Catalyst 2820

Product Overview

The Catalyst 2820 is an Ethernet switch that provides high-speed configuration flexibility for workgroup applications. With 25 switched Ethernet ports for individual workstations and 10BaseT hubs and two high-speed expansion slots for servers and backbones, the Catalyst 2820 provides Ethernet switching to 100BaseT, Fiber Distributed Data Interface (FDDI), and future Asynchronous Transfer Mode (ATM) networks.

Figure 127 : Catalyst 2820 Front View

Figure 128 : Catalyst 2820 Rear View

Table 257 : Catalyst 2820 Summary of Features

Characteristic	Description
Reliability	50,000 hours MTBF
Weight	13 lbs (5.90 kg)
Dimensions (H x W x D)	3.43 x 17.5 x 12.4" (8.76 x 44.45 x 31.5 cm)

Table 258 : Catalyst 2820 Environmental Specifications

Characteristic	Description
Operating temperature	32--104°F (0--40°C)
Operating humidity	10% to 90%
Operating altitude	Up to 10,000 feet
Power consumption	100 watts
Input voltage	90 to 250 volts, 50 to 60 Hz

Standard Features

The Catalyst 2820 includes the following features:

• 25 switched Ethernet ports: 24 10BaseT and one AUI.
  

The 10BaseT ports use RJ-45 connectors to connect to single workstations, 10BaseT hubs, or any 10BaseT compatible device. The attached devices use standard 10BaseT adapters and wiring. Port 25, located on the back panel, supports an alternative AUI connection for attachment to a thick coaxial, thin coaxial, or a fiber-optic media transceiver.

• Two high-speed expansion slots supporting 100BaseT, FDDI, and future ATM modules.
  

The high-speed expansion slots are compatible with Catalyst 2820 field-pluggable modules and provide high-bandwidth connections to backbones, servers, and other high-performance devices. Each expansion slot is internally switched to all other Catalyst 2820 ports.

• Multiple MAC address support for a 2048- or, optionally, 8192-address cache shared among all 27 ports.
  

• CollisionFree operation for full-duplex 100BaseT, providing up to 200-Mbps bandwidth and extended distances using fiber cabling.
  

• CiscoView device-management support.
  

• IEEE 802.1d Spanning-Tree Protocol.
  

• Up to 320-Mbps maximum forwarding bandwidth and 450,000 packets per second (pps) aggregate packet-forwarding rate.
  

• Shared memory architecture with 3-Mb packet buffer.
  

• Supporting connection to a redundant power supply.
  

• Telnet and SNMP support for in-band management and a menu-driven out-of-band management console.
  

• Up to four port-configurable virtual LANs (VLANs).
  

• Multicast address registration and packet filtering.
  

• Port security to prevent unauthorized access to the network.
  

• Flooding controls.
  

• Broadcast storm control.
  

Catalyst 2820 Modules

The field-installable modules for the Catalyst 2820 Ethernet switch provide a choice of 100BaseT Fast Ethernet or FDDI connections supporting Category 5 UTP and fiber-optic cabling. These modules, which can be used in any combination, provide high-speed configuration, wiring, and backbone flexibility. Table 259 lists the Catalyst 2820 100BaseT and FDDI module options.

Table 259 : Catalyst 2820 100BaseT and FDDI Module Options

Module	Description	Cable Type
100BaseTX	1-port UTP 8-port UTP	Category 5
100BaseFX	1-port fiber 4-port fiber	Multimode fiber
FDDI fiber	1-port DAS 1-port SAS	Multimode fiber
FDDI UTP (CDDI)	1-port SAS	Category 5

The 100BaseT and FDDI modules plug directly into the high-speed expansion slots on the Catalyst 2820 switch. These modules are field-installable, providing you with the flexibility to change your network configuration while preserving your investment in the base switch. The hot-swappable design lets you install new modules while the switch is operational, minimizing network downtime.

Configuring and Managing a Catalyst 2820

You can configure and manage a Catalyst 2820 using any SNMPcompatible management station, or you can connect an ASCII terminal to the switch via the EIA/TIA-232 port and use the management console. The management console is also accessible via Telnet. SMT-compatible workstations can support installed Catalyst 2820 FDDI modules.

Using the Management Console

The management console provides a menu-driven interface for configuring and monitoring your network. The application is password-protected and locks out a user who fails to enter the password within a definable number of attempts. In such a case, the network administrator can be alerted via in-band management. Most of the statistics and information generated by the switch are available through the management console. You can continue to use it even when the network is down.

SNMP Management

The Catalyst 2820 is fully manageable by any SNMP-compatible management station. The product supports all pertinent SNMP MIB II variables, the 802.1d bridge MIB, and a comprehensive set of MIB extensions designed for maximum support of the switch's hub and switching capabilities. The Catalyst 2820 also supports the FDDI MIB and the MIB supporting Catalyst 2820 modules.

Supported Network Management Platforms

The Catalyst 2820 SNMP MIBs are supplied in ASCII format for compiling into any SNMP network management system using a general MIB browser. You can display switch information from the following network management platforms.

• Castle Rock SNMP c
  

• Novell NMS
  

• HP OpenView
  

• SunNet Manager
  

CiscoView

You can use the CiscoView graphical user interface to configure your Catalyst 2820 switches and to generate the same statistics available through the management console.

Product Numbers

Table 260 lists the product numbers you can use to order the Catalyst 2820 switch.

Table 260 : Catalyst 2820 Product Numbers

Description	Product Numbers
Catalyst 2820 (with 2K cache)	WS-C2822
Catlyst 2820 (with 8K cache)	WS-C2828
1-port 100BaseTX (switched) module	WS-X2811
8-port 100BaseTX (shared) module	WS-X2818
1-port 100BaseFX (switched) module	WS-X2821
4-port 100BaseFX (shared) module	WS-X2824
FDDI UTP SAS (CDDI) module	WS-X2831
FDDI fiber SAS module	WS-X2841
FDDI fiber DAS module	WS-X2841
SMARTnet mainenance contract	CON-SNT-WS-C282X

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