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# area virtual-link message-digest-key md5

#### Syntax

area { areaId | areaIdInt } virtual-link ipAddress
message-digest-key md5KeyId md5 [ 0 | 8 ] msgDigestKey

no area { areaId | areaIdInt } virtual-link ipAddress message-digest-key md5KeyId

#### Release Information

Command introduced before JUNOSe Release 7.1.0.

#### Description

Enables MD5 authentication and configures MD5 keys for virtual links. The no version deletes MD5 keys.

| Note: If you delete all the MD5 keys, the authentication type for the virtual link is still MD5, but you need to configure MD5 keys. To disable MD5 authentication for the virtual link, use the area virtual-link authentication-none command.

#### Options

- areaId—OSPF area ID in IP address format
- areaIdInt—OSPF area ID as a decimal value in the range 0–4294967295
- ipAddress—IP address of the virtual link neighbor
- md5KeyId—Key identifier in the range 1–255
- 0—Indicates the msgDigestKey is entered in unencrypted form (plaintext); this is the default option
- 8—Indicates the msgDigestKey is entered in encrypted form (ciphertext)
- msgDigestKey—Password to be used by neighbors; string of up to 16 alphanumeric characters. All neighboring routers on the same network must have the same password.

#### Mode

Router Configuration

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