Converting some or all CSS port networks to IP-PNC
1100 Upgrading, Migrating, and Converting Media Servers and Gateways
Refreshing the switch-node clock memory, if necessary
Perform this procedure only if some PNs in the CSS remain fiber-connected and alarms were
generated for the removed SNI (TN573) circuit packs.
If you are converting all the PNs in a CSS to IP-PNC or if no alarms are present for the removed
SNI circuit packs, continue with Post-conversion tasks
on page 1103.
If you do not convert all PNs in a CSS to IP-PNC, the switch-node clock might retain memory of
the switch-node interface circuit packs. In this case, a major alarm SNI-PEER is generated.
Adding and removing the TN573
To clear the SN clock memory and prevent the alarms, use the change circuit-packs
command to add, and then remove, the TN573 circuit pack.
To add the TN573:
1. At the SAT, enter change circuit-pack n, where n is the cabinet number of the
removed SNI circuit pack.
2. On the Circuit Packs screen, go to the carrier and the slot of the removed SNI circuit pack
and enter TN573.
3. Press Submit.
To remove the TN573 that you just added:
1. Enter change circuit-pack n
2. On the Circuit Packs screen, go to the carrier and the slot of the TN573 that you just added
and type blanks in the field.
3. Press Submit.
Reseating the switch-node clock if alarms persist
Perform this task only if the SNI-PEER alarms continue after you complete the previous task,
Adding and removing the TN573
on page 1100.
If the alarms were cleared and have not returned, continue with Administering PN
synchronization, if necessary on page 1101.
If some PNs in the CSS remain fiber-connected, perform one of the following actions:
Tip:
Tip: To view the switch-node status, enter status switch-node.
● If the configuration includes one CSS with one SN clock:
1. Enter busyout board UUCSS, where UUCSS is the location of the switch-node clock.
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