Flash Loading

This appendix explains how to load new software into the flash EPROMs on the cards in a LightStream 2020 enterprise ATM switch. Flash memory contains card initialization software, power-on self tests, and the SWACC loader, which loads software from the hard disk into the card when the card powers up.

Whenever you install a new line card, switch card, or network processor (NP) in a LightStream 2020 switch, do the following:

• Use the "Verifying Flash " procedure in this appendix to determine whether the content of the new card's flash is up to date.

• If the new card's flash is not up to date, reload it as described in the section "Reloading Flash".

Verifying Flash

After installing a new card, follow these instructions to find out whether the content of the card's flash memory is up to date.

Step 1 Log in to the primary NP as root.

Step 2 To display the flash checksums of all the cards in the chassis, type:

bash# sysver -a | more

Step 3 Refer to your LightStream 2020 Release Notes for a list of the correct checksums for your software version.

Step 4 If the checksum displayed for the new card matches the one listed in the release notes, stop here-the flash is up to date. If the checksum does not match, use the appropriate procedure from the section "Reloading Flash", below, to load an up-to-date flash image into the card.

Reloading Flash

This section contains two flash reloading procedures:

• "Reloading Flash on a Line Card or NP"

• "Reloading Flash on a Switch Card "

Reloading Flash on a Line Card or NP

If the "Verifying Flash " procedure reveals that you have out-of-date flash contents on an NP or line card, follow this procedure to reload flash on that card.

Step 1 Warn anyone who relies on this LightStream 2020 system that it's about to go out of service. (The outage will probably last only a few minutes.)

Step 2 If you have not already done so, log into the primary NP as root.

Step 3 Type the following command to load the new image into flash memory:

LSnode:2# fcload -s <slot#> -flash -force


<slot#> represents the slot number of the card with the incorrect flash checksum.

Step 4 Once flash is reloaded, you must reboot the system to initiate operation with the new flash, as follows:

• Type the following command to halt the system:

LSnode:2# reboot -n

• Turn off the chassis power, wait 30 seconds, and turn the power back on.

• If you wish to watch the boot process, type '. to display a TCS hub prompt, then reconnect to the NP by typing connect 1 or connect 2.

Step 5 Repeat the "Verifying Flash " procedure at the beginning of this appendix. If the card still has an incorrect flash checksum, contact your customer support representative.

Reloading Flash on a Switch Card

If the "Verifying Flash " procedure at the beginning of this appendix reveals that you have out-of-date flash contents on a switch card, follow this procedure to reload flash on that card.

Step 1 Warn anyone who relies on this LightStream 2020 system that it's about to go out of service. (The outage will probably last only a few minutes.)

Step 2 Connect to the NP and log in as root.

Step 3 At the prompt, enter the following command to shut down LynxOS:

LSnode:2# reboot -n

Step 5 At the menu's Option prompt, enter 6:

 ******************************************
 * System Diagnostic Debug Monitor        *
 * Revision 1.305 (Oct 10 1994)           *
 * Type  'help'  or  '?'  for help        *
 ******************************************
System Monitor->

Step 8 To load flash into the switch card, enter one of the following commands. The first is for the switch card in slot A, the second for slot B. (Again, the 0 in (sd0b) is a zero.)

• If you see the System Monitor-> prompt, the flash load has completed successfully. Proceed to Step 10.

• If you see the following error message, repeat Step 8:

flash failed to erase or is not erased
ACTION_FLASH=0x45


• If you do not see the error message above, but the System Monitor-> prompt does not reappear, the flash load has failed. Do the following:

• Disconnect from the NP by typing '. (backquote-dot) to access the TCS hub.

• Reset the NP by typing reset <slot#> at the TCS hub prompt.

• Reconnect to the same NP by typing connect <slot#> at the TCS hub prompt. You'll see a display that mentions memory autosizing and NP1 POST.

• Press [Return] when the following prompt appears:

System will boot in 5 seconds: hit <RETURN> to interrupt.

This prompt is repeated once a second, giving you more than one opportunity to press the [Return] key and prevent a reboot. When you press [Return], the boot menu appears:

Network Processor bootstrap (version 1.3: Sep 13 1993)
1 - Boot ATM switch application
2 - Begin full installation with boot from floppy disk
Boot from floppy (read-only, single-user) for an
installation from scratch
3 - List contents of hard disk root directory
4 - List contents of floppy disk root directory
5 - Boot system single-user
6 - Escape to full set of bootstrap options
Allows specification of drive, application, and boot options
7 - Extended help
Give somewhat more information about options
Option>

• Return to Step 5 and repeat this procedure from that point.

Step 10 Once flash is loaded, you must reboot the system to initiate operation with the new flash, as follows:

• Type the following command to halt the system:

LSnode:2# reboot -n

• Turn off the chassis power, wait 30 seconds, and turn the power back on.

• If you wish to watch the boot process, type '. to display a TCS hub prompt, then reconnect to the NP by typing connect 1 or connect 2.

Step 11 Repeat the "Verifying Flash " procedure at the beginning of this appendix. If the card still has an incorrect flash checksum, contact your customer support representative.