Data Sheet
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Power over Ethernet
The Cisco Catalyst 3750-E Series can provide a lower total cost of ownership for deployments that incorporate Cisco
IP phones, Cisco Aironet
®
wireless LAN (WLAN) access points, or any IEEE 802.3af-compliant end device. PoE
removes the need for wall power to each PoE-enabled device and eliminates the cost for additional electrical cabling
and circuits that would otherwise be necessary in IP phone and WLAN deployments. The Cisco Catalyst 3750-E 24-
port PoE configurations can support 24 simultaneous full-powered PoE ports at 15.4W for full powered-device
support. The Cisco Catalyst 3750-E 48-port PoE configurations can support 48 simultaneous full-powered PoE ports
at 15.4W when using the optional 1150W power supply. Alternatively, for deployments that do not need full PoE on
all ports, a smaller power supply can be used in conjunction with Cisco Catalyst Intelligent Power Management to
support 24-port and 48-port PoE configurations.
In addition, Cisco Catalyst Intelligent Power Management supports Enhanced PoE where up to 20W of PoE can be
delivered to each port. This capability enables support of PoE devices such as 802.11n wireless equipment where
>15.4W of PoE is required.
Redundant Power System
The Cisco Catalyst 3750-E Series Switches support the new generation of Redundant Power Supply (RPS) 2300.
The RPS 2300 increases availability in a converged data, voice, and video network by providing transparent power
backup to two of six attached Cisco Catalyst 3750-E Series Switches at the same time. The failed power supply can
be swapped out while the switch is being powered up by the RPS 2300.
Primary Features and Benefits
Ease of Use: Deployment
A working stack is self-managing and self-configuring. When switches are added or removed, the master switch
automatically loads the Cisco IOS Software version 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-E Series stacks up to nine switches as a single logical unit for a total of 468 Ethernet
10/100/1000 ports, 432 PoE 10/100/1000 ports, or 18 10 Gigabit Ethernet ports. Individual 10/100/1000 units can be
joined in any combination to evolve with network needs.
Other ease of use features include but are not limited to:
●
Smartports enable fast and easy configuration of Cisco recommended best practice security and QoS
features, encapsulating years of Cisco networking expertise.
●
Dynamic Host Configuration Protocol (DHCP) autoconfiguration of multiple switches through a boot server
eases switch deployment.
●
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. Automatic software version checking and updating help
ensure that all stack members have the same software version.
●
Autonegotiation 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.