Upgrading to S78000 and S88000 PMF CRUs

Upgrading to S78000 and S88000 PMF CRUs
See Change History for a list of changes made to this topic.
Use this procedure to upgrade both PMF CRUs in an enclosure to S78000 or S88000.
S7400, S7600, and S7800 PMF CRUs can be upgraded online, but S7000 PMF CRUs
must be upgraded offline. See PMF CRUs That Can Be Upgraded Online and Coexist
Permanently in Mixed Systems.
Notes:
Do not attempt to upgrade to unsupported configurations.
IOMF and IOMF 2 CRUs are supported. IOMF 2 is needed for ServerNet II.
IOMF and IOMF 2 CRUs can coexist briefly in an enclosure for online upgrade.
For performance reasons, both IOMF CRUs in an enclosure must be IOMF or
IOMF 2 CRUs.
When the first S72000 PMF CRU in an enclosure is replaced with an S76000 or
later, or when an S7400 PMF CRU is replaced with an S7600 or later, an OSM or
TSM ServerNet path down alarm is generated. This normal condition is created
by router chip protocol differences. Ignore these alarms and messages. Replace
the other PMF CRU. When both PMF CRUs in an enclosure have been replaced,
the system returns to normal, and the alarms disappear.
Caution: Ask your service provider to verify the daughter board connectors on the
PMF CRU are fully seated before installing the CRU. Instructions are in Technical
Bulletin TB20051B. This affects S7800, S76000, S86000, S78000, and S88000.
Preparing for the Upgrade
1 If you are upgrading an S7000 system, a power shelf and two power
supplies must be installed in each processor enclosure by a trained service
provider. Contact your service provider for more details.

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