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Cisco ONS 15454 Procedure Guide, R5.0
March 2007
Chapter 18 DLPs A100 to A199
DLP-A177 Convert DS3-12 Cards From 1:1 to 1:N Protection
b. Next to Switch Commands, click Switch.
The working slot should change to Working/Active and the protect slot should change to
Protect/Standby. If they fail to change, do not continue. Troubleshoot the working card and slot to
determine why the card cannot carry working traffic.
Step 4 Repeat Steps 2 and 3 for each protection group that you need to convert.
Step 5 Click the Alarms tab to verify that no standing alarms exist for any of the DS3-12 cards you are
converting. If alarms exist and you have difficulty clearing them, contact your next level of support.
Step 6 Click the Provisioning > Protection tabs.
Step 7 Click the 1:1 protection group that contains the cards that you will move into the new protection group.
Step 8 Click Delete.
Step 9 When the confirmation dialog box appears, click Ye s.
Note Deleting the 1:1 protection groups will not disrupt service. However, no protection bandwidth
exists for the working circuits until the 1:N protection procedure is completed. Therefore,
complete this procedure as soon as possible.
Step 10 If you are deleting more than one DS-3 1:1 protection group, repeat Steps 7 through 9 for each group
that you want to include in a 1:N group.
Step 11 Physically remove the protect DS3-12 card from Slot 3 or Slot 15. This raises an improper removal
alarm.
Step 12 In node view, right-click the slot that held the removed card and choose Delete from the shortcut menu.
Wait for the card to disappear from the node view.
Step 13 Physically insert a DS3N-12 card into the same slot.
Step 14 Verify that the card boots up properly.
Step 15 Click the Inventory tab and verify that the new card appears as a DS3N-12 card.
Step 16 Click the Provisioning > Protection tabs.
Step 17 Click Create.
Step 18 Type a name for the protection group in the Name field (optional).
Step 19 Click Type and choose 1:N (card) from the drop-down list.
Step 20 Verify that the DS3N-12 card appears in the Protect Card field.
Step 21 In the Available Cards list, highlight the cards that you want in the protection group. Click the arrow
(>>) button to move the cards to the Working Cards list.
Step 22 Click OK.
The protection group should appear in the Protection Groups list on the Protection subtab.
Step 23 Return to your originating procedure (NTP).
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