# address authentication mode

#### Syntax

address { ipAddress | unnumbered interfaceType interfaceSpecifier }
authentication mode { text | md5 keyID }

no address [ ipAddress | unnumbered interfaceType interfaceSpecifier ]
authentication mode

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Specifies the type of authentication used on this interface. The no version removes authentication from the interface. Supported only in RIP version 2. Authentication is disabled by default.

#### Options

- ipAddress—Address of IP interface where RIP will be run
- unnumbered—Specifies RIP will be run on an unnumbered interface
  - interfaceType—Interface type; see Interface Types and Specifiers
  - interfaceSpecifier—Particular interface; format varies according to interface type; see Interface Types and Specifiers
- text—Simple text password is sent with each RIP message. If the password is not possessed by neighbors, the message is rejected.
- md5—MD5 message-digest algorithms are used to encrypt and compress the RIP message.
- keyID—Number identifying the MD5 key. Neighbors must share the MD5 key to decrypt the message and encrypt the response.

#### Mode

Address Family Configuration, Router Configuration