Dell EMC SmartFabric OS10 User Guide Release 10.5.1

• area area-id — Enter an area ID as a number or IPv6 prefix.
• ipsec spi number — Enter a unique security policy index number, from 256 to 4294967295.
• esp encryption-type — Enter the encryption algorithm used with ESP (3DES, DES, AES-CBC, or NULL). For AES-CBC, only the AES-128 and AES-192 ciphers are supported.
• key — Enter the text string used in the encryption algorithm.
• authentication-type — Enter the encryption authentication MD5 or SHA1 algorithm to use.
• key — Enter the text string used in the authentication algorithm.

• Before you enable IPsec encryption for an OSPFv3 area, you must enable OSPFv3 globally on each router.
• When you configure encryption at the area level, both IPsec encryption and authentication are enabled. You cannot configure encryption if you have already configured an IPsec area authentication using the area ospf authentication ipsec command. To configure encryption, you must first delete the authentication policy.
• All OSPFv3 routers in the area must share the same encryption key to decrypt information. Only a non-encrypted key is supported. Required lengths of the non-encrypted key are: 3DES — 48 hex digits; DES — 16 hex digits; AES-CBC — 32 hex digits for AES-128 and 48 hex digits for AES-192.
• All OSPFv3 routers in the area must share the same authentication key to exchange information. Only a non-encrypted key is supported. For MD5 authentication, the non-encrypted key must be 32 plain hex digits. For SHA1 authentication, the non-encrypted key must be 40 hex digits. An encrypted key is not supported.

OS10(config-router-ospfv3-100)# area 1 encryption ipsec spi 401 esp des 1234567812345678 md5
12345678123456781234567812345678