FUJITSU Primergy Blade Server Systems BX600 - Handbuch (Seite 32)

1000BASE-T Cable Requirements Making Network Connections
Intelligent Blade Panel Module 31
!
i
Do not plug a phone jack connector into any RJ-45 port. This may
damage the IBP. Instead, use only twisted-pair cables with RJ-45
connectors that conform with FCC standards.
For 1000 Mbps operation, all four wire pairs in the cable must be connected. When
auto-negotiation is enabled, the 1000BASE-T ports support the auto MDI/MDI-X feature,
which means that at any operating speed (10, 100, or 1000 Mbps), either straight-through
or crossover cables can be used to connect to any server, workstation, or other network
device. Make sure each twisted-pair cable does not exceed
100 meters (328 feet). (Note that auto-negotiation must be enabled to support auto
MDI/MDI-X.)
4.2 1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100BASE-TX connections should also work for
1000BASE-T, providing that all four wire pairs are connected. However, it is recommended that
for all critical connections, or any new cable installations, Category 5e (enhanced Category 5)
cable should be used. The Category 5e specification includes test parameters that are only
recommenda- tions for Category 5. Therefore, the first step in preparing existing Category 5
cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it
complies with the IEEE 802.3ab standards.
4.2.1 Cable Testing for Existing Category 5 Cable
Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and
Far-End Crosstalk (FEXT). This cable testing infor- mation is specified in the
ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test parameters for Return
Loss and Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in the
ANSI/TIA/EIA-TSB-95Bulletin, “The Additional Transmission Performance Guidelines for 100
Ohm 4- Pair Category 5 Cabling”.
Note that when testing your cable installation, be sure to include all patch cables between IBP
and end devices.