Differences

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--- neif [2016/04/28 10:07]
Andre Hafner created
+++ neif [2016/11/15 13:27] (current)
@@ Line 1: / Line 1: @@
 ====== Network for Innovation and Research (NeIF) ======
+{{ :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 |}}