This object indicates the password of IS-IS area authentication. The password is a string of characters.
If the IS-IS area authentication mode is simple, the password is a string of 0 to 16 characters.
If the IS-IS area authentication mode is MD5, the password is a string of 0 to 392 characters.
If the IS-IS area authentication mode is keychain, the name is a string of 0 to 47 characters.
The length 0 indicates that no IS-IS area authentication password is configured.
When read, it always returns length 0.