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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Configuring IPSec Authentication for an OSPFv3 Area

To configure, remove, or display IPSec authentication for an OSPFv3 area, use the following commands.

Prerequisite: Before you enable IPsec authentication on an OSPFv3 area, first enable OSPFv3 globally on the router (refer to Configuration Task List for OSPFv2 (OSPF for IPv4) ).

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

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