Avaya 03-300430 User Manual

Note:

PNC duplication requires IPSI duplication.

To enable PNC duplication:

1. Enable PNC-DUP on the change system-parameters customer-options screen.
2. Fully administer duplicate fiber link connectivity. Verify by issuing list fiber-link. For 

IP Duplication go to Step 

3. Fully administer IPSI duplication (ipserver-interface duplication). Verify by using 

list ipserver-interface.

4. Turn on PNC-DUP using 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. For CSS configurations this takes up to 5 minutes depending upon CSS circuit pack 
insertion. For Direct Connect configurations this is declared complete at 5 minutes after the 
first appearance of the terminal login prompt.

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 perform the following sequence of steps:

1. Verify that the A-PNC is active. A forced interchange may be required. See reset pnc in 

Chapter 8.

2. Busyout the standby PNC (B-PNC).

3. Turn off the system parameter for PNC-DUP using change system-parameters 

duplication.
After PNC duplication has been removed, configuration audits generate the alarm shown 
below and possibly others. To clear this alarm, the B-PNC fibers, circuit packs in switch 
node carriers (EIs, SNIs, SNCs, and DS1Cs), and switch node carriers must be removed as 
outlined in the following steps.

01D   SN_CONF     5000  255 
In this case, 01D is the B-PNC switch node from which duplication was removed.