Dynamic Control Method of Explicit Address Mapping Table in IPv6 Single-Stack Network

Abstract

In recent years, Internet Data Center (IDC) network operation with IPv6 single-stack gathers attention because of IPv4 address pool exhaustion and the high operational load associated with IPv4/IPv6 dual-stack. Since IPv4 traffic still accounts for a large percentage of the total Internet traffic, it is necessary to provide IPv4 services even in IPv6 single-stack networks. A method of providing IPv4 accessibility in an IPv6 single-stack network is known as IPv4 as a Service (IPv4aaS); there are three possible approaches. This research proves that IPv4/IPv6 translation is the most compatible and effective for IDC network operations. The SIIT-DC network design has been standardized as a way to provide IPv4 services with IPv4 / IPv6 Translation. In SIIT-DC, a translation node referred to as Border Relay (BR) is connected between the IPv4 Internet and an IPv6 IDC network in order to translate IPv4 and IPv6 mutually (in order to enable IPv4 service provision in IPv6 server). However, to operate an SIIT-DC network without the lack of redundancy and operational load spikes in multi-homing networks, the Explicit Address Mapping Table (EAMT) must be shared dynamically and consistently with BRs. This paper compares approaches to control EAMT dynamically in SIIT-DC environment and clarifies the benefits and drawbacks of each. The results are expected to contribute to the design of IPv6 single-stack networks in IDC.