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Cisco 3750 Series Switches

Cisco 3750 Switches
The Cisco Catalyst 3750 v2 Series are next-generation energy-efficient Layer 3 Fast Ethernet stackable switches. Ware247 recommends these switches for the EnergyWise technology, which helps you reduce the energy costs and carbon footprint of your network.

Cisco 3750 Series Switches

For midsized organizations and enterprise branch offices, the Cisco Catalyst 3750 Series Switches eases deployment of converged applications and adapts to changing business needs by providing configuration flexibility, support for converged network patterns, and automation of intelligent network services configurations. In addition, the Cisco Catalyst 3750 Series is optimized for high-density Gigabit Ethernet deployments and includes a diverse range of switches that meet access, aggregation, or small-network backbone-connectivity requirements.


Ease of Use: "Plug-and-Play" Configuration

A working stack is self-managing and self-configuring. When switches are added or removed, the master switch automatically loads the Cisco IOS® Software revision running on the stack to the new switch, loads the global configuration parameters, and updates all the routing tables to reflect changes. Upgrades are applied universally and simultaneously to all members of the stack.

The Cisco Catalyst 3750 Series Switches stacks up to nine switches as a single logical unit for a total of 468 Ethernet or PoE 10/100 ports, or 468 Ethernet 10/100/1000 ports or PoE 10/100/1000 ports, or nine 10 Gigabit Ethernet ports. Additional port combinations can be created by connecting the Cisco Catalyst 3750-E Series Switches to the stack.

  • Individual 10/100, 10/100/1000, and 10 Gigabit Ethernet units can be joined in any combination to evolve with network needs.
  • Return on Investment Through Lower Operations Costs

  • The automatic Cisco IOS Software version checking and loading of the global configuration parameters provide the first level of operational time saving. The second level is added during the event of an outage. When you remove a troubled switch from an existing stack of switches and replace it with another switch, the master switch will recognize this as a maintenance outage and automatically reload the port-level configuration that was on the previous switch without user intervention. This allows IT managers to have local personnel in remote locations perform maintenance tasks instead of sending costly technicians out for a few minutes of work, thus saving thousands of dollars in operational costs.

    Mix-and-Match Switch Types: Pay as You Expand Your Network

    Stacks can be created with any combination of Cisco Catalyst 3750 and Cisco Catalyst 3750-E switches. Customers who need a mixture of 10/100 and 10/100/1000 ports, PoE, and wiring-closet aggregation capability can incrementally develop the access environment, paying only for what they need. When uplink capacity needs to be increased, you can easily upgrade your bandwidth by adding a 10 Gigabit Ethernet version to the stack and upgrade your Gigabit Ethernet links with 10 Gigabit Ethernet on the existing fiber.

    Integrated Wireless LAN Controller

    The Cisco Catalyst 3750G Integrated Wireless LAN Controller integrates wireless LAN controller functions into the Cisco Catalyst 3750G Series Switches and delivers improved operating efficiency and WLAN security, mobility, and ease of use for business-critical wireless LANs. The Cisco Catalyst 3750G Integrated Wireless LAN Controller delivers centralized security policies, wireless intrusion prevention system (IPS) capabilities, award-winning RF management, QoS, and Layer 3 fast secure roaming for WLANs. As a core component of the Cisco Unified Wireless Network, the Cisco Catalyst 3750G Integrated Wireless LAN Controller provides the control, security, redundancy, and reliability that network managers need to scale and manage their wireless networks as easily as they scale and manage their traditional wired networks.

    Availability: Uninterrupted Performance at Layer 2 and Layer 3

    The Cisco Catalyst 3750 Series Switches increases availability for stackable switches. Each switch can operate as both a master controller and a forwarding processor. Each switch in the stack can serve as a master, creating a 1:N availability scheme for network control. In the unlikely event of a single unit failure, all other units continue to forward traffic and maintain operation.

    Smart Multicast: A New Level of Efficiency for Converged Networks

    With Cisco StackWise technology, the Cisco Catalyst 3750 Series Switches offers greater efficiency for multicast applications such as video. Each data packet is put onto the backplane only once, which provides more effective support for more data streams.

    Superior Quality of Service Across the Stack and at Wire Speed

    The Cisco Catalyst 3750-E and 3750 Series offer Gigabit and 10 Gigabit Ethernet speed with intelligent services that keep everything flowing smoothly, even at 10 times the normal network speed. Mechanisms for marking, classification, and scheduling deliver best-in-class performance for data, voice, and video traffic, all at wire speed.

    IPv6 Support

    The Cisco Catalyst 3750 Series Switches supports IPv6 routing in hardware for maximum performance. As network devices grow and the need for larger addressing and higher security becomes critical, the Cisco Catalyst 3750 Series will be ready to meet the requirement.

    Cisco 3750 Series Switches


  • 32-Gbps switching fabric
  • Stack-forwarding rate of 38.7 mpps for 64-byte packets
  • Forwarding rate: 6.5 mpps (Cisco Catalyst 3750-24TS, 3750-24FS, and 3750-24PS), 13.1 mpps (Cisco Catalyst 3750-48TS and 3750-48PS), 17.8 mpps (Cisco Catalyst 3750G-12S), 35.7 mpps (Cisco Catalyst 3750G-24T), 38.7 mpps (Cisco Catalyst 3750G-24TS and 3750G-24WS), 35.7 mpps (Cisco Catalyst 3750G-16TD), 38.7 mpps (Cisco Catalyst 3750G-24TS-1U), 38.7 mpps (Cisco Catalyst 3750G-24PS), 38.7 mpps (Cisco Catalyst 3750G-48TS), 38.7 mpps (Cisco Catalyst 3750G-48PS)
  • 128 MB DRAM and 16 MB Flash memory (Cisco Catalyst 3750G-24TS, 3750G-24WS, 3750G-24T, 3750G-12S, 3750-24TS, 3750-24PS, 3750-48TS, 3750-48PS, and 3750G-16TD)
  • 128 MB DRAM and 32 MB Flash memory (Cisco Catalyst 3750G-24TS-1U, 3750G-24WS, 3750G-24PS, 3750G-48TS, 3750G-48PS, and 3750-24FS)
  • Configurable up to 12,000 MAC addresses (Cisco Catalyst 3750G-24TS, 3750G-24WS, 3750G-24T, 3750G-12S, 3750-24TS, 3750-24FS, 3750-24PS, 3750-48TS, 3750-48PS, 3750G-24TS-1U, 3750G-24PS, 3750G-48TS, 3750G-48PS, and 3750G-16TD)
  • Configurable up to 20,000 unicast routes (Cisco Catalyst 3750G-12S) and up to 11,000 unicast routes (Catalyst 3750G-24TS, 3750G-24WS, 3750G-24T, 3750-24TS, 3750-24FS, 3750-24PS, 3750-48TS, 3750-48PS, 3750G-24TS-1U, 3750G-24PS, 3750G-48TS, 3750G-48PS, and 3750G-16TD)
  • Configurable up to 1000 IGMP groups and multicast routes (Cisco Catalyst 3750G-24TS, 3750G-24WS, 3750G-24T, 3750G-12S, 3750-24TS, 3750-24FS, 3750-24PS, 3750-48TS, 3750-48PS, 3750G-24TS-1U, 3750G-24PS, 3750G-48TS, 3750G-48PS, and 3750G-16TD)
  • Configurable maximum transmission unit (MTU) of up to 9000 bytes, with a maximum Ethernet frame size of 9018 bytes (jumbo frames) for bridging on Gigabit Ethernet ports, and up to 1546 bytes for bridging and routing on Fast Ethernet ports
  • Connectors and Cabling
  • 10BASE-T ports: RJ-45 connectors, 2-pair Category 3 (Cat-3), 4, or 5 unshielded twisted-pair (UTP) cabling
  • 100BASE-TX ports: RJ-45 connectors, 2-pair Cat-5 UTP cabling
  • 100BASE-FX ports: MT-RJ connectors, 50/125 or 62.5/125 micron multimode fiber
  • 1000BASE-T ports: RJ-45 connectors, 2-pair Cat-5 UTP cabling
  • 1000BASE-T SFP-based ports: RJ-45 connectors, 2-pair Cat-5 UTP cabling
  • 1000BASE-SX, -LX/LH, -ZX, and CWDM SFP-based ports: LC fiber connectors (single-mode, or multimode fiber)
  • 10GBASE-ER XENPAK-based port (single-mode)
  • 10GBASE-LR XENPAK-based port (single-mode)
  • Cisco StackWise stacking ports: copper-based Cisco StackWise cabling that is also compatible with the StackWise Plus technology in the Cisco Catalyst 3750-E Series Switches.
  • Management console port: RJ-45-to-DB9 cable for PC connections
  • Power Connectors
  • Customers can provide power to a switch by using either the internal power supply or a redundant power system (Cisco RPS 2300 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 autoranging unit.
  • The internal power supply supports input voltages between 100 and 240VAC.
  • Use the supplied 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 2300 or RPS 675 that uses AC input and supplies DC output to the switch.
  • 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 2300 (model PWR-RPS2300) or the Cisco RPS 675 (PWR675-AC-RPS-N1=) should be attached to the redundant-power-supply receptacle.
  • Indicators
  • Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications
  • System-status LEDs: system, RPS, and bandwidth-utilization indications
  • Environmental Ranges
  • Operating temperature: 32 to 113°F (0 to 45°C)
  • Storage temperature: -13 to 158°F (-25 to 70°C)
  • Operating relative humidity: 10 to 85% (noncondensing)
  • Operating altitude: up to 10,000 ft (3049 m)
  • Storage altitude: up to 15,000 ft (4573 m)
  • Acoustic Noise
  • International Organization for Standardization (ISO) 7779: bystander position operating to an ambient temperature of 30°C
  • Non-PoE Models
  • Cisco Catalyst 3750G-24TS: 42 dB
  • Cisco Catalyst 3750G-24WS: 42 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
  • Cisco Catalyst 3750-24FS: 38 dB
  • Cisco Catalyst 3750G-16TD: 42 dB
  • Cisco Catalyst 3750G-48TS: 48 dB
  • Cisco Catalyst 3750G-24TS-1U: 42 dB
  • PoE Models (Levels Increase with Amount of Active PoE ports)
  • Cisco Catalyst 3750-48PS: 42-48 dB
  • Cisco Catalyst 3750-24PS: 38-42 dB
  • Cisco Catalyst 3750G-48PS: 52-58 dB
  • Cisco Catalyst 3750G-24PS: 38-44 dB
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