Ultra Packet Core CUPS Control Plane Administration Guide, Release 21.26

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Updated:: December 24, 2021

S2a Interface Support

Revision History

Note

Revision history details are not provided for features introduced before release 21.24.


Revision Details	Release
First introduced	Pre 21.24

Feature Description

This reference point supports the bearer interface by providing signaling and mobility support between a trusted non-3GPP access point (Trusted WiFi Gateway (TWAN)/Converged Access Gateway (CGW)) and PDN Gateway (P-GW). It is a GTP based interface support that allows the connectivity to the trusted non-3GPP IP access points. The S2a interface uses IPv4 and IPv6 for both control and data.

Supported Protocols

Transport Layer: UDP, TCP
Tunneling: GTP IPv6
Network Layer: IPv4, IPv6
Data Link Layer: ARP
Physical Layer: Ethernet

Figure 1. Protocols Supported on the S2a Interface

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