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Page 9 of 14
Supported X2 Optics
Table 3 lists the X2 optics supported by the Cisco Catalyst 4948-10GE.
Table 3. X2 Optics Supported by Cisco Catalyst 4948-10GE
Type Maximum Distance over Specified Medium
LR
10 km on single-mode fiber (SMF) (G.652)
CX4
Up to 15m on IBX4 cable
LX4
300m on multimode fiber (MMF)
SR
26m on MMF
ER
40 km on SMF*
* Available in Q4 2005
Power-Supply Specifications
The Cisco Catalyst 4948-10GE offers a choice of 300-watt (W) AC or DC power supplies. The switch can operate with one power supply present.
When two power supplies are installed, the switch shares the power load between the two supplies (Table 4).
Table 4. AC and DC Power-Supply Specifications
300W AC 300W DC
Input Current
• 4A at 100V
• 2A at 240V
8A at –48 to –60V
Output Current
25A at 12 VDC 25A @ 12 VDC
Weight
Weight 2.0 kg Weight 2.0 kg
Heat Dissipation
1023 BTU/hr 1023 BTU/hr
Switch Dimensions
• Width: 17.290 inches (43.9166 centimeters [cm])
• Depth: 16.14 inches (40.9956 cm)
• Height: 1.712 inches (4.445 cm)
• Weight: 16.5 pounds (7.48 kilograms [kg]) with one power supply
Software Requirements
The Cisco Catalyst 4948-10GE is supported only in Cisco IOS Software and is not supported in the Cisco Catalyst Operating System Software
(CatOS). The minimum software version is Cisco IOS Software Release 12.2(25)EWA or later.
Environmental Conditions
• Operating temperature: 32º to 104ºF (0º to 40ºC)
• Storage temperature: –40º to 167ºF (–40º to 75ºC)
• Relative humidity: 10 to 90 percent, noncondensing
• Operating altitude: –60 to 2000m