diff --git a/SCOR/802_1x.md b/SCOR/802_1x.md
index 806fd4f..0a330d0 100644
--- a/SCOR/802_1x.md
+++ b/SCOR/802_1x.md
@@ -1,6 +1,23 @@
 # Understanding 802.1X and TrustSec Software-defined Segmentation
 
-In the ever-evolving landscape of network security, understanding and implementing robust security protocols is paramount. Among these, 802.1X and Cisco TrustSec, which involves software-defined segmentation, play a crucial role in securing network access and data transmission. This article delves into the intricacies of these technologies, elucidating how they contribute to a more secure network environment.
+In the ever-evolving landscape of network security, understanding and implementing robust security protocols is paramount. 
+
+Among these, 802.1X and Cisco TrustSec, which involves software-defined segmentation, play a crucial role in securing network access and data transmission. 
+
+```
+User Device (Supplicant) <----> Authenticator (Access Switch/Point) <----> Authentication Server (RADIUS)
+
+1. [Supplicant]         ---- EAPOL-Start ---->        [Authenticator]
+2. [Authenticator]      ---- EAP-Request/Identity --> [Supplicant]
+3. [Supplicant]         ---- EAP-Response/Identity -> [Authenticator]
+4. [Authenticator]      ---- EAP-Response/Identity -> [Authentication Server]
+5. [Authentication Server] ---- EAP-Request (Challenge) ----> [Authenticator]
+6. [Authenticator]      ---- EAP-Request (Challenge) ----> [Supplicant]
+7. [Supplicant]         ---- EAP-Response (Challenge-Response) ----> [Authenticator]
+8. [Authenticator]      ---- EAP-Response (Challenge-Response) ----> [Authentication Server]
+9. [Authentication Server] <Decision (Success/Fail)> [Authenticator]
+10. [Authenticator]     <Controls Port Access Based on Decision> [Supplicant]
+```
 
 ## What is 802.1X?