Control Unit Port (Cup) - HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual

Control Unit Port (CUP)

Control Unit Port (CUP) protocol is used by IBM mainframe management programs to provide in-band
management for FICON switches. When it is enabled, you can set up Directors in a FICON environment to
be managed through IBM mainframe management programs. CUP is an optionally licensed feature
available with Fabric OS v4.4.0 or later.
CUP functionality is present on the SAN Switch 2/32 and SAN Director 2/128 models running Fabric OS
v4.4.0 or later. CUP functionality is also present on the SAN Switch 4/32, SAN Switch 4/32B and 4/256
SAN Director models running Fabric OS v5.0.1b or later.
For Fabric OS 5.2.x and higher, the following restrictions apply to the 4/256 SAN Director when FICON
Management Server mode (fmsmode) is enabled and CUP protocol is used to manage the switch:
• The switch is advertised to the mainframe via CUP as a 256-port switch (due to CUP protocol
limitation).
• Port Information Block, PDCM, and port names are available for ports 0 through 254 only.
• CUP is not supported on the FC4-48 port blade Even though the FC4-48 port blade can be inserted in
the chassis, only FCP ports can be attached to it.
• The FC4-48 port blade must not be inserted in slot 10 of the chassis. Slot 10 is reserved for the CUP
port.
• For FR4- 1 8i and FC4- 1 6IP port blades, FICON channels and control units (CUs) can be attached only to
the FC ports on these blades. These blades are advertised to the mainframe as 16-port and 8-port
blades respectively.
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