March 27, 1998
In the following circumstance, there will be a reduction in memory size from 64M to 32M which can result in lost connections (and possibly other problems):
a BCC-4V is installed in a node as a standby controller, and
the node has a BCC-3-64 as the active processor, and
the node is running a version of switch software lower than 8.4.18, and
the node switches controllers for some reason
BCC-4V cards physically have 128 Mbytes of memory. Versions of switch software below 8.4.18, however, do not recognize the memory size of the BCC-4V and default to a memory size of 32 Mbytes. If a node is running below 8.4.18 switch software and has a BCC-3-64 as the active processor, it is using 64M of memory. If this node switches to a BCC-4V processor (during a processor upgrade, for example) it will experience a reduction in memory from 64M to 32M.
To avoid possible loss of connections and other problems when upgrading a node to BCC-4V processors, users should upgrade their switch software 8.4.18 or greater.
BCC-4V cards require revision H.H.M. boot code. Some BCC-4V cards may have been shipped without this version of boot code and may need to be upgraded before being placed into service.
For More Information
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