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Cisco ONS 15454 Procedure Guide, R5.0
March 2007
Chapter 18 DLPs A100 to A199
DLP-A178 Convert DS3-12E Cards From 1:1 to 1:N Protection
DLP-A178 Convert DS3-12E Cards From 1:1 to 1:N Protection
Note This task assumes that DS3-12E cards are installed in Slots 1 to 6 and/or Slots 12 to 17. The DS3-12E
cards in Slots 3 or 15, which are the protection slots, will be replaced with DS3N-12E cards.
Step 1 In node view, click the Maintenance > Protection tab.
Step 2 Click the protection group containing Slot 3 or Slot 15 (where you will install the DS3N-12E 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 as shown Figure 18-5 on page 18-56, and not Protect/Active. If the
protect slot status is Protect/Active, 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 Click the Alarms tab to verify that no standing alarms exist for any of the DS3-12E 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 tab.
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. Do not delay
when completing this procedure.
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 DS3-12E 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-12E card into the same slot.
Purpose This task converts DS3-12E cards in 1:1 protection to 1:N protection. A
1:N protection group can protect a maximum of five working cards.
Tools/Equipment At least one DS3N-12E card and a protection group with DS3N-12E cards.
Prerequisite Procedures DLP-A60 Log into CTC, page 17-66
Required/As Needed As needed
Onsite/Remote Onsite
Security Level Provisioning or higher
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