From 1bf64e61ad0c666e9494201ad779a74a8be4e272 Mon Sep 17 00:00:00 2001
From: Martin Stiemerling <martin.stiemerling@h-da.de>
Date: Wed, 16 Sep 2020 15:57:56 +0000
Subject: [PATCH] Update 01-introduction.md

---
 documentation/design/01-introduction.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/documentation/design/01-introduction.md b/documentation/design/01-introduction.md
index 0253e3994..a30f106c6 100644
--- a/documentation/design/01-introduction.md
+++ b/documentation/design/01-introduction.md
@@ -20,6 +20,14 @@ Some unsorted thoughts the be ordered yet:
 * core of controller should be kept simple/lean, i.e., just the basic primitives
 * core should be extended by modules to add functionality beyond basics
 * modules should be loaded (or unloaded) during runtime of the controller core
+* reuse existing software if possible and if those are stable, i.e., documented, maintained etc,  on a long time
 
 
 ## Structure of this Memo
+
+## Use Cases to be considered
+
+The development of a general purpose SDN controller is not the primary goal at this early stage of the project.
+Instead there are two use cases to be considered in the implemenation works that are currently ongoing:
+* Primary: optical domain SDN-controller for the CoCSN project
+* Secondary: SDN-controller for our local labs to manage an Ethernet-based lab environment
-- 
GitLab