Issue-1 Connectivity was not working through Palo Alto firewall Hosted in Azure Cloud.

 Issue Description - Connectivity was not working from Datacenter to Cloud VDI environment.

Traffic was going through Express route to Palo Alto Firewall which was hosted in Azure Cloud.

Issue Resolution- We verified and found Azure Load balancer Health prob was down as Firewall VM Health prob port was down. We fixed the Health prob port service and after that Azure Load Balancer started passing the traffic.

Issue-2 Observed Packet drops from Datacenter to AWS Cloud Connectivity.

 Issue Description- We found packet drop from Datacenter to AWS cloud. Connectivity from DC to Cloud was through Site to Site Tunnel. DC side we were using FortiGate and AWS End we were using AWS Site to Site Tunnel service.

Resolution - While checking we found that CPU Utilization was high in Datacenter FortiGate Firewall.

After fixing the CPU utilization issue , Traffic was going without packet drops.

Issue-3 Connectivity issue within the Same segment of Oracle Cloud Infrastructure(OCI) VMware environment.

 Issue Description - We were not able to connect a VM which was in same segment of Oracle Cloud Infrastructure VMware Environment.

We checked multiple check-points and found root cause in VM Operating system route table.

After fixing the issue connectivity was working fine.

Issue-4- High Latency when traffic is passing from FortiGate Firewall in Azure Cloud.

 

To Resolve this issue we had followed below actions.

1- We Increased the FortiGate VM size from D series to F series.

2- We Enabled Accelerated networking on FortiGate VM interfaces.