Allied Telesis AT-S63 - Manual (Page 304)

Chapter 18: SNMPv3 Commands
304 Section IV: SNMPv3
destroy snmpv3 access=swengineering securitymodel=v3
securitylevel=authentication
The following command deletes the SNMPv3 Access Table entry called
“testengineering” with a security model of the SNMPv3 protocol and a
security level of privacy.
destroy snmpv3 access=testengineering securitymodel=v3
securitylevel=privacy