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Description of Hardware
1-9
1000BASE-SX GBIC transceivers provide one short-wavelength (850 nm) Gigabit
port that can be used for a high-speed backbone or server connection. This port can
be connected to a site up to 220 m (722 ft) away with 62.5/125 micron multimode
fiber cable, or up to 500 m (1641 ft) with 50/125 micron multimode fiber cable.
1000BASE-LX GBIC transceivers provide one long-wavelength (1300 nm) Gigabit
port that can be used for a high-speed backbone or server connection. This port can
be connected to a site up to 5 km (16404 ft) away with single-mode fiber cable.
1000BASE-LH GBIC transceivers provide one long-wavelength (1550 nm) Gigabit
port that can be used for a long-haul connection to a remote location. This port can
be connected to a site up to 70 km (43.5 miles) away with single-mode fiber cable.
Caution: Install only 5 V GBIC transceivers into the module slots
Optional 1000BASE-T Module (VM2512A-1GT)
Figure 1-9. Single-Port 1000BASE-T Gigabit Module
Using Category 5 or 5e twisted-pair cable you can connect to another device up to
100 m (328 ft) away. The 1000BASE-T module operates at 10, 100, or 1000 Mbps,
full duplex, and supports auto-negotiation of speed and flow control. Note that you
should first test the cable installation for IEEE 802.3ab compliance. See
“1000BASE-T Cable Requirements” on page B-3.
If the attached device does not support auto-negotiation, you will have to manually
configure the other device to match the speed and duplex mode with no flow control.
Optional 10/100BASE-TX Module (VM2512A-1TX)
Figure 1-10. 1-Port 10/100BASE-TX Module
Using Category 3, 4, or 5 twisted-pair cable for 10 Mbps links or Category 5
twisted-pair cable for 100 Mbps links, you can connect to another device up to
100 m (328 ft) away. The 10/100BASE-TX module operates at 10/100 Mbps, full
and half duplex, and supports auto-negotiation of speed and flow control.
VM2512A-1GT
1000BASE-T Module
10/100BASE-TX Module
VM2512A-1TX