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ATM PNC-DUP (ATM PNC Duplication)
Issue 1 June 2005 589
Enabling and Removing PNC Duplication
To Enable PNC Duplication
To enable PNC duplication, perform the following sequence of steps:
1. Enable administration of PNC-DUP on the change system-parameters
customer-options screen.
2. Fully administer duplicate ATM PNC connectivity. Verify by list atm pnc. Or for IP
duplication, go to step three.
3. Fully administer IPSI duplication (ipserver-interface duplication). Verify by using
list ipserver-interface.
4. Activate PNC-DUP through the change system-parameters duplication screen.
This is not allowed if any component of either PNC (A or B) is busied out.
5. The system must insert all connectivity-related components for both standby and active
PNC, a process that takes up to 5 minutes, depending upon circuit pack insertion. The
process finishes when the first terminal login prompt appears.
6. The PNC-DUP initialization anti-thrashing timer must expire (this occurs 5 minutes after
completion of board insertion, PNC interchange, or system reset of level 2 or higher).
To Disable PNC Duplication
To disable PNC duplication perform the following sequence of steps:
1. Verify that the A-PNC is active. A forced interchange may be required. See reset pnc.
2. Busyout the standby PNC (B-PNC).
3. Turn off the system parameter for PNC-DUP through change system-parameters
duplication.
4. Remove the B-PNC connectivity by removing the Board Locations on the change fiber
screen for ATM PNC.
5. Remove the B-PNC circuit packs (ATM-EI boards). Use change circuit-pack
location.
6. Disable administration of PNC duplication on the change system-parameters
customer-options screen by changing the PNC Duplication field to n.
Notes:
● Alterations to PNC that involve only the addition of connectivity can be done with
PNC-DUP operational.
● Alterations requiring the removal of connectivity must be done with PNC-DUP removed.
● PNC-DUP must be removed and translations should be saved before making any
hardware changes.