diff --git a/SwitchCisco.md b/SwitchCisco.md
index 36a3571c..6afedb46 100644
--- a/SwitchCisco.md
+++ b/SwitchCisco.md
@@ -1633,7 +1633,7 @@ Switch(config-schedule)# time daily 01:15
 
 ### VPC : Virtual Port-Channel
 
-Ressource : <https://www.packetcoders.io/what-is-cisco-vpc-virtual-port-channel/>
+Ressources : <https://www.packetcoders.io/what-is-cisco-vpc-virtual-port-channel/>, <https://www.networklife.net/images/sheets/Nexus-VPC.pdf>
 
 * Explication globale :