18-65
Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 18 DLPs D100 to D199
DLP- D177 Convert DS3i-N-12 Cards From 1:1 to 1:N Protection
DLP-D177 Convert DS3i-N-12 Cards From 1:1 to 1:N Protection
Note This procedure assumes that DS3i-N-12 cards are installed in Slots 1 to 6 and/or Slots 12 to 17. The
DS3i-N-12 cards in Slots 3 and 15 are the protect cards. Each protect card protects the other DS3i-N-12
cards in that half of the shelf. The ONS 15454 SDH must run CTC Software R4.0 or later.
Step 1 In node view, click the Maintenance > Protection tabs.
Step 2 Click the protection group that contains Slot 3 or Slot 15 (where you will install the DS3i-N-12 card).
Step 3 Make sure the slot you are upgrading is not carrying working traffic. In the Selected Group list, the
protect slot must say Protect/Standby and not Working/Active. If the protect slot status is
Working/Active, use the following steps to switch traffic to the working card:
a. Under Selected Group, click the protect card.
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 Verify that no standing alarms exist for any of the DS3i-N-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 Yes .
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 protection group, repeat Steps 7 through 9 for each group.
Step 11 Physically insert a DS3i-N-12 card into the same slot.
Step 12 Verify that the card boots up properly.
Step 13 Click the Inventory tab and verify that the new card appears as a DS3i-N-12 card.
Step 14 Click the Provisioning > Protection tabs.
Purpose This task converts DS3i-N-12 cards from 1:1 protection to 1:N protection.
A 1:N protection group can protect a maximum of five working cards.
Tools/Equipment None
Prerequisite Procedures DLP-D60 Log into CTC, page 17-49
Required/As Needed As needed
Onsite/Remote Onsite
Security Level Provisioning or higher
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