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neif [2016/04/28 14:48]
Andre Hafner
neif [2016/11/15 13:27] (current)
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 ====== Network for Innovation and Research (NeIF) ====== ====== Network for Innovation and Research (NeIF) ======
  
-{{ :​belwue-neif_01.png?​mplink&500 |}}+{{ :​belwue-neif_01.png?​nolink&500 |}} 
 + 
 +===== Use-Cases ===== 
 + 
 +  - **Point-to-Point:​** in the standard use-case NeIF-links are used to build a layer-1 point-to-point connection between two participants. The Belwü muxponders, residing at each university in Baden-Württemberg are used as entry and exit points. Such direct links can be used to connect institutes of a university to perform specific experiments or to connect the university'​s datacenter to optimize user experience by increasing bandwidth for certain services. 
 +  - **Latency-Loop:​** since researchers asked about methods for creating high latency in an experimental environment the network operating group presented a concept of multiple, serial connected NeIF-links. In December 2015 three links between the participating universities were connected to each other to get a ring-like layer-1 connection. Sending packets from Ulm via Karlsruhe to Tübingen and onwards to Ulm (total distance of 534 km according to((http://​www.belwue.de/​fileadmin/​belwue/​topologie_bilder/​2014-LEITUNGEN_mitLaengen.pdf))) we achieved a round-trip-time (RTT) of about 6 milliseconds. With the current setup we can have up to four of these loops in parallel. When connecting them serially it's possible to create a layer-1 connection of about 2136 kilometers distance resulting in a 24 ms RTT. We plan to maximize that construct in the futures by spanning the loop all across Baden-Württemberg including the universities in Heidelberg, Freibug and Konstanz. That would result in a distance of about 1400 kilometers per loop, achieving a total distance of over 7000 kilometers when connecting the maximum of five loops in serial. 
 +===== Current Links ===== 
 +The following table shows the current configuration of NeIF-Links:​ 
 + 
 +|            ^ Port#01 ^ Port#02 ^ Port#03 ^ Port#04 ^ Port#05 ^ Port#06 ^ Port#07 ^ Port#08 ^ Port#09 ^ Port#10 ^ 
 +^ Karlsruhe ​ | TU#03   | UL#02   | --      | TU#02   | UL#04   | UL#09   | UL#10   | TU#09   | TU#10   | --      | 
 +^ Tübingen ​  | UL#01   | KA#04   | KA#01   | --      | UL#05   | Campus ​ | UL#08   | UL#07   | KA#08   | KA#09   | 
 +^ Ulm        | TU#01   | KA#02   | --      | KA#05   | TU#05   | --      | TU#08   | TU#07   | KA#06   | KA#07   | 
 + 
 +The following graphic also depicts the configuration:​ 
 + 
 +{{ :​neif-links.png?​direct&​600 |}} 
neif.txt · Last modified: 2016/11/15 13:27 (external edit)