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© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
master switch maintains a single configuration file for the stack and automatically provisions and
updates the software image for new switches added to a stack, enabling plug-and-play hardware
replacement. The Cisco Catalyst 2975 Switch stack supports a single IP address, which is
maintained even when a new stack master is elected. Also a Cisco Catalyst 2975 Switch stack
appears as a single spanning-tree node to the rest of the network, and all stack members use the
same bridge-id, which simplifies spanning-tree convergence and troubleshooting.
Power over Ethernet
The Cisco Catalyst 2975 Switch provides PoE to allow easy connectivity to Ethernet-powered
devices, including Cisco IP phones and wireless access points. Cisco Catalyst 2975 PoE models
comply with Cisco prestandard PoE and IEEE 802.3af. PoE removes the need for wall power to
each PoE-enabled device and eliminates the cost for additional electrical cable and circuits that
would otherwise be necessary in IP phone and WLAN deployments. PoE switches also eliminate
the need for power injectors and PoE midspans for powering IP devices. The Cisco Catalyst 2975
Switch has a 370W PoE power budget so can support 24 simultaneous full-powered PoE port at
15.4W.
Gigabit Ethernet
At speeds of 1000 Mbps, Gigabit Ethernet provides the bandwidth to meet new and evolving
network demands, alleviate bottlenecks, and boost performance while increasing the return on
existing infrastructure investments. Today's workers are placing higher demands on networks,
running multiple concurrent applications. For example, a worker joins a team conference call
through an IP videoconference, sends a 10-MB spreadsheet to meeting participants, broadcasts
the latest marketing video for the team to evaluate, and queries the customer relationship
management (CRM) database for the latest real-time feedback. Meanwhile, a multigigabyte
system backup starts in the background, and the latest virus updates are delivered to the client.
Redundant Power System
The Cisco Catalyst 2975 Switches support the new generation of the Cisco Redundant Power
System (RPS) 2300, which increases availability in a converged data, voice, and video network by
providing transparent power backup to two of six attached switches at the same time.
Intelligence in the Network
Networks of today are evolving to address four new developments at the network edge:
Increase in desktop computing power
●
Introduction of bandwidth-intensive applications
●
Expansion of highly sensitive data on the network
●
Presence of multiple device types, such as IP phones, WLAN access points, and IP video
●
cameras
These new demands contend for resources with existing mission-critical applications. As a result,
IT professionals must view the edge of the network as critical to effectively manage the delivery of
information and applications.
As companies increasingly rely on networks as their strategic business infrastructure, it is more
important than ever to help ensure their high availability, security, scalability, and control. By
adding Cisco intelligent functions for LAN access, you can now deploy networkwide intelligent
Data Sheet
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