diff --git a/IPAM-Structure.-.md b/IPAM-Structure.-.md
index c3b2051..a35b775 100644
--- a/IPAM-Structure.-.md
+++ b/IPAM-Structure.-.md
@@ -21,7 +21,7 @@
 
 ### C. Devices
 
-| Device | IPv6-address| VLAN | remark|
+| Device | IPv6-address| VLAN | Notes |
 | ---------- | ----------------------- | ---- | ----------------------- |
 | Client1    | `2001:db8:1000:10::`  | 10   | DHCPv6 & Stateful                |
 | Client2    | `2001:db8:1000:20::`  | 20   | DHCPv6  & Stateful                |
@@ -53,3 +53,18 @@
 |Router_Lübeck| `2001:db8:2000:ffff::1/128` | `2.2.2.2` | G0/0/0.30 & G0/0/0.40, Serial0/1/0 &  Serial0/1/1 & Serial0/2/0 |
 | Router_Berlin | `2001:db8:3000:ffff::1/128` | `3.3.3.3` | G0/0/0.50, Serial0/1/0 &  Serial0/1/1 & Serial0/2/0|
 | Router_Munich | `2001:db8:4000:ffff::1/128` | `4.4.4.4` | G0/0/0.60, Serial0/1/0 &  Serial0/1/1 & Serial0/2/0 |
+
+### F. Trunk-Verbindungen
+
+| Switch Port | Location | Connection         | VLANs  | Notes                                 |
+| ----------- | -------- | ------------------ | ------ | ------------------------------------- |
+| Gi1/0/1     | Hamburg  | Switch → Router HH | 10, 20 | Trunk to Router Hamburg (VLANs 10/20) |
+| Gi1/0/2     | Hamburg  | Client 1           | 10     | Access port for Client1           |
+| Gi1/0/3     | Hamburg  | Client 2           | 20     | Access port for Client2        |
+| Gi1/0/1     | Lübeck   | Switch → Router HL | 30, 40 | Trunk to Router Lübeck                |
+| Gi1/0/2     | Lübeck   | Client 3           | 30     | Access port for Client3       |
+| Gi1/0/3     | Lübeck   | Client 4           | 40     | Access port for Client4      |
+| Gi1/0/1     | Berlin   | Switch → Router B  | 50     | Trunk to Router Berlin                |
+| Gi1/0/2     | Berlin   | DNS/Web Server     | 50     | Access port for  Server_Berlin       |
+| Gi1/0/1     | Munich   | Switch → Router M  | 60     | Trunk to Router Munich                |
+| Gi1/0/2     | Munich   | Web Server         | 60     | Access port for Server_Munich       |