Cisco Catalyst 3750-E Software
Cisco Catalyst 3750-E Series is available with either the IP Base or the IP Services feature set.
The IP Base feature set includes advanced quality of service (QoS), a suite of security features,
rate-limiting, access control lists, and basic static and Routing Information Protocol (RIP) routing
capability. The IP Services feature set provides a richer set of enterprise-class features, including
advanced hardware-based IP unicast and multicast routing—Enhanced Interior Gateway Routing
Protocol (EIGRP), Open Shortest Path First (OSPF), Border Gateway Protocol (BGP), Protocol
Independent Multicast (PIM), and IPv6 routing such as OSPFv3 and EIGRPv6.
Customers can transparently upgrade the software feature set in the Cisco Catalyst 3750-E Series
Switches through Cisco IOS®
Software Activation. Software activation authorizes and enables the
Cisco IOS Software feature sets. A special file contained in the switch, called a license file, is
examined by Cisco IOS Software when the switch is powered on. Based on the license’s type,
Cisco IOS Software activates the appropriate feature set. License types can be changed, or
upgraded, to activate a different feature set. For detailed information about Software Activation,
The Cisco Catalyst 3750-E Series Switches are compatible with the Cisco Catalyst 3750 Series
Switches, enabling customers to stack them together and thereby protect existing investment in
the Cisco Catalyst 3750 Series Switches. The Cisco TwinGig Small Form-Factor Pluggable (SFP)
converter module further protects customers’ investment in Cisco Catalyst 3750-E Series Switches
by enabling migration from Gigabit Ethernet to 10 Gigabit Ethernet uplinks, as business needs
require, without having to upgrade the switches.
Cisco StackWise Plus Technology
Cisco StackWise Plus technology is built on the highly successful StackWise™ technology, which
is a premium stacking architecture optimized for Gigabit Ethernet. StackWise technology was
designed to respond to additions, deletions, and redeployment while maintaining constant
performance. The stack behaves as a single switching unit that is managed by a master switch
elected from one of the member switches. The master switch automatically creates and updates all
the switching and optional routing tables. A working stack can accept new members or delete old
ones without service interruption. StackWise creates a highly resilient single unified system of up
to nine switches, providing simplified management using a single IP address, single telnet session,
single command-line interface (CLI), auto-version checking, autoconfiguration, and more.
StackWise Plus supports all the features of StackWise and provides backward compatibility with
the existing Cisco Catalyst 3750 Series Switches while enhancing the throughput of the system up
to 64 Gbps. StackWise Plus also enables local switching in Cisco Catalyst 3750-E Series
Switches. Local switching packets coming into a port in the Cisco Catalyst 3750-E Series Switch
destined for another port in the same switch do not have to traverse through the stack ring, thus
increasing the forwarding capacity of the switch.
Cisco EnergyWise Technology
Cisco EnergyWise is an innovative architecture, added to the Cisco Catalyst 3750-E switches,
promoting companywide sustainability by reducing energy consumption across an entire corporate
infrastructure and affecting more than 50 percent of global greenhouse gas emissions created by
worldwide building infrastructure, a much greater effect than the 2 percent generated by the IT
industry. Cisco EnergyWise enables companies to measure the power consumption of network
infrastructure and network-attached devices and manage power consumption with specific
© 2009 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 3 of 22
policies, reducing power consumption to realize increased cost savings, potentially affecting any
EnergyWise encompasses a highly intelligent network-based approach to communicate messages
that measure and control energy between network devices and endpoints. The network discovers
Cisco EnergyWise manageable devices, monitors their power consumption, and takes action
based on business rules to reduce power consumption. EnergyWise uses a unique domainnaming system to query and summarize information from large sets of devices, making it simpler
than traditional network management capabilities. Cisco EnergyWise’s management interfaces
allow facilities and network management applications to communicate with endpoints and each
other using the network as a unifying fabric. The management interface uses standard SNMP or
SSL to integrate Cisco and third-party management systems.
Cisco EnergyWise extends the network as a platform for power control plane for gathering,
managing, and reducing power consumption of all devices, resulting in companywide optimized
power delivery and reduced energy costs.
10 Gigabit Ethernet Uplinks and the Cisco TwinGig SFP Converter
The Cisco Catalyst 3750-E features wire-speed 10 Gigabit Ethernet uplink ports for high-bandwidth
applications, relieving congestion and ensuring smooth delivery of data. The TwinGig SFP
converter (see Figure 2) converts a 10 Gigabit Ethernet X2 interface into two Gigabit Ethernet SFP
ports. This way, customers can initially use the switch with Gigabit Ethernet uplinks and later
implement 10 Gigabit Ethernet uplinks as business demands change, without having to upgrade
the access layer.
Cisco Catalyst 3750-E Software