Network

[network monitor]

[speed test IPv4]

[speed test IPv4]

The contemporary CESNET2 network is built around the DWDM core. We deployed our first DWDM line providing more 10 Gbps channels in December 2004. One year later it has been enhanced to a DWDM backbone ring connecting Prague, Brno, Olomouc and Hradec Kralove. We continuously expanded the DWDM core to further cities up to the current rich backbone. It uses a mixture of commercial equipment and optical devices developed by CESNET.

Remaining backbone lines of the CESNET2 network are based on the mixture of Ten-Gigabit and Gigabit Ethernet and Packet Over SONET (POS). It ensures very high throughput (bandwidth of all core lines lies in the range of gigabits per second).

The essential idea of our design is to build the backbone network in small rings encompassing no more than four cities (points of presence). Such topology provides redundant network offering small hop counts and delays.

Topology valid since June 2010
(detailed map: GIF 120 KB, PDF 110 KB)

[Topology map]

The network has following independent international connections:

In addition to these international lines, external connectivity of CESNET2 is enhanced by powerful peering connections:

Network provides multicasting capability and is a part of the MBone network. Videoconferencing services based on the MBone technology are offered to the network users. IP version 6 is provided as a standard service.

More information about the network, its features and development is available in our technical reports.

Related information:

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