Fortinet MR1 - Manual (Page 340)

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Default Setting
None
Command Mode
Interface Config
6.3.2.27 ip ospf authentication
This command sets the OSPF Authentication Type and Key for the specified interface.
The value of <type> is either none, simple or encrypt. If the type is encrypt a <keyid> in the
range of 0 and 255 must be specified.
Syntax
ip ospf authentication {none | {simple <key>} | {encrypt <key> <keyid>}}
no ip ospf authentication
< key > - It is composed of standard displayable, non-control keystrokes from a Standard 101/102-key
keyboard. The authentication key must be 8 bytes or less if the authentication type is simple. If the type
is encrypt, the key may be up to 256 bytes.
<keyid> - The range is 0 to 255.
Default Setting
The default authentication type is none. The default password key is not configured. Unauthenticated
interfaces do not need an authentication. The default keyid is not configured.
Command Mode
Interface Config
6.3.2.28 ip ospf cost
This command configures the cost on an OSPF interface.