Quadrics QsNetII Interconnect

Cable Types

This appendix explains the types of cables used in the interconnect , and illustrates

the default wiring topology for standalone and federated networks.

There are four types of interconnect cables:

JTAG The JTAG cable connects the parallel port on the

switch-managing node to the JTAG port on the

interconnect. The JTAG cable is a 1-m IEEE1284

parallel-port cable.

Link A link cable connects each node to the interconnect. In a

federated configuration, link cables also connect node-level

interconnects to top-level interconnects. Each link cable

uses 20 sets of differential pairs — 10 pairs in each

direction. There is an automatic link de-skew sequence

when cables are connected.

Ethernet The Ethernet cable connects the Ethernet port on the

interconnect control processor to the management network.

Clock Distribution In a federated configuration, each interconnect is connected

to an HP Cluster Platform clock distribution box by

a shielded CAT–V clock distribution cable. The clock

distribution cables are very similar to the Ethernet cables

— both are fitted with RJ45 connectors. When cabling the

system, be sure not to mix the cables.

Cable Types F-1