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, visit http://www.cisco.com/go/sa.
Investment Protection
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.
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.
(27 pagine)
(73 pagine)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commenti su questo manuale