diff --git a/.obsidian/workspace b/.obsidian/workspace
index ac700be..2e6d8da 100644
--- a/.obsidian/workspace
+++ b/.obsidian/workspace
@@ -88,14 +88,14 @@
   "active": "bc6e8ad9aa0f44c3",
   "lastOpenFiles": [
     "School/Analyse/Network Hardware.md",
+    "School/Analyse/Computer Networks.md",
     "School/Analyse/Layers/3. Network Layer.md",
+    "School/Analyse/Layers/4. Transport Layer.md",
     "School/Analyse/Layers/2. Datalink Layer.md",
     "School/Analyse/Network Types.md",
     "School/Analyse/Network Software.md",
-    "School/Analyse/Computer Networks.md",
     "School/Analyse/Images/distortion.png",
     "School/Analyse/Images/noise-signal.png",
-    "README.md",
-    "School/Analyse/Layers/4. Transport Layer.md"
+    "README.md"
   ]
 }
\ No newline at end of file
diff --git a/School/Analyse/Images/routers-example.png b/School/Analyse/Images/routers-example.png
new file mode 100644
index 0000000..d7cfba5
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diff --git a/School/Analyse/Network Hardware.md b/School/Analyse/Network Hardware.md
index 0af9273..594ffe0 100644
--- a/School/Analyse/Network Hardware.md	
+++ b/School/Analyse/Network Hardware.md	
@@ -22,9 +22,23 @@ They read the frame of a incoming message, extract the destination MAC Address a
 
 ## Routers
 Router is a member of multiple networks.
+
+![[routers-example.png]]
+
 For each connection to a network a routers uses a network interface card (NIC) and a IP address.
 
 This way a router can have multiple IP addresses.
 
+Each connection is identified by a interface, label or an address.
+
+Example of a routing table:
+![[routing-table.png]]
+
+### Updating router tables
+
+Routers are responsible for updating routing tables themselves.
+
+When a router detects a change in connections, it immedia
+
 
 
diff --git a/routing-table.png b/routing-table.png
new file mode 100644
index 0000000..360635d
Binary files /dev/null and b/routing-table.png differ