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• IEEE 802.1Q VLAN
• IEEE 802. 1x user authentication
• 1000BASE-X (SFP)
• 1000BASE-SX
• 1000BASE-LX/LH
• 1000BASE-ZX
• RMON I and II standards
Indicator and Port Specifications
• Fan, PS1, PS2
• Power supply status: Green (operational)/red (faulty)
• System status: Green (operational)/red (faulty)
• Console: RJ-45 female
• SFP ports: Link
• Image management port: 10/100BASE-TX (RJ-45 female) data terminal equipment (DTE); green (good)/orange (disabled)/off (not connected)
Supported SFPs
Table 2 lists the SFPs supported by the Cisco Catalyst 4948.
Table 2. SFPs Supported by Cisco Catalyst 4948
SFP
Gigabit Ethernet SFP, LC connector LH transceiver
Gigabit Ethernet SFP, LC connector SX transceiver
Gigabit Ethernet SFP, LC connector ZX transceiver
Gigabit Ethernet SFP, RJ-45 connector, 10/100/1000BASE-T transceiver
Cisco Coarse Wavelength-Division Multiplexing (CWDM) SFP 1470 nm; Gigabit Ethernet and 1Ggigabit/2G FC (grey)
Cisco CWDM SFP 1490 nm; Gigabit Ethernet and FC (violet)
Cisco CWDM SFP 1510 nm; Gigabit Ethernet and FC (blue)
Cisco CWDM SFP 1530 nm; Gigabit Ethernet and 1G/2G FC (green)
Cisco CWDM SFP 1550 nm; Gigabit Ethernet and FC (yellow)
Cisco CWDM SFP 1570 nm; Gigabit Ethernet and FC (orange)
Cisco CWDM SFP 1590 nm; Gigabit Ethernet and FC (red)
Cisco CWDM SFP 1610 nm; Gigabit Ethernet and FC (brown)
Power Supply Specifications
The Cisco Catalyst 4948 offers a choice of 300 watt 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 (refer to Table 3).
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