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Cisco ONS 15327 Troubleshooting Guide, R3.4
March 2004
Chapter2 Alarm Troubleshooting
Alarm Procedures
2.6.129 MEM-LOW
•Minor (MN), Non-Service Affecting (NSA)
The Free Memory of Card Almost Gone (MEM-LOW) alar m occu rs wh en d ata gene ra te d by so ft ware
operations is close to exceeding the memory capacity of the XTC card. The alarm clears wh en additional
memory becomes available. If additional memory is not made available and the me mor y cap aci ty of the
XTC card is exceeded, CTC ceases to function.
The alarm does not require user intervention. If the alarm does not clear, log onto
http://www.cisco.com/tac for more information or call TAC (1-800-553-2447).
2.6.130 MFGMEM
•Critical (CR), Service Affecting (SA)
The Manufacturing Data Memory Failure (MFGMEM) alarm oc curs if the ONS15327 cannot access the
data in the electronically erasable programmable read-only memory (EEPROM). Either the memory
module on the component failed or the XTC lost the ability to read that module. The EEPROM stores
manufacturing data that is needed for both compatibility and inventory issues. An inability to read a v alid
MAC address disrupts IP connectivity and grays out the ONS 15327 icon on the CTC network view.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15327.
Plug the wristband cable into the ESD jack located between the top high-speed and XTC slots.

Procedure: Clear the MFGMEM (BP, Fan-Tray Assembly) Alarm

Step 1 Complete the “Reset the Active XTC Card in CTC” procedure on page2-129.
Verify that the active card you reset is now standby. The ACT/STBY LED of this card should be am ber,
and the newly active XTC card LED should be green.
Step 2 If the reset card has not rebooted successfully, or the alarm has not cleared, c all TAC (1-800-553-2447).
If the TAC technician tells you to reseat the card, complete the “Remove and Reinsert (Reseat) the
Standby XTC” procedure on page 3-3. If the TA C te ch nician te lls y ou to remove the card and reinstall a
new one, follow the “Physically Replace a Card” procedure on page 2-130.
Step 3 If the MFGMEM alarm continues to report after replacing the XTC cards, the problem is with the
EEPROM.
Step 4 If the MFGMEM is reported from the fan-tray assembly, obtain a fan-tray assembly and complete the
“Replace the Fan-Tray Assembly” procedure on page 3-1.
Step 5 If the alarm does not clear, log onto http://www.cisco.com/tac for more information or call TAC to report
a service-affecting problem (1-800-553-2447).