Alloy Computer Products 16/24 gigabit web managed switch, GSS-16T4SFP, GSS-24T4SFP 2.1.2. Cabling Requirements ,

GSS Series User Manual

2.1.2. Cabling Requirements

To help ensure a successful installation and keep network performance at optimum levels,

take care to use Cat.5E grade or higher cabling. Ensure that stranded core UTP cable, if

used, runs for no more than 10 metres, and that solid core runs for a maximum of 100metres.

Poor cabling is the most common cause for network dropouts or poor performance.

2.1.2.1. Cabling Requirements for UTP Ports

• For Ethernet copper network connections, the UTP cable used must be Cat.3 grade as a

minimum, with a maximum length of 100 metres

• For Fast Ethernet copper network connections, the UTP cable used must be Cat.5 grade

as a minimum, with a maximum length of 100 metres

• For Gigabit Ethernet copper network connection, UTP cable used must be Cat.5 grade or

higher, with a maximum length of 100 metres. Cat.5e grade UTP cable is recommended.

2.1.2.2. Cabling Requirements for 1000SX/LX/ZX SFP Modules

There are two categories of fibre optic cable - multimode (MM) and single mode (SM). The

later is categorised into several classes by the distance it supports. These are SX, LX, LHX,

ZX and EZX. The majority of mini-GBIC modules available use a LC type connector. The

connector types used currently on Alloy mini-GBIC modules are LC and WDM SC, for the

following module types:

• Gigabit Fibre with multimode LC mini-GBIC modules

• Gigabit Fibre with single mode LC mini-GBIC modules

• Gigabit Fibre with single mode/single core WDM SC 1310nm mini-GBIC modules

• Gigabit Fibre with single mode/single core WDM SC 1550nm mini-GBIC modules

The following table; lists the types of fibre optic cable that are supported by SFP mini-GBIC

modules installed in the GSS series switches. Other cable types not listed here may be

supported; please contact the supplier of your switch for details.

Multimode Fibre Cable and Modal Bandwidth

Multimode 62.5/125μm Multimode 50/125μm

Modal

Bandwidth Range Modal

Bandwidth Range

160MHz-Km 220m 400MHz-Km 500m

IEEE 802.3z

Gigabit Ethernet

1000SX 850nm

200MHz-Km 275m 500MHz-Km 550m

Single mode Fibre 9/125μm

Single mode transceiver 1310nm 10Km, 40Km

1000Base-

LX/LHX/XD/ZX

Single mode transceiver 1550nm 40Km, 70Km, 120Km

TX(Transmit) 1310nm

Single mode

*20Km, 40Km RX(Receive) 1550nm

TX(Transmit) 1550nm

1000Base-LX

Single Fibre

(WDM SC) Single mode

*20Km, 40Km RX(Receive) 1310nm