T
WISTED
-P
AIR
C
ABLE
AND
P
IN
A
SSIGNMENTS
B-5
1000BASE-T is a simple test of the cable installation to be sure that it
complies with the IEEE 802.3ab standards.
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
information 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-95 Bulletin, “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 switches and end devices.
Adjusting Existing Category 5 Cabling to Run 1000BASE-T
If your existing Category 5 installation does not meet one of the test
parameters for 1000BASE-T, there are basically three measures that can be
applied to try and correct the problem:
1. Replace any Category 5 patch cables with high-performance Category
5e or Category 6 cables.
2. Reduce the number of connectors used in the link.
3. Reconnect some of the connectors in the link.
Содержание 8700S-130
Страница 2: ......
Страница 18: ...TABLE OF CONTENTS xiv ...
Страница 20: ...TABLES xvi ...
Страница 22: ...FIGURES xviii ...
Страница 32: ...ABOUT THE TIGERSTACK 10G 1 10 ...
Страница 50: ...INSTALLING THE SWITCH 3 12 ...
Страница 74: ...ORDERING INFORMATION D 2 ...
Страница 80: ...GLOSSARY Glossary 6 ...
Страница 84: ...INDEX Index 4 ...
Страница 85: ......