Cisco Catalyst SD-WAN Remote Access Configuration Guide, Releases 26.x and Later

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Cisco Catalyst SD-WAN Remote Access Configuration Guide, Releases 26.x and Later

Configure IKEv2 ciphers and parameters

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Configure IKEv2 proposals, policies, and parameters for an SD-WAN RA headend device using CLI add-on templates in Cisco SD-WAN Manager.


Configure the IKEv2 encryption settings required for an SD-WAN RA headend device to establish secure VPN connections.

When configuring a device to function as an SD-WAN RA headend, you can combine all the required configuration commands into a single CLI add-on template. Use the configuration commands in config-transaction mode.

Procedure

  1. Configure an IKEv2 proposal.

    Example:

    crypto ikev2 proposal ikev2-proposal-name 
    encryption encryption-algorithms 
    integrity integrity-algorithms 
    group DH-group-numbers 
    prf prf-algorithms 

    Example:

    crypto ikev2 proposal sdra_ikev2_proposal
    encryption aes-cbc-256
    integrity sha256
    group 19
    prf sha384
  2. Configure an IKEv2 policy.

    Example:

    crypto ikev2 policy ikev2-policy-name 
    proposal ikev2-proposal-name 

    Example:

    crypto ikev2 policy sdra_ikev2_policy
    proposal sdra_ikev2_proposal
  3. Configure IKEv2 parameters.

    Example:

    crypto ikev2 cookie-challenge threshold-half-open-connections 
    crypto ikev2 fragmentation mtu ikev2-mtu 

    Example:

    crypto ikev2 cookie-challenge 100
    crypto ikev2 fragmentation mtu 1400

The IKEv2 encryption settings are configured for the SD-WAN RA headend device.