The Coolhousing datacentre network can be called a multivendor solution – a combination of Juniper and Cisco brand technologies. The datacentre infrastructure combines the best features from the “Spine & Leaf” and “STP” topologies. The “Spine & Leaf” topology is characterised by high speed, predictability, scalability, and efficient communication. All the network routes that are used by the Coolhousing datacentre topology are configured in an active state using the Equal-Cost Multipathing (ECMP) method. This configuration allows using all the connections at the same time, while the network remains stable and loop-free. Thanks to such adjustment, the datacentre infrastructure is fully redundant and operated in a high-availability (HA) mode. In addition, the presence of the Spanning Tree Protocol (STP), which is also part of the datacentre network, makes it possible to immediately reroute the traffic over another route in the event of a major failure or breakdown of multiple active elements of the network.


Spine & Leaf topology

Network infrastructure

Three optical paths independent of one another lead in two different directions from the Coolhousing datacentre on Vinohradská Street. Connectivity to the datacentre is provided by passive elements, through three geographically separated points (T-Mobile THP, DC Nagano, CEColo), thanks to which we can offer our customers complete geographical redundancy of connectivity.


The Coolhousing datacentre has separate links available not only into the NIX.cz neutral exchange point, FENIX secure network, but also into the Slovak nodes NIX.sk and SIX. Last but not least, it has transit connectivity available, ensured by the providers Dial Telecom and Core Backbone with full BGP tables, support for communities and blackholing. Of course, the providers of transit connectivity are divided in such a way that their services are available to all the datacentre routers and, at the time same, full redundancy is ensured.


Our network is directly connected in to NIX.cz, FENIX, SIX, DE-CIX, AMS-IX and NIX.sk.


Network structure

Along with this infrastructure upgrade, the Anti-DDoS/scrubbing centre is newly operated at the level of connectivity providers. In this way, data traffic is cleaned as early as at suppliers, and the Coolhousing datacentre is capable of countering attacks in the order of hundreds of GB.


Coolhousing s.r.o. operates its own Internet autonomous system under registration No. AS35592, it is a member of the RIPE, NIX and FENIX groups, and its network is directly connected to the Internet exchange points NIX.cz, NIX.cz, FENIX, SIX and NIX.sk.

  • Intel
  • Cisco
  • HP
  • Ripe
  • Nix.cz
  • AMD
  • EATON
  • Juniper
  • Microsoft partner
  • Supermicro

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  • "We have been cooperating with Coolhousing for several years.


    For the entire period we have been operating without problems systems for travel insurance for major Czech and foreign financial companies. Our systems run uninterrupted without outages. We especially appreciate the option of individual negotiations for almost anything. Unlike other providers, Coolhousing does not have a problem with this."

  • "We began cooperating with Coolhousing in 2011. At the time, we were looking for only a reasonable and perhaps temporary solution with a dedicated server for a favourable price. In 2 years of cooperation, we have found Coolhousing to be a high quality business partner, not only because of its provided service, but also its customer and technical support. The company responds very quickly to all questions and requests. Therefore, the expected temporary solution has become a permanent solution, thanks to the quality and price of services!"

  • "I'm not searching any more. For 10 years, I searched for and switched between different companies, which enabled operation of our system in our required extent.Sooner or later, a serious operating problem appeared with each company. In 2009 I discovered Coolhousing. Coolhousing's services and approach are absolutely excellent and problem-free. I would like to thank everyone who has participated in the running of the company for their willingness, professional approach and cooperation."

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