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# isis authentication-key

#### Syntax

isis authentication-key [ level-1 | level-2 ] authKey

no isis authentication-key [ level-1 | level-2 ]

#### Release Information

Command introduced before JUNOSe Release 7.1.0.

#### Description

Assigns a password for IS-IS level 1 and level 2 hellos used by neighboring routers that are using IS-IS password authentication. The no version deletes the password.

#### Options

- level-1—Inserts the password into level 1 hello packets
- level-2—Inserts the password into level 2 hello packets
- authKey—Password; string of up to 8 characters

#### Mode

Interface Configuration, Subinterface Configuration

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