z/VM: CP Commands and Utilities Reference - z/VM - IBM

DEFINE CHPID / PATH
128 z/VM: CP Commands and Utilities Reference
CBY
tells CP that this is an ESCON channel that attaches to an ESCON converter in
byte mode.
ESCON_CTC
CTC
tells CP that this ESCON channel path provides channel-to-channel adapter
communications.
FICON
FC
tells CP that this channel uses the Fibre Connection (FICON) channel to control
unit interface to transmit data through optical cables.
FICON_CONVerter
FCV
tells CP that this is a FICON channel that attaches to an ESCON Director with
a FICON Bridge card.
SWitch nn
is the number of the IBM 9032 or 9033 ESCON Director to which all of the
channel paths are assigned. The variable nn must be a 1- to 2-digit
hexadecimal number between X'00' and X'FF'.
INTERNAL_COUPLING_Peer_channel
ICP
tells CP that this is an internal coupling peer channel path.
PEERpath nn
is the ″peer channel path″, the one to which the channel path being defined is
connected. The second to-be-defined path of a pair of connected ICP paths
must specify this parameter. The variable nn must be a 1- to 2-digit
hexadecimal number between X'00' and X'FF'.
Note: If you mistakenly define two connected ICP paths without defining their
association with this parameter, one of the paths must be deleted and
redefined using this parameter.
PEERCSS nn
identifies the channel subsystem where the ″peer channel path″ is defined. The
variable nn must be a 1- to 2-digit hexadecimal number between X'00' and
X'0F'. Your machine is likely to support less.
INTERNAL_QUEUED_direct_communication_channel
IQD
tells CP that this is an internal-queued-direct-communication channel.
FIBRE_CHANNEL_PROTOCOL_channel
FCP
tells CP that this is a SCSI fibre channel protocol (FCP) path.
MFS nn
is the maximum frame size (in kilobytes) to be used by the
internal-queued-direct-communication channel being defined. If an MFS value is
not specified, the default value of 16 will be used. If an MFS value is specified,
the variable nn must be a 2–digit decimal number with a value of 16, 24, 40, or
64.
INTERNAL_SYStem_device
ISD
tells CP that this is a channel path to an internal system device.