2-1-2. Cabling Requirements
To help ensure a successful installation and keep the network performance good, please take care of the
cabling requirement. Cables with worse specification will cause the LAN to work poorly.
2-1-2-1. Cabling Requirements for TP Ports
⇒
For Fast Ethernet TP network connection
The grade of the cable must be Cat. 5 or better, with a maximum length of 100 meters.
⇒
Gigabit Ethernet TP network connection
The grade of the cable must be Cat. 5e or better, with a maximum length of 100 meters.
2-1-2-2. Cabling Requirements for 1000SX/LX SFP Module
It is more complex and comprehensive contrast to TP cabling in the fiber media. Basically, there
are two categories of fiber, multimode (MM) and singlemode (SM). The latter is categorized into several
classes by the distance it supports. They are SX, LX, LHX, XD, and ZX. From the viewpoint of connector
type, there mainly are LC and BIDI SC.
Gigabit Fiber with multimode LC SFP module
Gigabit Fiber with singlemode LC SFP module
Gigabit Fiber with BiDi SC 1310nm SFP module
Gigabit Fiber with BiDi SC 1550nm SFP module
The following table lists the types of fiber that we support and those else not listed here are
available upon request.
Multimode Fiber Cable and Modal Bandwidth
Multimode 62.5/125
µ
m
Multimode 50/125
µ
m
Modal
Bandwidth
Distance
Modal
Bandwidth
Distance
160MHz-Km
220m
400MHz-Km
500m
IEEE 802.3z
Gigabit Ethernet
1000SX 850nm
200MHz-Km
275m
500MHz-Km
550m
Singlemode Fiber 9/125
µ
m
Singlemode transceiver 1310nm 10, 40 Km
1000BaseLX/LH
X/XD/ZX
Singlemode transceiver 1550nm 40, 75, 110 Km
TX(Transmit) 1310nm
Singlemode
*20Km
RX(Receive) 1550nm
TX(Transmit) 1550nm
1000BaseLX
Single Fiber
(BIDI SC)
Singlemode
*20Km
RX(Receive) 1310nm
Table2-1
2-1-2-3. Switch Cascading in Topology
•
••
•
Takes the Delay Time into Account
Theoretically, the switch partitions the collision domain for each port in switch cascading that you
may up-link the switches unlimitedly. In practice, the network extension (cascading levels & overall
diameter) must follow the constraint of the IEEE 802.3/802.3u/802.3z and other 802.1 series protocol
