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# area-authentication

#### Syntax

[ no ] area-authentication { csnp | psnp }

#### Release Information

Command introduced before JUNOSe Release 7.1.0.

#### Description

Enables or disables (suppresses) simple text authentication or HMAC MD5 authentication of IS-IS level 1 CSNP packets or PSNP packets. The no version restores the default behavior, in which authentication of IS-IS level 1 CSNPs and PSNPs is disabled.

#### Options

- csnp—Enables authentication of IS-IS level 1 complete sequence number PDUs (CSNPs)
- psnp—Enables authentication of IS-IS level 1 partial sequence number PDUs (PSNPs)

#### Mode

Router Configuration

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