The Coolhousing datacentre network is a multivendor solution - combination of Juniper (for routing) and Cisco (on the access layer) brand technologies. Everything is interconnected in loops via PVST (Per Vlan spanning tree). Individual elements of the network are linked up by a four-gigabyte or ten-gigabyte connection. Load is completely distributed and it steadily stays under 30% of uplink.


The main routing is ensured by Juniper MX routers in a redundant setup. From the server at Vinohradská, as well as from the server in CEColo / Sitel, the optical paths are leading in two directions. The direction Datacentre T-Mobile/GTS Novera is the primary route, and the Datacenter CEColo and Nagano are connected as secondary route. Connectivity to the Datacenter is provided by passive elements and leads through three geographically separated points; therefore, it can offer a complete redundancy of the connectivity and independence from one single access point / location.


Both directions, DC GTS Novera and DC CEColo, have available separate 10Gbps links to the NIX network, and transit connectivity is ensured via Dial Telecom and Core Backbone connections with full BGP tables, support for communities and blackholing. The providers of transit connectivity are again divided, so that full redundancy can always be ensured.


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


Network structure

The connection between Coolhousing and Sitel is backed up via a private VLAN through NIX.cz.


Coolhousing s.r.o. operates its own Internet autonomous system under registration No. AS35592, and it is a member of the RIPE, NIX and FENIX.

  • 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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