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Enterprise Networking

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Enterprise Networking

IWAN is a technology known as Intelligent WAN. It is a very interesting combination of several well-known technologies which is used by multi-branch companies.

In the search for savings, companies are increasingly commonly building their WAN networks using Internet connections. Sometimes this involves the secondary link and sometimes both links. In these times, an Internet link does not have to be inferior, especially if we use the IWAN solution. In the IWAN architecture we use well known solutions and technologies created many years ago, which work together in order to provide optimal conditions for the operation of business applications.In the search for savings, companies are increasingly commonly building their WAN networks using Internet connections. Sometimes this involves the secondary link and sometimes both links. In these times, an Internet link does not have to be inferior, especially if we use the IWAN solution. In the IWAN architecture we use well known solutions and technologies created many years ago, which work together in order to provide optimal conditions for the operation of business applications.

IWAN is a combination of DMVPN, PfR (Performance Routing), application-level QoS and WAAS.

The IWAN idea is based on the fact that DMVPN tunnels are compiled from all links in the company’s branch connecting to the corporate headquarters, regardless of whether these are leased links, ordinary links with an Internet connection or GPRS/LTE, etc. We put all the available links into one bag, we secure the traffic using DMVPN, we obtain comfortable GRE interfaces, and the router in the branch decides (PfR mechanism) which link at any given time is used to send traffic to the headquarters depending on
e.g. the QoS bits, the level of use of links or the link parameters (jitter, delay, etc.), possibly encoding something (WAAS) in order to save
bandwidth of the WAN links.

The advantages of the solution of a “common bag links” is the native support for the simultaneous use of all the available WAN links in the Active/Active mode (IPC-Intelligent Path Control). The decision which link is used to send the data belongs to the routers and can change dynamically.

The parameters of the WAN links are constantly monitored for load, delays, etc. and the Performance Routing technology is able to distribute the application traffic dynamically per link, depending on the configured policy. From the business point of view, in this way we will always ensure adequate bandwidth and other transmission parameters for critical applications.


Applications are recognized using Application Visibility & Control technology which has a continuously improved engine detecting more than 1000 different applications.



At any time, we can shift non-critical traffic, freeing up space for line-of-business applications, or even completely block certain categories of traffic. Everything is carried out in real time, depending on the current situation on the links and the amount of traffic generated by the users.



Without IWAN that could be partly obtained by using static routes, but only in the L3 layer and not at the application level as in the case of IWAN. In addition, this was not a 100% dynamic solution.


 

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Thanks to IWAN we obtain control over the links, visibility in relation to the applications and the degree of their use of links and we are able to create traffic policies reflecting the business objectives of our organization.

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IWAN is a way to reduce the cost of maintaining the WAN network while simultaneously ensuring optimal operating conditions for the applications. It also provides the possibility of running additional services and applications that have thus far been impossible to use on the congested WAN links.

 


Additional advantages for network administrators are:
  • Less VPN configuration (DMVPN only)
  • Easier routing configuration