What command should I use to check the CRCs on the switch fabric cards?
A. The show controllers fia command provides the requested information. You should check this command on the primary GRP and for all the line cards by attaching to each of them separately. If all of them complain about one switch fabric card, then first try to reseat it. If the problem still persists, replace the faulty board. If only one line card complains about one switch fabric card on which CRCs are increasing, then that line card is most likely faulty and not the switch fabric card. More information is available at How To Read the Output of the Show Controller fia Command.
