Configuring OSPF password authentication
Syntax:
ip ospf [ip-address] authentication-key key-string
no ip ospf [ip-address] authentication
Used in the VLAN interface context to configure password authentication for all interfaces in the VLAN or for a specific subnet. The password takes effect immediately, and all OSPF packets transmitted on the interface contain this password. All OSPF packets received on the interface are also checked for the password. If it is not present, the packet is dropped.
To disable password authentication on an interface, use the
no form of the command.
When the switch is in enhanced secure mode, commands that take a secret key as a parameter have the echo of the secret typing replaced with asterisks. The input for
key-string
is prompted for interactively. For more information, see the
access security guide for your switch.
ip-addressUsed in subnetted VLAN contexts where you want to assign or remove a password associated with a specific subnet.
Omit this option when you want the command to apply to all interfaces configured in the VLAN.
key-stringAn alphanumeric string of one to eight characters. (Spaces are not allowed.)
To change the password, re-execute the command with the new password.
Use
show ip ospf interface
to view the current authentication setting.
ip-address
To replace the password method with the MD5 method on a given interface, overwrite the password configuration by using the MD5 form of the command shown in the next syntax description. (It is not necessary to disable the currently configured OSPF password.)
Default: Disabled