The Cisco® Catalyst® 3750 Series Switches (Figures 1 through 4) are innovative switches that improve LAN operating efficiency by combining industry-leading ease of use and high resiliency for stackable switches. This product series features Cisco StackWise™ technology, a 32-Gbps stack interconnect that allows customers to build a unified, highly resilient switching system, one switch at a time.

Configurations

The Cisco Catalyst 3750 Series includes the following configurations:

● Cisco Catalyst 3750G-24TS-24 Ethernet 10/100/1000 ports and four Small Form-Factor Pluggable (SFP) uplinks

● Cisco Catalyst 3750G-24T-24 Ethernet 10/100/1000 ports

● Cisco Catalyst 3750G-12S-12 Gigabit Ethernet SFP ports

● Cisco Catalyst 3750-48TS-48 Ethernet 10/100 ports and four SFP uplinks

● Cisco Catalyst 3750-24TS-24 Ethernet 10/100 ports and two SFP uplinks

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

● Cisco Catalyst 3750-24PS-24 Ethernet 10/100 ports with IEEE 802.3af and Cisco prestandard PoE and two SFP uplinks

● Cisco Catalyst 3750-24FS-24 100BASE-FX Ethernet ports and two SFP uplinks

● Cisco Catalyst 3750G-24TS-1U-24 Ethernet 10/100/1000 ports and four SFP uplinks, 1-rack unit (RU) height

● Cisco Catalyst 3750G-24PS-24 Ethernet 10/100/1000 ports with IEEE 802.3af and Cisco prestandard PoE and four SFP uplinks

● Cisco Catalyst 3750G-48TS-48 Ethernet 10/100/1000 ports and four SFP uplinks

● Cisco Catalyst 3750G-48PS-48 Ethernet 10/100/1000 ports with IEEE 802.3af and Cisco prestandard PoE and four SFP uplinks

● Cisco Catalyst 3750G-24WS-24 Ethernet 10/100/1000 ports with IEEE 802.3af, Cisco prestandard PoE and two SFP uplinks and an integrated wireless LAN controller

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.

Ease of Use and Deployment

• Autoconfiguration of new stack units eliminates reconfiguration.

• Dynamic Host Configuration Protocol (DHCP) autoconfiguration of multiple switches through a boot server eases switch deployment.

• Automatic Cisco IOS Software version checking and updating help ensure that all stack members have the same software version.

• Automatic QoS (AutoQoS) simplifies QoS configuration in voice over IP (VoIP) networks by issuing interface and global switch commands to detect Cisco IP phones, classify traffic, and help enable egress queue configuration.

• Master configuration management helps ensure that all switches are automatically upgraded when the master switch receives a new software version.

• Autosensing on each non-SFP port detects the speed of the attached device and automatically configures the port for 10-, 100-, or 1000-Mbps operation, easing switch deployment in mixed 10, 100, and 1000BASE-T environments.

• Autonegotiating on all ports automatically selects half- or full-duplex transmission mode to optimize bandwidth.

• Dynamic Trunking Protocol (DTP) facilitates dynamic trunk configuration across all switch ports.

• Port Aggregation Protocol (PAgP) automates the creation of Cisco Fast EtherChannel ® groups or Gigabit EtherChannel groups to link to another switch, router, or server.

• Link Aggregation Control Protocol (LACP) allows the creation of Ethernet channeling with devices that conform to IEEE 802.3ad. This feature is similar to Cisco EtherChannel technology and PAgP.

• DHCP Relay allows a DHCP relay agent to broadcast DHCP requests to the network DHCP server.

• IEEE 802.3z-compliant 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, 1000BASE-T, and CWDM physical-interface support through a field-replaceable SFP module provides unprecedented flexibility in switch deployment.

• There is a default configuration to help ensure that the switch can be quickly connected to the network and can pass traffic with minimal user intervention. This default configuration exists even if there is no configuration stored in Flash memory.

• Automatic media-dependent interface crossover (MDIX) automatically adjusts transmit and receive pairs if an incorrect cable type (crossover or straight-through) is installed.

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