Configuring the SCTP Endpoint

To configure the SCTP endpoint, use the following configuration:

config 
    instance instance-id instance_id 
        endpoint sctp 
            vip-ip existing_ipv4_address offline 
                vip-ip new_ipv4_address vip-port port_number 
            vip-ipv6 existing_ipv6_address offline 
                vip-ipv6 new_ipv6_address vip-ipv6-port port_number 
                end 

NOTES:

  • endpoint sctp —Specify the endpoint name as sctp.

  • vip-ip existing_ipv4_address offline —Specify IPv4 address and mark it as offline.

  • vip-ip new_ipv4_address vip-port port_number —Specify the new IPv4 address and port number.

  • vip-ipv6 existing_ipv6_address offline —Specify the IPv6 parameters of the pod on which VIP is enabled.

  • vip-ipv6 new_ipv6_address vip-ipv6-port port_number —Specify new IPv6 address and port number.

Use the following procedure to update the SCTP VIP-IP and port:

  1. Add the new VIP-IP port.

  2. Modify the gNB configuration to refer to the new VIP-IP and port.

  3. When all gNBs refer to new VIP-IP, remove the old VIP-IP and port.

Note
  • Post VIP-IP changes, AMF supports only resuming of IDLE mode subscribers with EEA0/EIA0 as the security algorithm.

  • The change in the SCTP IP address isn’t supported dynamically but the port change is supported.

  • For any addition, deletion, or update of a new IP to the existing SCTP service requires the AMF restart.