Chapter 29
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 859 –
ip ospf
authentication-key
This command assigns a simple password to be used by neighboring routers to
verify the authenticity of routing protocol messages. Use the no form to remove
the password.
Syntax
ip ospf [ip-address] authentication-key key
no ip ospf [ip-address] authentication-key
ip-address - This parameter can be used to indicate a specific IP address
connected to the current interface. If not specified, the command applies
to all networks connected to the current interface.
key - Sets a plain text password. (Range: 1-8 characters)
Command Mode
Interface Configuration (VLAN)
Default Setting
No password
Command Usage
◆ Before specifying plain-text password authentication for an interface with the
ip ospf authentication command, configure a password with this command.
◆ This command creates a password (key) that is inserted into the OSPF header
when routing protocol packets are originated by this device. Assign a separate
password to each network for different interfaces. All neighboring routers on
the same network with the same password will exchange routing data.
◆ A different password can be assigned to each network interface, but the
password must be used consistently on all neighboring routers throughout a
network (i.e., autonomous system).
Example
This example sets a password for the specified interface.
Console(config)#interface vlan 1
Console(config-if)#ip ospf authentication-key badboy
Console(config-if)#
Related Commands
ip ospf authentication (857)
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