Cisco Catalyst 2100 Series Switches

Procedure for Recovering from Grand Junction Time Bug

December 16, 1996

Products Affected

This problem affects only Grand Junction Fastswitch 2802, 2808, and 2100 switches. The problem does not affect the Catalyst and CiscoPro versions of the product.

Any user who actually suffered the date-related failure needs to reset the box to factory defaults (Reset to Factory Defaults) to clear out static addresses that were written during the failure. Resetting the box to factory defaults manually will clear out all static addresses. If this is not done, the user will not be able to add any new static addresses.

Also included in this document is a Temporary Workaround.

Reset to Factory Defaults (Also Reset the Static Address List)

This is achieved through the management console using the serial port on the rear of the unit and an attached terminal, or PC running terminal emulation.

  1. Configure the terminal to communicate at 9600 Baud, using 8 data bits and 1 stop bit, no parity. Follow the instructions in the Administrator's Guide for guidelines on proper cabling.

  2. With the FastSwitch operating, the Grand Junction banner and prompt should be seen on the terminal or PC. Press any key to bring up the Main Menu.

  3. Select "S" to move to the System Menu.

  4. Type "F" to Reset to Factory Defaults.

  5. Respond "Y", Yes, to the prompt. The system will reset with default values for all system parameters.

  6. Again enter the Management Console as in #2, and configure your FastSwitch as needed. (For example, you may wish to enter an IP address using the "N" Network Management Menu, and the "I" IP Configuration Submenu.)

Temporary Workaround

This procedure is to be used only with certain Grand Junction Network switches. Do not perform this procedure unless specifically instructed by authorized Grand Junction or Cisco personnel.

warning Warning:?Portions of this procedure require the unit to be powered on. Only qualified personnel should carry out the steps outlined below. Use proper Electrostatic Discharge (ESD) protection when you perform these steps.

Resources Required

  • two people

  • one wire jumper

  • ESD grounding strap



Follow these steps:

  1. Turn off the power to the unit, remove the top cover and secure the ground strap.

  2. Connect a terminal to the RS-232 port. Default: 9600,N,8,1

  3. Locate the section of circuitry shown in the figure above. Prepare a suitable jumper-wire to temporarily short point A of the highlighted resistor to point B of the highlighted capacitor. A jumper-wire may be test probes, paper clip, or other stiff wire. Note the labels of the components marked "R5XX" may vary according to board revision. Also, the pads of the other components are NOT shown to help simplify the figure.

  4. Carefully hold the jumper so as to short points A and B. In modular switches, this may be most easily achieved from the rear of the unit. This is a temporary jumper - DO NOT SOLDER.

  5. Have the second person turn on the power to the unit while the first holds the connection until the POST test has completed - approximately 40 seconds. The completion of the test is signaled when one of the LEDs on the main PCB starts to flash. Once POST is complete and the system menu appears on the management console, the connection should be removed taking care not to touch other components.

  6. If a prompt does not appear on the terminal, repeat steps 1 through 5 again, insuring that the jumper is making good connection.

  7. Once the prompt appears on the terminal, press enter once and remove the jumper. Select the System menu item. From the System menu, select Date and change the date to January 1, 1997 (1-1-97). Once the date is changed, the unit will function normally and may be powered down.

    Note:?This is a only a temporary fix! The long term fix will require a software upgrade. The Grand Junction FastSwitch 2000 Series Field Notice (Fax-on-Demand Doc#170) contains the URL for the software images and upgrade procedures.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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