Ubuntu SNMPwalk v3

Подскажите как при запросе snmpwalk -v 3 -a SHA -A $NMPfrоmHQdq5 -l authPriv -u DB-IQ-SNMP.usr5 -x DES -X HFTQkFy4SNMP 10.20.255.250

исправить ошибку

Error: passphrase chosen is below the length requirements of the USM (min=8).
snmpwalk:  (The supplied password length is too short.)
Error generating a key (Ku) from the supplied authentication pass phrase.