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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