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This appendix explains how to load new software into the flash EPROMs on the cards in a LightStream 2020 multiservice ATM switch (LS2020 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:
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, enter:
sysver -a | moreStep 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 procedure in the following section, "Reloading Flash," to load an up-to-date flash image into the card.
If the "Verifying Flash " procedure above reveals that you have out-of-date flash contents on an NP, line, or switch card, follow this procedure to reload flash on that card.
Step 1 Warn anyone who relies on this LS2020 system that it is 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 in to the primary NP console as root.
Step 3 Enter the following command to load the new image into flash memory:
<slot#> -flash -force
<slot#> represents the slot number of the card with the incorrect flash checksum.
Step 4 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.
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