3Com Switch 4500 Family Manual page 639

Parameters
engineid: Engine ID, a string of 10 to 64 hexadecimal digits.
user-name: SNMPv3 username, a string of 1 to 32 characters.
group-name: Name of an SNMP group, a string of 1 to 32 characters.
Description
Use the display snmp-agent usm-user command to display the information about a specific type of
SNMPv3 users.
If you execute this command with no keyword specified, the information about all the SNMPv3 users is
displayed, including username, group name, engine ID, storage type and user status.
SNMPv3 introduced the concepts of username and group. You can set the authentication and privacy
functions. The former is used to authenticate the validity of the sending end of the packets, preventing
access of illegal users; the latter is used to encrypt packets between the NMS and agent, preventing the
packets from being intercepted. A more secure communication between SNMP NMS and SNMP agent
can be ensured by configuring whether to perform authentication and privacy or not.
You can configure whether to perform authentication and privacy when you create an SNMPv3 group,
and configure the specific algorithms and passwords for authentication and privacy when you create a
user.
Examples
# Display the information about all the SNMP users.
<Sysname> display snmp-agent usm-user
User name: usm-user
Group name: usm-group9-0
Engine ID: 800007DB000FE20F12346877
Storage-type: nonVolatile
UserStatus: active
Table 1-4 display snmp-agent usm-user command output description
Field
User name
Group name
Engine ID
Storage-type
UserStatus
SNMP username
The name of the SNMP group which the SNMP user belongs to
SNMP engine ID of the device
Storage type, which can be:
volatile: Information will be lost if the system is rebooted
nonVolatile: Information will not be lost if the system is rebooted
permanent: Modification is permitted, but deletion is forbidden
readOnly: Read only, that is, no modification, no deletion
other: Other storage types
SNMP user status
1-10
Description