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Cisco ONS 15454 SDH Procedure Guide, R7.2
October 2007
Chapter 19 DLPs D200 to D299
DLP- D296 Perform a Manual Span Upgrade on a 1+1 Protection Group
Step 10 Complete the “DLP-D198 Clear an SNCP Force Switch” task on page 18-85 when cards in both endpoint
nodes have been successfully upgraded and all the facility alarms (LOS, SD, or SF) are cleared.
Step 11 Return to your originating procedure (NTP).
DLP-D296 Perform a Manual Span Upgrade on a 1+1 Protection Group
Warning
Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard.
Statement 206
Step 1 Initiate a Force switch on the ports you will upgrade, beginning with the protect port:
Note If the switching mode is bidirectional in the 1+1 protection group, apply the Force command to
only one end of the span. If the Force command is applied to both ends when the switching mode
is bidirectional, it will cause a switch of more than 50 ms in duration.
a. In node view, click the Maintenance > Protection tabs.
b. Choose the protection group from the Protection Groups area. In the Selected Group area, the
working and protect spans appear.
c. In the Selected Group area, click the protect STM-N port.
d. In Switch Commands, choose Force.
e. Click Yes in the confirmation dialog box.
FORCE-SWITCH-TO-WORKING appears next to the forced span.
Step 2 Repeat Step 1 for each port you will upgrade.
Step 3 Remove the fiber from both ends of the span and ensure that traffic is still running.
Step 4 Remove the STM-N cards from both span endpoints.
Step 5 At both ends of the span, in node view, right-click the STM-N slot and choose Change Card.
Step 6 In the Change Card dialog box, choose the new STM-N card type.
Step 7 Click OK.
Step 8 Complete the “NTP-D16 Install STM-N Cards and Connectors” procedure on page 2-7 to install the new
STM-N cards in both endpoints.
Purpose This task upgrades a 1+1 protection group span. To downgrade an
optical span, repeat this task but choose a lower-rate card in Step 6.
Tools/Equipment Higher-rate cards
Compatible hardware necessary for the upgrade
Prerequisite Procedures DLP-D60 Log into CTC, page 17-49
Required/As Needed As needed
Onsite/Remote Onsite
Security Level Provisioning or higher