diff --git a/documentation/System_Deployment.md b/documentation/System_Deployment.md
index d551421c..7cf6872a 100644
--- a/documentation/System_Deployment.md
+++ b/documentation/System_Deployment.md
@@ -125,10 +125,11 @@ Please just add issues to this project with hints or directly [contact me](https
   ```
   osism apply scs_all_nodes -l 'all:!manager'
   ```
-* Check if the ntp time setup is correct
+* Check if the ntp time and the network setup is correct
   (checks pre installation conditions like proper time sync and network connectivity)
   ```
   osism apply scs_check_preinstall
+  osism validate ceph-connectivity
   ```
 
 ## Deploy the infratructure services
diff --git a/environments/custom/roles/scs-landscape-nodes/files/scripts/scs_check_network_connectivity.sh b/environments/custom/roles/scs-landscape-nodes/files/scripts/scs_check_network_connectivity.sh
index cc95110a..a88eadcc 100755
--- a/environments/custom/roles/scs-landscape-nodes/files/scripts/scs_check_network_connectivity.sh
+++ b/environments/custom/roles/scs-landscape-nodes/files/scripts/scs_check_network_connectivity.sh
@@ -12,7 +12,7 @@ done < <(sudo vtysh -c "show ip bgp summary"|awk '/^enp/{if ($10 !~/[0-9][0-9]*/
 
 while read node
 do
-   # MTU 9100 - (8 bytes for ICMP headers and 20 bytes for Ethernet header)
+   # MTU 9100 - (8 bytes for ICMP headers and 20 bytes for IPv4 Ethernet header)
    ping -M do -c ${1:-2} -s $((9100 - 28)) $node
    if [ "$?" != "0" ];then
       failed="PING:$node $failed"