Teledyne LeCroy IBTrainer - IBTrainer Users Manual - Manual (Page 23)

InfiniBand Overview of the IBTrainer
CATC IBTrainer InfiniBand Exerciser, August 2002
23
InfiniBand
InfiniBand architecture The InfiniBand Architecture (IBA) is designed around a point-to-point,
switched I/O fabric, whereby end node devices (which can range from
very inexpensive I/O devices like single chip SCSI or ethernet adapters to
very complex host computers) are interconnected by cascaded switch
devices. The physical properties of the IBA interconnect support two
predominant environments, with bandwidth, distance and cost
optimizations appropriate for these environments:
• Module-to-module, as typified by computer systems that support I/O
module add-in slots
• Chassis-to-chassis, as typified by interconnecting computers, external
storage systems, and external LAN/WAN access devices (such as
switches, hubs, and routers) in a data-center environment.
InfiniBand specification The design and implementation of the IBTrainer and its test capabilities
is based on the InfiniBand Specification InfiniBand
TM
Architecture
Specification Volume 1 and 2 Release 1.0.a from June 19, 2001.
The IBTrainer 4x (by four) Exerciser for InfiniBand uses the electrical
4x connection as set down in the InfiniBand Specification.
• The signalling rate for encoded data on the media is 2.5 Gbits/sec,
which results in a data rate that can be considered to be 250
MBytes/second. The connections are point to point and full duplex,
unidirectional.
• The byte stream on each physical lane is encoded using the industry
standard 8B/10B coding.
• The following interface width is available for the IBTrainer:
8 differential pairs, 4 per direction for a total of 16 wires