Dell S4820T, Configuration Manual

Page: 723 / 1178

The security policy index (SPI) value must be unique to one IPSec security policy (authentication or
encryption) on the router. Configure the same authentication policy (the same SPI and key) on each
interface in an OPSFv3 link.
If you have enabled IPSec encryption in an OSPFv3 area using the
area encryption
command, you
cannot use the
area authentication
command in the area at the same time.
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.
• Enable IPSec authentication for OSPFv3 packets in an area.
CONF-IPV6-ROUTER-OSPF mode
area- id authentication ipsec spi number {MD5 | SHA1} [ key-encryption-type ]
key
–
area area-id
: specifies the area for which OSPFv3 traffic is to be authenticated. For
area-id
,
enter a number or an IPv6 prefix.
–
spi number
: is the SPI value. The range is from 256 to 4294967295.
–
MD5 | SHA1
: specifies the authentication type: message digest 5 (
MD5
) or Secure Hash Algorithm
1 (
SHA-1
).
–
key-encryption-type
: (optional) specifies if the key is encrypted. The valid values are
0
(key is
not encrypted) or
7
(key is encrypted).
–
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).
• Remove an IPSec authentication policy from an OSPFv3 area.
no area area-id authentication ipsec spi number
• Display the configuration of IPSec authentication policies on the router.
show crypto ipsec policy
Configuring IPsec Encryption for an OSPFv3 Area
To configure, remove, or display IPsec encryption in an OSPFv3 area, use the following commands.
Prerequisite : Before you enable IPsec encryption in an OSPFv3 area, first enable OSPFv3 globally on the
router (refer to Configuration Task List for OSPFv3 (OSPF for IPv6) ).
The SPI value must be unique to one IPsec security policy (authentication or encryption) on the router.
Configure the same encryption policy (the same SPI and keys) on each interface in an OPSFv3 link.
NOTE: When you configure encryption using the
area encryption
command, you enable both
IPsec encryption and authentication. However, when you enable authentication on an area using
the
area authentication
command, you do not enable encryption at the same time.
If you have enabled IPsec authentication in an OSPFv3 area using the
area authentication
command, you cannot use the
area encryption
command in the area at the same time.
The configuration of IPsec encryption on an interface-level takes precedence over an area-level
configuration. If you remove an interface configuration, an area encryption policy that has been
configured is applied to the interface.
Open Shortest Path First (OSPFv2 and OSPFv3)
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