Technical Specifications

Environmental

Temperature, ambient operating

32ºF (0ºC) to 104ºF (40ºC)

Temperature, ambient nonoperating and storage

-40 to 158ºF (-40 to 70ºC)

Humidity (RH), ambient (noncondensing) operating

10% to 90%

Humidity (RH), ambient (noncondensing) nonoperating and storage

5% to 95%

Altitude, operating

Sea level to 10,000 ft (3050 m)

Altitude, nonoperating

Sea level to 40,000 ft (12,200 m)

Backplane

1.2-Gbps, frame-based switching fabric

Microprocessor

25-MHz 68EC040 for the NMP¹ (Catalyst 2926 series switch)

150-MHz IDT R4700 RISC processor
(Catalyst 2926G series switch)

Memory

Catalyst 2926 series switch

DRAM: 16 MB

Flash (onboard): 4 MB

NVRAM: 256 KB

Catalyst 2926G series switch

DRAM: 32 MB

Flash (onboard): 4 MB

Flash PC Card: 16 MB or 20 MB

NVRAM: 512 KB

Dimensions (H x W x D)

5.75 x 17 x 18 in. (14.6 x 43.18 x 46.72 cm)

Weight

35 lb (15.9 kg) with 2 power supplies, 24 switched 10/100-Mbps ports, and 1 supervisor engine

Catalyst 2926 series supervisor engine

• RJ-45 IEEE 802.3u 100BaseTX Fast Ethernet
  
  
• MII 100BaseTX Fast Ethernet
  
  
• SC multimode fiber-optic 100BaseFX Fast Ethernet
  
  

Catalyst 2926G series supervisor engine

• SC multimode fiber-optic 1000BaseSX
  
  
• SC multimode or single-mode fiber-optic 1000BaseLX/LH
  
  

10/100-Mbps Fast Ethernet ports

RJ-45 IEEE 802.3u Fast Ethernet 10/100BaseTX

Power supply output capacity

155W maximum

System power dissipation

155W maximum configuration, 120W typical

System heat dissipation

850 Btus²/hr

AC-input voltage

100 to 240 VAC

AC frequency

50 to 60 Hz

AC-input current

6.0A maximum

Power supply output

+5.15V @ 26A, +12V @ 1.5A, +24V @ 0.1A

AC Power with Power Factor Correction

Power supplyoutput capacity

175W maximum

System power dissipation

155W maximum configuration, 100W typical

System heat dissipation

950 Btus/hr

AC-input voltage

90 to 264 VAC autoranging

AC frequency

47 to 63 Hz

AC-input current

3.0A maximum @ 110 VAC, 1.5A maximum @ 220 VAC

Power supply output

+5.15V @ 30A, +12V @ 1.5A, +24V @ 0.1A

300 cfm³ through system fan assembly

Catalyst 2926 series switch

Fiber-optic supervisor engine:
MMF⁴: 1.2 miles (2 km) full duplex, 121 feet
(400 m), half duplex

10/100BaseTX Fast Ethernet: Category 5 UTP⁵: 328 ft (100 m)

Catalyst 2926G series switch

1000BaseSX Gigabit Ethernet MMF (850 nm wavelength):

• 62.5-micron core size, 160 MHz-km modal bandwidth, 722 ft. (220 m) cable distance
  
  
• 62.5-micron core size, 200 MHz-km modal bandwidth, 902 ft. (275 m) cable distance
  
  
• 50.0-micron core size, 400 MHz-km modal bandwidth, 1640 ft. (500 m) cable distance
  
  
• 50.0-micron core size, 500 MHz-km modal bandwidth, 1804 ft. (550 m) cable distance
  
  

1000BaseLX/LH Gigabit Ethernet MMF⁶ (1300 nm wavelength):

• 62.5-micron core size, 500 MHz-km modal bandwidth, 1804 ft. (550 m) cable distance
  
  
• 50.0-micron core size, 400 MHz-km modal bandwidth, 1804 ft. (550 m) cable distance
  
  
• 50.0-micron core size, 500 MHz-km modal bandwidth, 1804 ft. (550 m) cable distance
  
  

1000BaseLX/LH Gigabit Ethernet SMF⁷ (1300-nm wavelength):

• 9/10-micron core size, 32,810 ft. (10 km) cable distance
  
  

Transparent bridging (802.1d)

SNMP⁸ agent

Safety


EMI⁹

UL¹⁰ 1950, CSA¹¹ C22.2 No. 950, EN 60950, IEC 950, TS¹² 001, AS/NZS 3260, CE¹³ Marking

FCC Class A (47 CFR, Part 15), ICES¹⁴-003 Class A, CISPR22 Class A, CE Marking, EN55022 Class A and VCCI Class A, AS/NZS3548 Class A with UTP cables

EN55022 Class B, CISPR22 Class B, AS/NZS 3590 Class B, VCCI¹⁵ Class B with STP¹⁶ cables