Dell EMC SmartFabric OS10 User Guide Release 10.5.0

Configure IPsec authentication on interfaces

Prerequisite: Before you enable IPsec authentication on an OSPFv3 interface, first enable IPv6 unicast routing globally, then enable OSPFv3 on the interface, and assign it to an area.

The SPI value must be unique to one IPsec authentication or encryption security policy on the router. You cannot configure the same SPI value on another interface even if it uses the same authentication or encryption algorithm.

You cannot use an IPsec MD5 or SHA-1 authentication type and the null setting at same time on an interface. These settings are mutually exclusive.

• Enable IPsec authentication for OSPFv3 packets in Interface mode.

  ipv6 ospf authentication {null | ipsec spi number {MD5 | SHA1} key}

  • null — Prevent an authentication policy configured for the area to be inherited on the interface. Only use this parameter if you configure IPsec area authentication.
  • ipsec spi number — Enter a unique security policy index (SPI) value, from 256 to 4294967295.
  • md5 — Enable message digest 5 (MD5) authentication.
  • sha1 — Enable secure hash algorithm 1 (SHA-1) authentication.
  • key — Enter the text string used in the authentication type. All neighboring OSPFv3 routers must share the 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 SHA-1 authentication, the non-encrypted key must be 40 hex digits. An encrypted key is not supported.

To delete an IPsec authentication policy, use the no ipv6 ospf authentication ipsec spi number or no ipv6 ospf authentication null command.

OS10(conf-if-eth1/1/1)# ipv6 ospf authentication ipsec spi 400 md5 12345678123456781234567812345678
OS10(conf-if-eth1/1/1)# show configuration
!
interface ethernet1/1/1
ipv6 ospf authentication ipsec spi 400 md5 12345678123456781234567812345678
no switchport
no shutdown
ipv6 address 1::1/64