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have the correct community name, user can't retrieve any data
(get) or make any change (set). Multiple SNMP managers may be
organized in a specified community.
V3
The SNMP V3 is a Security Enhancement for SNMP, it provides
secure access to devices by a combination of userID,
authenticating and encrypting packets over the network.
User ID: A string representing the name of the user.
Security Level: User can select which security level that user wants
to use. The available options for this field are: NoAuthNoPriv,
AuthNoPriv or AuthPriv.
Auth Type (Authentication Protocol): An indication of which
authentication protocol is used. The available options for this field
are: MD5, and SHA.
Auth Passphrase (Authentication Key): A secret key used by the
authentication protocol for authenticating messages.
Privacy Protocol: An indication of which privacy protocol is used.
The available option for this field is: DES.
Priv Passphrase (Privacy Key): The secret key used by the privacy
protocol for encrypting and decrypting messages.
Access Right: Assign the access right for account. The options are:
Unused – The account is disabled.
Read Only – The account has read only access rights.
Read Write – The account has read and writes access rights.
usm – This account will be an usm account and assign access
rights by VACM.
Figure 3-2-27
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