Visara FEP-4600 Planning Guide - Manual (Page 11)

37x5 to FEP-4600 Migration and Planning Guide
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ESCON Host Attachments
Each ESCON Adapter interface supports a total of 256 subchannel addresses. Up to 16
CU definitions are supported through the interface, each corresponding to a CNTLUNIT
macro definition in the IOCDS gen. Each CU is dedicated to a single LPAR. Each CU is
also dedicated to a single channel protocol. Protocols supported through the channel
interface include PU 2 (FID 2) for support of remote PU2.0 controllers and PU 2.1 APPN
platforms, PU 4 (FID 4) for SCTC connections (links between VTAM and a remote
NCP) including SNI, Non-SNA 3270 for supporting remote BSC 3270 platforms (VTAM
and), and Non-SNA EP for supporting remote BSC 3270 and RJE platforms.
Two ESCON interfaces are supported on the FEP-4600. Each interface uses a standard
ESCON-Duplex connection. MTRJ to ESCON Duplex cables are required for
compatibility to some hosts.
In some instances it may be possible (and desirable) to consolidate multiple remote
connections into the same CNTLUNIT definition to conserve on the number of CU
definitions required on the FEP-4600. For example, you could define 4 remote PU 2.0
controllers and a PU 2.1 platform, using one CU for each PU that is defined (a total of 5),
or you could use a single CU to define all 4 remote PU 2.0 controllers and the PU 2.1
platform. The latter method leaves the other 15 CUs to define connections to other
LPARs, other protocols, and other hosts.
FICON Host Attachments
The FICON Interface Adapter comes in three varieties, single, dual, and quad interfaces.
Each FICON interface supports a total of 256 subchannel addresses. Up to 16 CU
definitions are supported through each interface, each corresponding to a CNTLUNIT
macro definition in the IOCDS gen. Each CU is dedicated to a single LPAR. Each CU is
also dedicated to a single channel protocol. Protocols supported through the channel
interface include PU 2 (FID 2) for support of remote PU2.0 controllers and PU 2.1 APPN
platforms, PU 4 (FID 4) for SCTC connections (links between VTAM and a remote
NCP) including SNI, Non-SNA 3270 for supporting remote BSC 3270 platforms (VTAM
and), and Non-SNA EP for supporting remote BSC 3270 and RJE platforms.
Four FICON interfaces are supported on the FEP-4600. Each interface uses a standard
LC connector, and both Long Wave FICON and Short Wave FICON are supported. The
correct transceiver to match a Long Wave or Short Wave interface must be ordered.