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  »  Cisco Switches  »  Cisco Catalyst 3750-48PS Switch (Cisco 3750-48-PS-S)

Cisco Catalyst 3750-48PS-48 Ethernet 10/100 ports with IEEE 802.3af and Cisco prestandard Power over Ethernet (PoE) and four SFP uplinks

Manufacturer: Cisco
Product name: Cisco Catalyst 3750-48PS Switch
More Info: External link

Primary Features and Benefits

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 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.

Availability: Uninterrupted Performance at Layer 2 and Layer 3
The Cisco Catalyst 3750 Series 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 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.

Network Security: Granular Control for the Access Environment
The Cisco Catalyst 3750 Series supports a comprehensive set of security features for connectivity and access control, including ACLs, authentication, port-level security, and identity-based network services with 802.1x and extensions. This set of comprehensive features not only helps prevent external attacks, but also defends the network against “man-in-the-middle” attacks, a primary concern in today’s business environment.

Single IP Management: Many Switches, One Address

Each Cisco Catalyst 3750 Series stack is managed as a single object and has a single IP address. Single IP management is supported for activities such as fault detection, VLAN creation and modification, network security, and QoS controls.

Jumbo Frames: Support for High-Demand Applications
The Cisco Catalyst 3750 Series supports jumbo frames on the 10/100/1000 configurations for advanced data and video applications requiring very large frames. All Cisco Catalyst 3750-E Series switch models also support jumbo frames.

IPv6 Support
The Cisco Catalyst 3750 Series 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.

Product Specifications

●  32-Gbps switching fabric
●  Stack-forwarding rate of 38.7 mpps for 64-byte packets
●  Forwarding rate: 13.1 mpps
●  128 MB DRAM and 16 MB Flash memory
●  Configurable up to 12,000 MAC addresses
●  Configurable up to 11,000 unicast routes
●  Configurable up to 1000 IGMP groups and multicast routes
●  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.

●  Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications
●  System-status LEDs: system, RPS, and bandwidth-utilization indications

●  1.73 x 17.5 x 14.8 in. (4.4 x 44.5 x 37.8 cm) (Cisco Catalyst 3750-48PS)
●  13.2 lb (6.0 kg) (Cisco Catalyst 3750-48PS)

Environmental Ranges
●  Operating temperature: 32 to 113ºF (0 to 45ºC)
●  Storage temperature: -13 to 158ºF (-25 to 70ºC)
●  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)