Reference our Specs

32 Gbps maximum forwarding bandwidth at Layer 2 and Layer 3 switching fabric

Stack forwarding rate of 38.7 million packets per second (mpps) for 64-byte packets

Forwarding rate: 6.5 mpps (Cisco Catalyst 3750-24-TS), 13.1 mpps (Cisco Catalyst 3750-48TS), 17.8 mpps (Cisco Catalyst 3750G-12S), 35.7 mpps (Cisco Catalyst 3750G-24T), 38.7 mpps (Cisco Catalyst 3750G-24TS)

128 MB DRAM and 16 MB flash memory (Cisco Catalyst 3750G-24TS, Cisco Catalyst 3750G-24T, Cisco Catalyst 3750G-12S, Cisco Catalyst 3750-24TS, and Cisco Catalyst 3750-48TS)

Configurable up to 12,000 MAC addresses (Cisco Catalyst 3750G-24TS, Cisco Catalyst 3750G-24T, Cisco Catalyst 3750G-12S, Cisco Catalyst 3750-24TS, and Cisco Catalyst 3750-48TS)

Configurable up to 20,000 unicast routes (Cisco Catalyst 3750G-12S) and up to 11,000 unicast routes (Cisco Catalyst 3750G-24TS, Cisco Catalyst 3750G-24T, Cisco Catalyst 3750-24TS, and Cisco Catalyst 3750-48TS)

Configurable up to 1000 IGMP groups and multicast routes (Cisco Catalyst 3750G-24TS, Cisco Catalyst 3750G-24T, Cisco Catalyst 3750G-12S, Cisco Catalyst 3750-24TS, and Cisco Catalyst 3750-48TS)

Configurable maximum transmission unit (MTU) of up to 9018 bytes (jumbo frames) for bridging on Gigabit Ethernet ports, and up to 1546 bytes for bridging and routing on Fast Ethernet ports

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

1000BASE-T SFP-based ports: RJ-45 connectors, 2-pair Category 5 UTP cabling

1000BASE-SX, -LX/LH, -ZX, and CWDM SFP-based ports: LC fiber connectors (single-mode or multimode fiber)

Cisco StackWise stacking ports: copper-based Cisco StackWise cabling

Management console port: RJ-45-to-DB9 cable for PC connections

Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications

System-status LEDs: system, RPS, and bandwidth-utilization indications

188,574 hours (Cisco Catalyst 3750G-24TS)

210,936 hours (Cisco Catalyst 3750G-24T)

215,000 hours (Cisco Catalyst 3750G-12S)

217,824 hours (Cisco Catalyst 3750-48TS)

294,928 hours (Cisco Catalyst 3750-24TS)

Limited lifetime warranty

Customers can provide power to a switch by using either the internal power supply or the Cisco RPS 675. The connectors are located at the back of the switch.

Internal Power Supply Connector

• The internal power supply is an auto-ranging unit.

• The internal power supply supports input voltages between 100 and 240 volts alternating current (VAC)

• Use the supplied alternating-current (AC) power cord to connect the AC power connector to an AC power outlet.

Cisco RPS Connector

• The connector offers connection for an optional Cisco RPS 675 that uses AC input and supplies direct-current (DC) output to the switch.

• The connector offers a 675-watt (W) RPS that supports up to 6 external network devices and provides power to 1 failed device at a time.

• The connector automatically senses when the internal power supply of a connected device fails and provides power to the failed device, preventing loss of network traffic.

• Only the Cisco RPS 675 (Model PWR675-AC-RPS-N1=) should be attached to the redundant power supply receptacle.

165 W (maximum), 563 BTUs per hour (Cisco Catalyst 3750G-24TS)

135 W (maximum), 460 BTUs per hour (Cisco Catalyst 3750G-24T)

120 W (maximum), 409 BTUs per hour (Cisco Catalyst 3750G-12S)

42 W (maximum), 143 BTUs per hour (Cisco Catalyst 3750-24TS)

60 W (maximum), 205 BTUs per hour (Cisco Catalyst 3750-48TS)

100 to 127/200 to 240 VAC (autoranging), 50 to 60 Hertz (Hz)

RPS input

+12V at 17 A (Cisco Catalyst 3750G-24TS)

+12V at 13 A (Cisco Catalyst 3750G-24T and Catalyst 3750G-12S)

+12V at 8.5 A (Cisco Catalyst 3750-48 and Cisco Catalyst 3750-24)

2.59 x 17.5 x 11.6 in. (6.58 x 44.5 x 29.5 cm) (Cisco Catalyst 3750G-24TS

1.73 x 17.5 x 12.83 in. (4.39 x 44.5 x 32.6 cm) (Cisco Catalyst 3750G-24T)

1.73 x 17.5 x 12.83 in. (4.39 x 44.5 x 32.6 cm) (Cisco Catalyst 3750G-12S)

1.73 x 17.5 x 11.83 in. (4.39 x 44.5 x 30.0 cm) (Cisco Catalyst 3750-48TS)

1.73 x 17.5 x 11.83 in. (4.39 x 44.5 x 30.0 cm) (Cisco Catalyst 3750-24TS)

12.5 lb (5.68 kg) (Cisco Catalyst 3750G-24TS)

10.0 lb (4.54 kg) (Cisco Catalyst 3750G-24T and Catalyst 3750G-12S)

9.1 lb (4.1 kg) (Cisco Catalyst 3750-48TS)

8.0 lb (3.6 kg) (Cisco Catalyst 3750-24TS)

32 to 113°F (0 to 45°C)

-13 to 158°F (-25 to 70°C)

10 to 85% (noncondensing)

Up to 10,000 ft (3048 m)

Up to 15,000 ft (4572 m)

International Organization for Standardization (ISO) 7779: bystander position operating to an ambient temperature of 30°C

Cisco Catalyst 3750G-24TS: 42 decibels (dB)

Cisco Catalyst 3750G-24T: 42 dB

Cisco Catalyst 3750G-12S: 42 dB

Cisco Catalyst 3750-48TS: 42 dB

Cisco Catalyst 3750-24TS: 42 dB

UL to UL 60950, Third Edition

C-UL to CAN/CSA C22.2 No. 60950-00, Third Edition

TUV/GS to EN 60950:2000

CB to IEC 60950 with all country deviations

NOM to NOM-019-SCFI

CE marking

FCC Part 15 Class A

EN 55022: 1998 (CISPR22)

EN 55024: 1998 (CISPR24)

VCCI Class A

AS/NZS 3548 Class A

CE

CNS 13438 Class A

MIC

CLEI code