To CUP or Not to CUP? That is still the (FICON) question!

Project and Program: MVS, MVS Core Technologies

Tags: Proceedings, 2016, SHARE in San Antonio 2016

The FICON Control Unit Port (CUP) provides an in-band management interface defined by IBM that defines the channel command words (CCWs) that the FICON host can use for managing the switch. The protocol used is the IBM version of the ANSI FC-SB4 single-byte command code specification; which defines the protocol used for transporting CCWs to the switch; and for the switch to direct data and status back. FICON CUP is an optional licensed feature for FICON switching devices such as the IBM SAN768B-2.  Several new advanced diagnostic features have been added to FICON CUP over the past two years.  This presentation; based on the speaker's October 2015 article in Enterprise Tech Journal will review some basic FICON CUP functionality; and then introduce those new diagnostic features.-Stephen R. Guendert-Brocade Communications Systems

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