Cisco CATALYST 1924 ENTERPRISE SWITCH Specification Guide
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Catalyst 1900 Series
Product Overview
The Catalyst(r) 1900 series switches deliver the industry’s best value for today’s Ethernet networks. For an extremely low
price per port, these switches provide a dedicated 10-Mbps of bandwidth to the desktop and high performance connectivity
between hub-based workgroups.
price per port, these switches provide a dedicated 10-Mbps of bandwidth to the desktop and high performance connectivity
between hub-based workgroups.
All Catalyst 1900 series switches offer unrivaled ease of use through an intuitive and comprehensive Web-based management
interface. Standard Edition switches are upgradeable to provide unmatched flexibility and scalability when combined with
Enterprise Edition software. Enterprise Edition software enables these switches to deliver unmatched network configuration
flexibility and scalability through embedded Cisco technologies, delivering comprehensive management and security,
bandwidth optimization, networked multimedia, and virtual LAN (VLAN) support. The Enterprise Edition software is pre-
installed in Enterprise Edition switches, and available as an Upgrade Kit for Standard Edition switches.
interface. Standard Edition switches are upgradeable to provide unmatched flexibility and scalability when combined with
Enterprise Edition software. Enterprise Edition software enables these switches to deliver unmatched network configuration
flexibility and scalability through embedded Cisco technologies, delivering comprehensive management and security,
bandwidth optimization, networked multimedia, and virtual LAN (VLAN) support. The Enterprise Edition software is pre-
installed in Enterprise Edition switches, and available as an Upgrade Kit for Standard Edition switches.
Key Features and Benefits
Standard Edition Feature Summary
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Software upgradeable to Enterprise Edition
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4 models with 12 or 24 10BaseT ports and choice of 2 100BaseT uplinks
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Full-duplex operation on all Ethernet and Fast Ethernet ports
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Auto-negotiation on 100BaseTX ports for automatically selecting half-and full-duplex operation
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Congestion control features including IEEE 802.3x-based flow control, and back-pressure based flow control on 10BaseT
ports
ports
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Web-based network management
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Reduced footprint: only 8.25 inches deep
Performance
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Twelve or twenty-four 10BaseT ports deliver dedicated 10 Mbps of bandwidth to individual users or workgroups to
support bandwidth-intensive applications
support bandwidth-intensive applications
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Two 100BaseT ports eliminate bottlenecks to servers and other network devices
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One switched Attachment Unit Interface (AUI) port for connecting to fiber or legacy 10Base2 or 10Base5 networks
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Shared-memory architecture with 3-MB packet buffer virtually eliminates packet loss
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Non-blocking, ClearChannel architecture supports wire-speed bridging on all ports, delivering up to 370 Mbps maximum
forwarding bandwidth, and 550,000 pps aggregate
forwarding bandwidth, and 550,000 pps aggregate
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CollisionFree full-duplex operation on switched 10BaseT and 100BaseT ports delivers up to 200 Mbps of bandwidth to
end stations, servers and between switches
end stations, servers and between switches
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Choice of congestion control options for applications that require zero packet loss:
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Enhanced congestion control accelerates packet forwarding when the switch buffers are full
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Back-pressure on half-duplex Ethernet ports throttles network transmission using the IEEE 802.3 Layer 2 back-off
algorithm
algorithm
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IEEE 802.3x flow control on 100BaseTX ports provides intelligent flow management between switches and between a
switch and a server
switch and a server
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Per-port broadcast storm control prevents faulty end stations from degrading overall system performance with broadcast
storms
storms
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Choice of cut-through or store-and-forward switching lets administrators optimize for performance or error checking