HP Cluster Platform Interconnects v2010 Quadrics QsNetII Interconnect - Page 157

Clock Distribution

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F 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

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F
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