the current
highest Network Group P2.
9 Attach the new Shelf 1 Fiber Ring cables in the correct configuration.
10 Verify that the Rings are in Survival State and FIJI cards are enabled.
LD 39
STAT RING 0
STAT RING 1
Note: The readout will specify the state of the Rings and which FIJI
cards are enabled or disabled.
11 Reset the Rings.
LD 39
RSET
RSTR
12 Check that the Rings operate correctly.
LD 39
STAT RING 0
STAT RING 1
to load the program
to check if Clock 1 is active or standby
to switch to clock 0
to exit the program
to load the program
to check the status of Ring 0
to check the status of Ring 1
to load the program
to reset the Rings
to restore the Rings
to load the program
to check the status of Ring 0
to check the status of Ring 1
11/4/02
Number: MER-1002-003
24 of 26
TM