Users Guide

hex digits. For SHA1 authentication, the non-encrypted key must be 40 hex digits. An encrypted key is
not supported.
Example
OS10(config-router-ospfv3-100)# area 1 authentication ipsec spi 400 md5
12345678123456781234567812345678
Supported
Releases
10.4.0E(R1) or later
area encryption
Configures encryption for an OSPFv3 area.
Syntax
area area-id encryption ipsec spi number esp encryption-type key
authentication-type key
Parameters
● 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.
Default OSPFv3 area encryption is not configured.
Command Mode ROUTER-OSPFv3
Usage
Information
● 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.
Example
OS10(config-router-ospfv3-100)# area 1 encryption ipsec spi 401 esp des
1234567812345678 md5
12345678123456781234567812345678
Supported
Releases
10.4.0E(R1) or later
area stub
Defines an area as the OSPF stub area.
Syntax
area area-id stub [no-summary]
Parameters
● area-id—Set the OSPFv3 area ID as an IP address in A.B.C.D format or number, from 1 to 65535.
● no-summary—(Optional) Prevents an ABR from sending summary LAs into the stub area.
Default Not configured
Command Mode ROUTER-OSPFv3
Layer 3 973