Cisco Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP) Guía De Diseño

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The Span Upgrade Wizard automates all steps in the manual span upgrade procedure (BLSR, 
Path Protection Configuration, and 1+1).  The wizard can upgrade both lines on one side of a 
four-fiber BLSR or both lines of a 1+1 group; the wizard upgrades Path Protection Configurations 
and two-fiber BLSRs one line at a time.  The Span Upgrade Wizard requires that spans have 
DCC enabled.  For an explanation on how to use the Span Upgrade Wizard, refer to the Cisco 
ONS 15454 Procedures Guide

. 

 
The Span Upgrade Wizard provides no way to back out of an upgrade.  In the case of an 
abnormal error, you must exit the wizard and initiate the manual procedure to either continue with 
the upgrade or back out of it.  To continue with the manual procedure, examine the standing 
conditions and alarms to identify the stage in which the wizard failure occurred. 
 

 
Manual Span Upgrades are mainly provided as error recovery for the Span Upgrade Wizard, but 
they can be used to perform span upgrades.  Downgrading can be performed to back out of a 
span upgrade.  The procedure for downgrading is the same as upgrading except that you choose 
a lower-rate card type.  You cannot downgrade if circuits exist on the STSs that will be removed 
(the higher STSs). 
 
The following manual span upgrade options are available the Cisco ONS 15454 Procedures 
Guide

: 

 

1.  Perform a Manual Span Upgrade on a 2-Fiber BLSR 
2.  Perform a Manual Span Upgrade on a 4-Fiber BLSR 
3.  Perform a Manual Span Upgrade on a Path Protection Configuration 
4.  Perform a Manual Span Upgrade on a 1+1 Protection Group