Mobility and cloud: an air of Roque?

The Internet, as we know it will not change suddenly, do not worry. We’ll just see a gradual evolution eliminate some « patches » that have occurred to make way for new protocols offering a new intelligence above the borders of the Internet, where services are managed and the users are. Two main forces stressing the boundaries of the Internet : mobile Internet users now addressed and routed in more IP, and virtual machines, IP also, also begin to move through the « data center ». It has therefore an inescapable similarity : Mobile IP users and virtual machines move will be managed with the same « tools ».

Within the cloud consortium, the focus is mainly on new mobility features of the machines in a context where the majority of users interconnect clouds through IP. It is here not just user mobility, manageable by changing the network location of mobile users, but also (mainly) mobility servers, virtual machines and services.

Managing such volatility attachments points users on one side and the other servers called for unification of protocols for IP mobility. Operational simplifications facilitate new advanced ubiquitous services; for example, a green data center management across the globe (« follow the sun ») : only the location changes, the Internet address of a server that moved remain the same in several datacenters at the end of the world. Therefore clones servers can coexist at the same time, for light (and locate) when it is dark (electricity is cheaper), or to share the load in case of congestion, or to distinguish the content based on the geographic zone. Or, servers follow more users accessing the, when the number of users accessing the same server becomes significant.

In this context, So what will be the « patches » destined to disappear, and new protocols ? Mobile IP, Your online v4 V6, with its routing mechanisms and encapsulation triangular or compatibility issues will no longer make much sense because users as well as mobile machines do not necessarily have a « house » reference. Protocols like LISP (« Locator Identifier Separation Protocol ») provide a distributed control plane to dynamically manage the location by IP-in-IP encapsulation end-to-end or intra-hierarchical operator. Some extensions to Ethernet, adopted to meet the needs of data centers and networks, mobile backhaul, Tello IEEE 802.1ad/ah/aq, too complex and costly (net flow and CAPEX) could leave space for new protocols through better scale as TRILL (« Transparent Interconnection of a Lot of Links »).

Plans LISP control and TRILL, both in the IETF standardization, adapt easily to situations where the locations of level 2 and level 3 change very frequently. LISP and TRILL could be gradually and essential to facilitate the emergence of advanced services Clouds at least regionally today, allowing management of 4G mobility and dynamic migration of servers with unattainable using historical flow technologies, and a significant improvement in Quality User Experience « clouds ». It is interesting to note that LISP and TRILL currently capture more interest from small operators to access distributed very Clouds, on many sites, than conventional operators following the contrary a monolithic approach Cloud, with few sites datacenters.

What remains is to define the coupling between these two protocols under a hypervisor high diversity distributed architecture that is sufficiently more effective than solutions with low diversity. Who says efficiency, said service continuity, reliability and availability IP.

To increase reliability and availability of the Cloud, it seeks solutions that can manage a strong geographic diversity and a high mobility of virtual machines, while ensuring continuity without interruption in a world TCP-UDP/IP. Under the cloud consortium, we aim to achieve higher levels of availability and reliability customizable to customer needs, type « carrier grade » (99,999%) and beyond, which can be secured through a strongly divided over a large number of sites hypervisor, supported by a control plan new generation.

Stefano Secci – LIP6 – consortium nuage

cloud is a research and development consortium composed of the following members :

• Non Stop Systems, Specializing in secure infrastructure solutions SSII

• CELESTE, ISP, designer of a green data center

• Oodrive, specialist professional backup and sharing files online

• DotRiver, eco-innovative virtualization solution and centralized workstations

• Alphalink, private network operator and telephony over IP

• Network Consulting, Host – dedicated servers and SaaS applications

• New Generation SR, consulting corporate social responsibility

• LIP6 laboratory teams REGAL and the PHARE, University Pierre and Marie Curie, Paris