CLI Guide

The configuration of IPsec authentication on an interface-level takes precedence
over an area-level configuration. If you remove an interface configuration, an area
authentication policy that has been configured is applied to the interface.
To remove an IPsec authentication policy from an OSPFv3 area, enter the no area
area-id authentication spi number command.
Related
Commands
• ipv6 ospf authentication – configure an IPsec authentication policy on an
OSPFv3 interface.
• show crypto ipsec policy – display the configuration of IPsec authentication
policies.
area encryption
Configure an IPsec encryption policy for OSPFv3 packets in an OSPFv3 area.
Syntax
area area-id encryption ipsec spi number esp encryption-
algorithm [key-encryption-type] key authentication-algorithm
[key-encryption-type] key
Parameters
area area-id
Area for which OSPFv3 traffic is to be encrypted. For area-
id, enter a number.
The range is from 0 to 4294967295.
ipsec spi number
Security Policy index (SPI) value that identifies an IPsec
security policy.
The range is from 256 to 4294967295.
esp encryption-
algorithm
Encryption algorithm used with ESP.
Valid values are: 3DES, DES, AES-CBC, and NULL.
For AES-CBC, only the AES-128 and AES-192 ciphers are
supported.
key-encryption-
algorithm
(OPTIONAL) Specifies if the key is encrypted.
Valid values: 0 (key is not encrypted) or 7 (key is encrypted).
key
Text string used in encryption.
The required lengths of a non-encrypted or encrypted key
are:
1278
Open Shortest Path First (OSPFv2 and OSPFv3)