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Configuring the SNMPv3 Authentication Type

By default, in a JUNOS configuration the SNMPv3 authentication type is set to none.

This topic includes the following sections:

Configuring MD5 Authentication

To configure the message digest algorithm (MD5) as the authentication type for an SNMPv3 user, include the authentication-md5 statement at the [edit snmp v3 usm local-engine user username] hierarchy level:



[edit snmp v3 usm local-engine user username] 

authentication-md5 {

authentication-password authentication-password;
}

authentication-password is the password used to generate the key used for authentication.

SNMPv3 has special requirements when you create plain-text passwords on a routing platform:

The password must be at least eight characters long.
You can include most character classes in a password (alphabetic, numeric, and special characters), except control characters.

Configuring SHA Authentication

To configure the secure hash algorithm (SHA) as the authentication type for an SNMPv3 user, include the authentication-sha statement at the [edit snmp v3 usm local-engine user username] hierarchy level:



[edit snmp v3 usm local-engine user username] 

authentication-sha {

authentication-password authentication-password;
}

authentication-password is the password used to generate the key used for authentication.

SNMPv3 has special requirements when you create plain-text passwords on a routing platform:

The password must be at least eight characters long.
You can include most character classes in a password (alphabetic, numeric, and special characters), except control characters.

Configuring No Authentication

To configure no authentication for an SNMPv3 user, include the authentication-none statement at the [edit snmp v3 usm local-engine user username] hierarchy level:



[edit snmp v3 usm local-engine user username] 

authentication-none;

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