Introduction
1 | 2 | 3 | 2 | 3 |
1 | Cooling fan (4) | | 3 Power switches on power supplies |
2 | Power supply (2) | | (2) | |
| | |
Figure 1–3: Edge Switch 2/32 (Rear View)
SFP Transceivers
A single-mode or multi-mode fiber-optic cable attaches to a port through a pluggable small form factor (SFP) transceiver. The SFP provides a duplex LC interface, and can be detached from the switch port for easy replacement. Two fiber-optic transceiver types are available:
•Shortwave laser — Shortwave laser SFPs provide short-distance connections (2 to 500 meters) through 50-micron or 62.5-micron multi-mode fiber.
•Longwave laser — Longwave laser SFPs provide long-distance connections (up to 10 kilometers) through 9-micron single-mode fiber.
Cooling Fans
Four fans (each a separate FRU) provide cooling for the switch power supplies and the control processor (CTP) card, as well as redundancy for continued operation if a single fan fails.
Each fan FRU can be replaced while the switch is operating.
Power Supplies
Redundant, load-sharing power supplies step down and rectify facility input power to provide 3.3 volts direct current (VDC), 5 VDC, and 12 VDC to the CTP. The power supplies also provide input filtering, overvoltage protection, and overcurrent protection. Either power supply can be replaced while the switch is operational.