What is the right solution for my company ?
What are my real needs today and in the near future ?
Can I afford a few hours outage or will this endanger my business ?
Quendra helps your organization to make the right choice by giving a clear view of what the market offers and fully match your business needs.
A Wide Area Network (WAN) is a private network connecting the LAN of your different offices, spread between multiple cities / countries.
The world’s most popular WAN is based on the Internet, by use of IPSec tunneling. The second most popular one is based on MPLS (Multi Protocol Switching).
More recently, SDWAN appears as an alternative to MPLS based WAN’s.
Let us look at the main factors which have enabled MPLS VPN Networks to become more favourable for organizations and the growing offers and demands for SDWAN solutions.
Any packet coming to the Label edge routers (from individual locations – source, to the service provider MPLS network) are encapsulated with an MPLS label which is used to identify it and route it through the MPLS network. This label is discarded when the packet comes out of the MPLS network back to individual locations – destination.
Since the MPLS packets are being added at the MPLS Edge routers, it is possible to set the path that the traffic will have to take through the network. More specifically, each class of traffic (like data, voice, video etc) can be set individual performance characteristics.
Since MPLS network enables traffic engineering, it is possible to send (for example) – data traffic over a lower priority path and real time delay sensitive voice/ video packets over a high priority/ lesser used/ shorter path. This enables network convergence (The Wide Area Network becomes more suitable for introduction of new services like voice, video, multicast traffic, hosting etc).
An MPLS core network is generally designed and built to overcome individual hardware (router) faults or line disconnections. In such cases, the data is re-routed through the next optimum path with a failover time of 50 ms or lesser. Even the last mile connections can be backed up using another access technology, depending upon the options with the service provider.
MPLS networks are easy to deploy as the technology is build in the Telecom Operator network. You will use your internal IP range to route your traffic from one site to (an)other(s). New deployment and additional sites are then easy if your organization is well structured with your internal IP addressing and routing.
The costs are today very attractive allowing all type of organization to take advante of this type of solution.
It has been widely demonstrated that MPLS based VPN networks have met or exceeded all of the security characteristics of a comparable layer 2 based VPN such as Frame-Relay or Leased Lines. Today, MPLS is used to vehicle most of the financial traffic worldwide.
This is an important advantage compared to Layer-2 network. MPLS can use every type of Access technology, such as xDSL, Wireless, fibre,.. allowing to build cost effective and redundant private network solutions.
Today, wide area networks (WANs) are becoming more and more complex: more users, more sites, more applications to share between sites, … . Moreover, virtualization and cloud computing (private or public cloud services) are driving more and more traffic over wide area network (WAN) links. These trends require a shift in the way we share the access to such centralized resources as applications, servers, storage and management systems by geographically dispersed users, whether they are in a branch office, connecting over the internet or subscribing to an application provider.
A successful deployment of centralized services requires that the user experience (application response time and data transfer time) is as close as possible to what users would experience accessing the same resources over a local area network. The WAN’s inherent latency issues and the cost of network bandwidth are major obstacles to business managers’ efforts to deploy these new computing paradigms in a timely and cost-effective manner. WAN optimization technology is a fundamental component and a requirement for the successful delivery of centralized services
Vendors have different ways to approach WAN optimization. Quendra will help you to have a better view of the different technologies and how they could benefit your organization.
SD-WAN is an acronym for Software-Defined Wide Area Network. The idea behind it is to control and manage a WAN on a software basis, to allow better flexibility and cost control.
The key application of a SD-WAN is to use lower-cost Internet accesses to build partially (or wholly) a private WAN, replacing more expensive MPLS based WAN.
In a nutshell, we replace in a “one box solution” all network functionalities, which were hardware based (routing, firewall, optimization, compression, etc) and we create IPSec tunnels between these edge boxes (servers). These functionalities can be controlled on-demand, by the end-customer, via a web interface, enabling great flexibility and control of its WAN.
SDWAN find its roots in the servers virtualisation, where companies are able to build an additional server in minutes at a competitive price. SDWAN answers also to company needing access to Cloud based solutions, using a local internet breakout, instead of a centralized Internet gateway, by the mean a more expensive MPLS tail.
SDWAN has 3 network access flavours:
Today, when we are talking about L-2 network, we are referring by default to Ethernet. Indeed, Leased Lines and Frame relay networks are progressively disappearing to the benefit of Ethernet.
The Ethernet market is going through the transition that the IP VPN market underwent a few years ago. Carriers have rolled out the offerings and are making them locally, nationally and internationally available. There are nevertheless several key issues facing carriers, such interworking between operators and access technology limitations.
For instance, Ethernet services are differently rolled out by service providers.: one category of operators are delivering Ethernet services based on MPLS (the service is then called “VPLS”), other ones on ATM and some are delivering the service on a end-to-end Ethernet basis.
The awareness of different Ethernet technology is of upmost importance when deploying Layer-2 network. Indeed, this leads to multiple consequences on your traffic which can make fail your project.
Quendra will help you by giving a clear view on the different deployed Ethernet technologies and the advantages and disadvantages of each one.
There are multiple advantages of using Ethernet service for a company. Here are the main ones:
The opportunity is to integrate services that now travel on a common access technology. There is no more “technical barrier” between LAN and WAN. In the future, the “bandwidth barrier” between LAN and WAN will also probably disappear.
On the other hand, this network needs to be managed by your organization. You will need then to have the sufficient knowledges and ressources to deploy and maintain such a network.
Ethernet can be delivered over ATM, over SDH, over DWDM, over dark fiber and even over MPLS. In order to deliver very high capacity and very low latency, the best way is to do it over WDM (see hereafter) or over dedicated fiber (dark fiber). Depending of the operator and the technology used, Ethernet capacity can be delivered up to 10 Gbps, at the national or international level.
This technology is typically used to get a very high capacity with a very low latency between two locations.
WDM, Wavelength-Division Multiplexing, is a technology which multiplexes a number of optical signals onto a single optical fiber by using different wavelengths (colors) of laser light. This technique enables bidirectional communications over one strand of fiber, as well as multiplication of capacity. A WDM platform (DWDM or CDWDM) can then deliver multiple high capacity services (Ethernet, Fiber Channel, …).
This technology is typically used to have multiple high capacity services between two locations.
Your company must be protected against the prohibitive cost of downtime and you must ensure constant access to their critical server and storage systems. As you grow and evolve, your IT infrastructure, and their service and support requirements, become more complex. They are challenged with supporting increasingly heterogeneous environments, while reducing support costs.
Quendra consultants help you to define the best strategy for your Business Continuity or Distaster Recovery and IT centralization s infrastructure needs. We help you to get the right balance for your business by checking with you the key drivers of your company: cost control, speed to market, risk management and IT optimization. Is pure collocation fits your business needs and reality or is better to out-task a part or your full infrastructure ? Is cloud computing or Dedicated hosting environment the best alternative for your company ?
Quendra experts will help you to have a better understanding of what the market can offer and what are the solutions which could help you to sustain your company growth and viability.