IBM z13s Technical Manual page 203

CHPIDs per port and seven subchannels (devices) per CHPID. ICA SR supports
transmission of STP messages.
Parallel Sysplex using IFB connects to z13, z13s, zEC12, zBC12, z196, or z114 servers.
12x InfiniBand coupling links are fiber optic connections that support a maximum distance
of up to 150 meters (492 ft.). IFB coupling links are defined as CHPID type CIB. IFB
supports transmission of STP messages.
z13s servers support one type of 12x InfiniBand coupling link: FC 0171 HCA3-O (12xIFB)
fanout.
IFB LR: InfiniBand Long Reach (IFB LR) connects to z13, z13s, zEC12, zBC12, z196, or
z114 servers. 1x InfiniBand coupling links are fiber optic connections that support a
maximum unrepeated distance of up to 10 km (6.2 miles), and up to 100 km (62 miles)
with a z Systems qualified DWDM. IFB LR coupling links are defined as CHPID type CIB,
and support 7 or 32 subchannels per CHPID. IFB LR supports transmission of STP
messages.
z13s servers support one type of 1x InfiniBand coupling link: FC 0170 HCA3-O LR (1xIFB)
fanout.
Internal Coupling (IC): CHPIDs (type ICP) that are defined for internal coupling can
connect a CF to a z/OS LPAR in the same z13s server. IC connections require two
CHPIDs to be defined, which can be defined only in peer mode. A maximum of 32 IC
CHPIDs (16 connections) can be defined.
Note: ISC-3, HCA2-O, and HCA2-O LR are not supported on z13s servers. The zEC12
and zBC12 are the last servers that support ISC-3, HCA2-O, and HCA2-O LR coupling
links (by carry-forward only). HCA3-O (LR) on z13s servers, however,
HCA2-O (LR) on previous generation servers.
IFB and IFB LR links contend for adapter space. Total port counts vary depending upon the
number of configured IFB links, IFB LR links, and I/O drawers (I/O drawers that are
connected through HCA2-C).
Table 4-12 shows the coupling link options.
Table 4-12 Coupling link options
Type Description
IFB 12x
InfiniBand
b
(HCA3-O)
IFB LR 1x IFB
(HCA3-O LR)
IC Internal coupling
channel
SR
ICA Integrated
Coupling Adapte
a. The link data rates do not represent the actual performance of the link. The actual performance depends on many
factors including latency through the adapters, cable lengths, and the type of workload.
Use
s to ,
z13 z13 z13s,
zEC12, zBC12,
z196, z114
to ,
z13 z13 z13s,
zEC12, zBC12,
z196, z114
Internal
communication
to
z13 z13, z13s
r
Chapter 4. Central processor complex I/O system structure
Link Distance
a
rate
6 GBps 150 meters
(492 feet)
2.5 Gbps 10 km unrepeated
5.0 Gbps (6.2 miles)
100 km repeated
(62 miles)
Internal N/A
speeds
8 GBps 150 meters
(492 feet)
can
connect to
z13s-N10 z13-N20
Maximum Maximum
# ports # ports
c c
4 16
c c
8 32
d d
32 32
8 16
175