Garbage characters from console cable overload SP and leads to Panic
Applies to
- AFF Models
- FAS Models
- ONTAP 9
- Console connection
Issue
- When connecting to the console using USB or micro USB console connection, random garbage characters are displayed on the screen similar to below:
LOADER-A> mow}omw
Invalid command: "mow}omw"
Available commands: savenv, netboot, boot_diags, boot_backup, boot_primary, boot_ontap, update_flash, flash, sp, fc, decryption, encryption, create_file, tar, version, bye, set, lsmod, autoboot, go,
boot_recovery, boot, load, ndp, ping, arp, ifconfig, show, saveenv, unsetenv, set-defaults, setenv, printenv, undi, help
*** command status = Error(-1)
LOADER-A> {oom}ow
- This constant activity overloads the SP and we cannot process a request. If no heartbeat is detected for over 15 seconds, NetApp panics and assumes the node is down and will initiate a takeover of the node.
