Oracle Sun Datacenter InfiniBand Switch 648, Руководство по установке

Страница: 19 / 140

Preparing the Site 9
Management Cable Requirements
Management of the switch is done at the management console, which is either a
serial device attached to the SER MGT port of the CMC or a 10/100 Ethernet
connection at the NET MGT port of the CMC.
Typically, the SER MGT connection to the serial device is only used for the initial
startup and configuration of the switch. The serial device can be a serial terminal, a
terminal server, or a serial connection running on a system or laptop. Because of the
nature of the signal, a serial management cable cannot be reliably used if it is more
than 10 m long.
You can use the NET MGT connection after the switch has been configured to do so
with serial management connection. The advantage of the NET MGT connection is
that administration of the switch can happen from anywhere on the network. There
is no cable length constraint for the network management route because of the
re-amplification, filtering, and processing that happens at each hub or switch within
the Ethernet network. No network management cable should be more than 100 m
long.
Serial device adapters enable you to use an Ethernet cable for serial management
purposes.
Note –
Do not use a cable longer than 10m for serial management.
Related Information
■
“Network Management Connector and Pins” on page 4
■
“Serial Management Connector and Pins” on page 5
■
“Attach the Management Cables” on page 76
Understanding InfiniBand Cabling
These topics describe InfiniBand cabling:
■
“InfiniBand Cable Cautions” on page 10
■
“InfiniBand Cable Guidelines” on page 11
■
“InfiniBand Cable Types” on page 12
■
“InfiniBand Cable Path Lengths” on page 12
■
“InfiniBand Cable Bundling” on page 13