Cp Upgrade - Nortel Passport 15000 Hardware Installation And Maintenance

96 Chapter 6 Control processors

CP upgrade

Prerequisites to CP upgrade
241-1501-240 5.2S2
Upgrade the CPs in your switch to increase functionality. Upgrading means
replacing a CP that is already installed with one of a higher PEC version.
• "Prerequisites to CP upgrade" (page 96)
• "CP upgrade task flow" (page 97)
CAUTION
Risk of service loss from inappropriate firmware
On Passport 15000 a CP3 card supports only release 1.3
software or later. Upgrade the software, if necessary,
before inserting a CP3. If the CP3 card is loaded with
firmware from pre-1.3 software, it will crash. In this
particular situation, a crashed CP3 cannot be recovered on
site because its flash memory for firmware must be
reprogrammed at Nortel Networks.
CAUTION
Risk of service loss from shelf reset
If you attempt to switch the activity of the CPs while the
backup is not available (in-service and connected), the
Passport 15000 or 20000 switch undergoes a reset to try
resolving not being able to find the backup.
• A Passport 20000 only supports CP3s with PEC NTHW06 or NTHW08.
• Ensure that the appropriate level of software is installed. To verify the
minimum software requirements of the CPs, see 241-1501-200 Passport
15000, 20000 Hardware Description.
• When upgrading an unspared CP, the entire node will be out of service
while the CP is replaced and the replacement is configured in software.
• Ensure the file system is synchronized