Примечания к выпуску для Cisco Cisco ONS 15454 SDH Multiservice Provisioning Platform (MSPP)

SDH DS3-I and E3 electrical cards only support a VC4 J1 trace string setting for all VC4s together. You 
cannot set the J1 byte for individual VC4s. This issue is a limitation of hardware. 

VC3 J1 strings can be set individually, but the optical cards cannot monitor the VC3 J1 string.

Interconnection Equipment failure alarms may be generated at 55 degrees C, and 72 volts. When the 
operating environment is at 55 degrees C and 72 volts, interconnection equipment failure alarms for the 
following cards can occur: 

STM16SH

STM64LH

STM16LH

The alarms could potentially occur on any of these boards, as well: OC48AS, GigE, OC192 or 
OC192LR. This issue will not be resolved.

Before you upgrade to Release 7.x from Release 4.0, 4.0.1, or 4.1, you must read this caveat and run the 
SDH Circuit Repair Utility (VcCheck) provided on the software CD (also available on CCO).

The XCVXL card on the ONS 15454 SDH allows the intermixing of VC12 and VC3 payloads within a 
single VC4. When a VC4 contains only one VC12 tributary and at least one VC3 tributary and the VC12 
is deleted, the database becomes corrupt. 

The database load process on the ONS 15454 SDH occurs during a TCC2/TCC2P reboot, TCC2/TCC2P 
protection switch, software activation, or database restore. When the database is loaded containing this 
corruption the load process fails, causing the corrupt database to be deleted from the TCC2/TCC2P flash 
memory. The previous saved database is then loaded instead. When all saved databases on a 
TCC2/TCC2P contain the corruption, the TCC2/TCC2P will load with the default provisioning, and all 
existing provisioning will be lost. 

If this issue occurs you will see a loss of either some or all provisioning after a TCC2/TCC2P switch or 
reset. 

To ensure that your network is not vulnerable to this issue, you must first determine if the issue already 
exists within your network, and if so, correct it. You can detect the issue by using the SDH Circuit Repair 
Utility (VcCheck) provided on the ONS 15454 SDH Release 4.1.3, 4.6.x, 5.x, 6.x, or 7.x software CDs. 
The VcCheck tool is also available for download from CCO. Once you have alleviated immediate risk 
from the issue, you must upgrade to Release 7.x, Release 6.x, Release 5.x, Release 4.6.1, or maintenance 
Release 4.1.3 (or any later release) to avoid further risk.