Reference Guide

– esp encryption-algorithm: specifies the encryption algorithm used with ESP. The valid values are
3DES, DES, AES-CBC, and NULL. For AES-CBC, only the AES-128 and AES-192 ciphers are supported.
– key: specifies the text string used in the encryption. All neighboring OSPFv3 routers must share the same
key to decrypt information. 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.
– key-encryption-type: (optional) specifies if the key is encrypted. Valid values: 0 (key is not
encrypted) or 7 (key is encrypted).
– authentication-algorithm: specifies the authentication algorithm to use for encryption. The valid
values are MD5 or SHA1.
– key: specifies the text string used in authentication. All neighboring OSPFv3 routers must share key to
exchange information. For MD5 authentication, the key must be 32 hex digits (non-encrypted) or 64 hex digits
(encrypted). For
SHA-1 authentication, the key must be 40 hex digits (non-encrypted) or 80 hex digits
(encrypted).
– key-authentication-type: (optional) specifies if the authentication key is encrypted. The valid
values are 0 or 7.
• Remove an IPsec encryption policy from an OSPFv3 area.
no area area-id encryption ipsec spi number
• Display the configuration of IPsec encryption policies on the router.
show crypto ipsec policy
Displaying OSPFv3 IPsec Security Policies
To display the configuration of IPsec authentication and encryption policies, use the following commands.
• Display the AH and ESP parameters configured in IPsec security policies, including the SPI number, key, and
algorithms used.
EXEC Privilege mode
show crypto ipsec policy [name name]
– name: displays configuration details about a specified policy.
• Display security associations set up for OSPFv3 links in IPsec authentication and encryption policies on the router.
EXEC Privilege
show crypto ipsec sa ipv6 [interface interface]
To display information on the SAs used on a specific interface, enter interface interface, where interface
is one of the following values:
– For a 1-Gigabit Ethernet interface, enter GigabitEthernet slot/port.
– For a Port Channel interface, enter port-channel number.
– For a 10-Gigabit Ethernet interface, enter TenGigabitEthernet slot/port.
– For a VLAN interface, enter vlan vlan-id. The valid VLAN IDs are from 1 to 4094.
In the first example, the keys are not encrypted (shown in bold). In the second and third examples, the keys are
encrypted (shown in bold).
Example of the show crypto ipsec policy Command
FTOS#show crypto ipsec policy
Crypto IPSec client security policy data
Policy name : OSPFv3-1-502
Policy refcount : 1
Inbound ESP SPI : 502 (0x1F6)
601