Service Manual

Usage Information Before you enable IPsec authentication on an OSPFv3 area, you must rst enable OSPFv3 globally on the
router. Congure the same authentication policy (same SPI and key) on each interface in an OSPFv3 link.
An SPI number must be unique to one IPsec security policy (authentication or encryption) on the router.
If you have enabled IPsec encryption in an OSPFv3 area with the area encryption command, you
cannot use the area authentication command in the area at the same time.
The conguration of IPsec authentication on an interface-level takes precedence over an area-level
conguration. If you remove an interface conguration, an area authentication policy that has been
congured 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 – congures an IPsec authentication policy on an OSPFv3 interface.
show crypto ipsec policy – displays the conguration of IPsec authentication policies.
area encryption
Congure 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 trac 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 identies 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) Species 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:
3DES - 48 or 96 hex digits; DES - 16 or 32 hex digits; AES-CBC -32 or 64 hex
digits for AES-128 and 48 or 96 hex digits for AES-192.
1052
Open Shortest Path First (OSPFv2 and OSPFv3)