Cisco Cisco ONS 15454 SDH Multiservice Provisioning Platform (MSPP) 安装指南

Ensure that the working (active) span is carrying error-free traffic without FAIL alarms or SF alarms.

Perform a lockout on the protection span  in the CTC software before initiating an STM-N card reset. In 
an MSSPRing, place a lockout on the East and West node cards adjacent to the XC10-G switch node. 
For example, if you are switching the XC10-G on Node B, place a lockout on the Node A West card and 
on the Node C East card. You do not need to place lockouts on Node B. Before settingthe lockout, verify 
that the MSSPRing is not switched. Traffic can be lost if the MSSPRing is switched when the lockout is 
set.

<------East [Node A] West------East [Node B] West------East [Node C] West------>

In a 1+1 protection scheme, place a lockout on the protect card and verify that traffic is traveling 
over the working span before setting the lockout.

Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution 
when servicing. 

In the CTC software, determine which STM-N card is active.

You can determine whether the card is in active mode or standby mode by viewing it in the CTC software 
and positioning the cursor over the card graphic to display the status.

Switch the active STM-N card to standby:

In the node view, select the Maintenance > STM Cards tabs.

From the Cross Connect Cards menu, choose Switch.

Click Yes on the Confirm Switch dialog box.

After the working STM-N card goes into protection, the protection slot becomes working. This causes 
the former working card ACT LED to switch off.

Pull the protection STM-N card from the ONS 15454 SDH.

Insert the replacement STM-N card into the empty slot. The replacement card boots up and becomes 
ready for service after approximately one minute. After this procedure the card is ready  for protection 
function.

DOC-7813038= Cisco ONS 15454 SDH Installation and Operations Guide

DOC-7813037= Cisco ONS 15454 SDH Troubleshooting and Reference Guide