Catalyst 1900, 2820, and 3000 Quick Sheet

Copyright © 1999 Boson Software

Written by john@boson.com

1900 – Basic Properties

2 100BaseTX ports

1024 addresses

LED is Green during normal Operation

The 232 console connector is on the rear panel of the catalyst switch

Good for creating several workgroups with 10Mbps clients and 100Mbps servers

2820 – Basic Properties

24 10BaseT ports

Expansion Slot LED green/off is running POST

FDDI Modules: Fiber DAS, Fiber SAS, UTP SAS

100Base TX Module =one switched or eight shared 100-Mbps ports

Four VLANs

Tidbits:

If destination address on same port as source address packet is filtered

If you are experience FCS or Alignment errors switch to Store-and-Forward.

Secure Port = 132 addresses

To double performance of 100Mbps server use FULL-DUPLEX

Source Port Filtering restricts what addresses on what ports

Configuration of Catalyst 1900 and 2820

Menus:

Menu	Purpose
Main Menu	Network Management
System Config Menu	Switching mode options
Network Mgmt Menu	IP configuration
SNMP Config Menu	Read and write community strings
Multi-cast Registration menu	Register a Multicast address

In-band mgmt requires an IP Address

Out-of-band mgmt = console port

Port monitor enables you to route a copy of incoming and outgoing port traffic to a monitor port for analysis.

Changes on 1900: take effect immediately, might not be permament for 30 sec, when an IP address is changes must reset the switch

Catalyst 3000 Switches

Basic Properties
Input Buffer Per High-Speed Port	256KB
total buffer space for temp packet storage between communicating ports	512KB
Max Switched Ports	24
Max Mac Addresses with 4MB memory	6000
Max Mac Addresses stack of 8 cat 3000’s	6000
Max switched ports at 10-Mbps is stact of 8 cat 3000’s	192
Max bandwidth of Stackport Module	280 Mbps

1 port on WS-X3002 100BaseT modules

4 UTP 100VG AnyLAN port is MAX on Cat 3000

1 Meter is Max Length of SCSI-2 cable for Cat 3000’s

Catalyst Matrix = 8 SCSI-2 Ports

Configuration Catalyst 3000 Switches

Switch Info Screen = set port duplex mode

Auto Switch Mode allows to switch between cut-through and store-and-forward

There are 4 filter types

VLAN Admin Config Screen -> Exam details of a Domain and make changes

The full/half duplex dip switches are over-ridden if set to software control

Troubleshooting 1900 and 2820

Port stat LED flash GREEN/OFF = device is communicating with switch

Possible cause of FCS and Alignment Errors = switch port at Full , attached device at Half-duplex

Turning of Cat switch during upgrade could corrupt firmware

CAT 2820 firmware upgrade not effect FDDI module firmware

Upgrade firmware via : tftp client, tftp server, serial connection (X-modem)

Cross over cable = when transceiver is used or hub marked with an ‘X’

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