NDT-DEV email list created

Revision: 421
Author:   

Date:     Wed Jul 27 06:57:26 2011
Log:      Added 'Logical Model' section.
http://code.google.com/p/ndt/source/detail?r=421

Modified:
 /wiki/NDTProtocol.wiki

=======================================
--- /wiki/NDTProtocol.wiki      Wed Jul 27 06:15:21 2011
+++ /wiki/NDTProtocol.wiki      Wed Jul 27 06:57:26 2011
@@ -31,6 +31,38 @@
 We believe that NDTP-Control protocol can effectively be used to implement  
not only new types of clients, but also can be treated as a generic  
framework to create and combine with each other completely new NDTP-Tests  
protocols.

 === Logical Model ===
+
+We can distinguish several different roles on both NDTP-Control and  
NDTP-Tests levels. Specifically, we define the following:
+
+|| Session-Sender || The sending endpoint of a NDTP-Tests session. ||
+|| Session-Receiver || The receiving endpoint of a NDTP-Tests session. ||
+|| Server || An end system that manages NDTP-Control and NDTP-Tests  
sessions, performs the specific tests needed to determine what problems, if  
any, exist. The server process then analyzes the test results and returns  
these results to the client. ||
+|| Client || An end system that initiates requests for NDTP-Tests  
sessions, triggers the start of a set of sessions and receives tests  
results. ||
+
+Different logical roles can be played by the same host. For example server  
machine is a session-sender in the S2C throughput test, while it is a  
session-receiver in the C2S throughput test.
+
+For example, please look at the figures describing two main NDTP-Tests  
protocols:
+
+ * C2S throughput test
+
+{{{
+       +----------------+                    +------------------+
+       |     Client     |<---NDTP-Control--->|     Server       |
+       |                |                    |                  |
+       | Session-Sender |----NDTP-Test------>| Session-Receiver |
+       +----------------+                    +------------------+
+}}}
+
+ * S2C throughput test
+
+{{{
+       +------------------+                    +------------------+
+       |     Client       |<---NDTP-Control--->|     Server       |
+       |                  |                    |                  |
+       | Session-Receiver |<---NDTP-Test-------|  Session-Sender  |
+       +------------------+                    +------------------+
+}}}
+
 == Protocol Overview ==
 == NDTP-Control ==
 == NDTP-Tests ==