CGN

Overview of CGN

This section describes basic concepts and related technologies of CGN.

Dual Stack

Dual stack enables devices to forward both IPv4 and IPv6 packets.

NAT444

NAT444 refers to the technology of twice IPv4 address translation in one sending process.

PCP

PCP applies to a NAT444 scenario, ensure the P2P services, such as file sharing, voice communication, and video transfer can properly run.

Static Mapping

Static mapping is a fast way to translate addresses and can be used to trace user addresses in real time.

DS-Lite

The dual-stack lite (DS-Lite) technology allows private IPv4 network users to access public IPv4 networks through IPv6 networks.

Port Pre-allocation and Incremental Allocation

Port pre-allocation and incremental allocation decrease logs generated by the CGN device, reduce stress of the log servers from receiving and managing logs, and improve the log server's data tracing efficiency.

NAT64

Network Address Translation IPv6-to-IPv4 (NAT64) is a transition technology used during IPv4-to-IPv6 transition. NAT64 connects IPv6 networks to IPv4 networks and supports data exchanges between the IPv6 and IPv4 networks.