Table of Contents

Product Overview
Key Features and Benefits

Standard Edition Feature Summary
Performance
Security and Redundancy
Scalability
Flexible Network Configuration
Management

Specifications
Ordering Information

Ordering Information
Services and Support

Catalyst 2820 Series — Modular Ethernet Switches

Product Overview

The modular Catalyst 2820 series switches are the ideal solution for Ethernet workgroups and individual users who need increased performance at a surprisingly affordable price, and 100BaseT, Fiber Distributed Data Interface (FDDI), or Asynchronous Transfer Mode (ATM) connectivity to servers and network backbones.

A Catalyst 2820 series Standard Edition switch is an effective backbone in a small/medium business network, aggregating 10BaseT hubs and network resources, or used at the workgroup level in a large network for dedicated, high speed connections from individual desktops to servers and other network devices.

All Catalyst 2820 series switches offer unrivaled ease of use through an intuitive and comprehensive Web-based management interface. Standard Edition switches are upgradable to provide unmatched flexibility and scalability when combined with Enterprise Edition software. Enterprise Edition software enables these switches to deliver comprehensive management and security, bandwidth optimization, networked multimedia, and virtual LAN (VLAN) support.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

• Software upgradable to Enterprise Edition

• 4 models with 24 10BaseT ports, two slots, and choice of 2K or 8K MAC address cache

• Choice of 11 high-speed modules support 100BaseT, FDDI, and ATM

• Full-duplex operation on all ports

• Web-based network interface enables configuration and management form any client on the internet with a web-browser.

• Congestion control features including IEEE 802.3x-based flow control, and back-pressure based flow control on 10BaseT ports

Performance

• Twelve or twenty-four 10BaseT ports deliver dedicated 10 Mbps of bandwidth to individual users or workgroups to support bandwidth-intensive applications

• Two high-speed expansion slots maximize high-speed configuration and backbone flexibility

• One switched Attachment Unit Interface (AUI) port for connecting to fiber or legacy 10Base2 or 10Base5 networks

• Shared-memory architecture with 3 MB packet buffer virtually eliminates packet loss

• Non-blocking, ClearChannel architecture supports wire-speed bridging on all ports, delivering up to 370 Mbps maximum forwarding bandwidth, and 550,000 pps aggregate

• CollisionFree full-duplex operation on switched 10BaseT and 100BaseT ports delivers up to 200 Mbps of bandwidth tend stations, servers and between switches

• Choice of congestion control options for applications that require zero packet loss:

• Enhanced congestion control accelerates packet forwarding when the switch buffers are full

• Back-pressure on half-duplex Ethernet ports throttles network transmission using the IEEE 802.3 Layer 2 back-off algorithm

• IEEE 802.3x flow control on 100BaseTX ports provides intelligent flow management between switches and between a switch and a server

• Per-port broadcast storm control prevents faulty end stations from degrading overall system performance with broadcast storms

• Choice of cut-through or store-and-forward switching lets administrators optimize for performance or error checking

Security and Redundancy

• IEEE 802.1d Spanning-Tree Protocol support for redundant backbone connections and loop-free networks simplifies network configuration and improves fault tolerance

• TACACS+ enables designation of a separate access server for authentication, authorization, and accounting (Enterprise Edition only)

• User-selectable address learning mode simplifies configuration and enhances security

• Resilient link support for faster recovery from network failures

Scalability

• Fast EtherChannel provides up to 400 Mbps of bandwidth to switches, routers, and servers by enabling parallel bandwidth links between switches (with Enterprise Edition software).

• Cisco Group Management Protocol (CGMP) enables a switch to selectively and dynamically filter and forward routed IP multicasts to targeted multimedia end stations, optimizing bandwidth for applications such as Intranet, video-conferencing and IPTV.

• Overlapping bridge groups control broadcasts within the switch to manage bandwidth and provide added security.

• Broadcast control for end stations with up to 1024 administrator-defined, port-based VLANs. VLANs can be distributed across multiple switches with Cisco`s dynamic Inter-Switch Link (ISL) trunking on 100BaseT ports (with Enterprise Edition software).

• Support for optional Cisco 600 watt redundant AC power system provides a backup power source for up to four units for improved fault tolerance and network uptime.

Flexible Network Configuration

• No per-port Media Access Control (MAC) address limitations — provides flexibility to connect to individual users or shared hubs. Support for 1024 MAC addresses on Catalyst 1900 and up to 8192 addresses on Catalyst 2820. Allows switch to scale with a growing network

• Configurable network port that supports unlimited MAC addresses for backbone connectivity

Management

• Web-based secured interface allows user to configure and manage the switch from any client on the internet with a web-browser

• Simple Network Management Protocol (SNMP) and Telnet support delivers comprehensive in-band manageability, and a menu-based management console provides out-of-band manageability

• Supports four groups of embedded RMON (history, statistics, alarms, and events). Support for all nine RMON groups through use of a SwitchProbe Analyzer port that permits traffic monitoring of a single port, a group of ports, or the entire switch from a single network analyzer or RMON probe. (Enterprise Edition only)

• Cisco Discovery Protocol (CDP) enables a CiscoWorks network management station to automatically discover the switch in a network topology

• Autonegotiation on 100BaseTX ports automatically selects half- or full-duplex transmission mode to optimize bandwidth

• Domain Name Service (DNS) eases network administration by enabling logical name assignments. Network Administrators can specify an end system or Catalyst 1900/2820 by name, rather than address.

• Dynamic Host Configuration Protocol (DHCP) support eases network administration by automatically requesting an IP address from any network DHCP server.

Figure 20-18: Catalyst 2820 Series Rear View

Specifications

1. Modules ST connectors

For information about the Enterprise Edition Software, see "Enterprise Edition Software for the Catalyst 2820 and 1900 Series" section on page 15.

Ordering Information

Ordering Information

All base units include 1 year limited return to factory warranty. Support for the Catalyst 2820 module is included with base unit service.

Services and Support

All Catalyst 2820 series switches come with a one year limited return to factory warranty that can be extended for a total of three years. SMARTnet and Comprehensive Support Packages are both available. Support options range from help desk assistance to proactive, onsite consultation. All support contracts include major Cisco IOS software updates, full access rights to Cisco Connection Online, and 24-hour-a-day technical assistance. Contact your local sales office for further information.

Posted: Wed Sep 27 05:15:19 PDT 2000
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