Cisco Catalyst Series Switch 2940 Datasheet page 7

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Table 2
Hardware Specifications
Description
Performance
100BASE-FX fiber-port
power levels
Connectors and cabling
Power connectors
Indicators
Dimensions
Weight
Environmental Ranges
Acoustic Noise
Telco CLEI Code
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Specification
• 3.6 Gbps maximum forwarding bandwidth
• 2.7 Mpps wire-speed forwarding rate (based on 64-byte packets)
• 16 MB DRAM and 8 MB Flash memory
• Configurable up to 8000 MAC addresses
• Configurable up to 255 multicast groups
• Configurable maximum transmission unit (MTU) of up to 1500 bytes
• 4 802.1Q VLANs
• 1005 VLAN IDs
Optical transmitter wavelength: 1300 nm (nanometer)
Optical receiver sensitivity for 50/125-micron cabling: –33.5 to –11.8 dBm (decibel
milliwatt)
Optical receiver sensitivity for 62.5/125-micron cabling: –33.5 to –11.8 dBm
Optical transmitter power for 50/125-micron cabling: –23.5 to –14 dBm
Optical transmitter power for 62.5/125-micron cabling: –20 to –14 dBm
• 10BASE-T ports: RJ-45 connectors; 2-pair Category 3, 4, or 5 unshielded
twisted-pair (UTP) cabling
• 100BASE-TX ports: RJ-45 connectors; 2-pair Category 5 UTP cabling
• 1000BASE-T ports: RJ-45; 2-pair Category 5 UTP cabling
• 100BASE-FX ports: MT-RJ connectors, 50/125 or 62.5/125 micron multimode
fiber-optic cabling
• 1000BASE-SX, -LX/LH, -T SFP-based port: LC fiber connectors, single-mode or
multimode fiber, and RJ-45 connector for copper
• Management console port: Use RJ-45-to-DB9 cable for PC connections
• The internal power supply is an autoranging unit, supporting input voltages
between 100 and 240 volts alternating current (VAC)
• Use the supplied AC power cord to connect the AC power connector to an
AC power outlet
• Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex
indications
• System-status LED
(H x W x D) 1.55 x 10.6 x 6.42 in.
(3.94 x 26.92 x 16.3 cm)
3 lb (1.36 kg)
• Operating temperature 32 to 113 F (0 to 45 C)
• Storage temperature –13 to 158 F (–25 to 70 C)
• Operating humidity 10 to 85% (noncondensing)
• Operating altitude up to 10,000 ft (3000 m)
• Storage altitude up to 15,000 ft (4570 m)
International Organization for Standardization (ISO) 7779:
bystander position operating to an ambient temperature of 30 C: 0 decibels (dB)
• 2940-8TF: CNMEG00ARA
• 2940-8TT: CNMEH00ARA
Cisco Systems, Inc.
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