Today CND is releasing its Gateways Datasheets. Access it here
OpenEPC Gateways comprise the Serving Gw and PDN-Gw which can be deployed separately or as a common element; the SGSN, for the 2G and 3G access; the ePDG and TWAG for Wi-Fi Access and the HomeNodeBGw supporting 3G femtocells.
Beside the rich set of features, like support for both GTP or PMIPv6, one that is particularly outstanding is our embracement of SDN (Software Defined Networks) as we recognise its potential to transform core networks.
OpenEPC Gateways support new SDN concepts that provide the foundations of mobile networks of tomorrow and solve some of the most complex challenges of the mobile communications ecosystem.
SDN paradigms modify the way in which networks forward and route packages. SDN has been triggered by the need to simplify components and move out from proprietary hardware in switches and networking equipment. SDN, in its most orthodox interpretation, introduces a separation between control plane and user plane and is applicable on the first place to the packet forwarding elements like the Gateways. There are also less orthodox interpretations of SDN that refer to software-defined-everything by enabling components to be remotely operated, configured and management.
In mobile networks data plane and control plane have long been separated by using protocols like GTP; OpenEPC main Gateways: Serving-Gw and PDN-Gw have been pioneer in the implementation of further SDN concepts by separating into two functional layers: the simple packet forwarding layer and the controlling layer. Between these two layers an extended version of OpenFlow provides a standards based open interface that enables our customers to innovate.
Beyond OpenFlow all elements of OpenEPC provide interfaces for remote management using APIs that permit to modify their behavior. Protocols like NETCONF, RESTCONF and new paradigms are being evaluated in projects with our customers to innovate further towards a more flexible and standards compliant proposition.
An area in which new SDN paradigms are arising is that of decentralized mobility and particularly EPC behavior in distributed core networks setups. Core Network Dynamics is also researching in this area that will permit operators to move the core network nearer to the users and data sources, decreasing latencies while reducing cost of operation.
It’s impossible not to refer to NFV when talking about SDN since both technological trends influence and complement each other. CND has foreseen the relevance of the NFV/SDN combination and provides an NFV/SDN enabled solution which gives its customers the most of flexibility and dynamicity.