Connectivity issue during failover test

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Connectivity issue during failover test

We have three VPC and Transit Gateway  along with Gateway Load Balancer deployed. Two VM series deployed in two AZs and We have test VPC that spans in three AZs Gateway Both FW registered in Target Group of Load Balancer using IP address. When FW are deployed interface swap is not used. Routes are configured as network diagram.

 

I can ping from test vpc1 to test vpc2 and vice versa when both FW are up and running, BUT when I do failover test by shutting down one of the FW, some test VPC cannot ping to other Test VPC like if I ping from test VPC1 to two VMs on other Test VPC running on two different AZz, one connection drops during when shutting down one FW, i.e. Gateway Load Balancer is not transferring connection other FW which is running, so have following questions:

 

When deploying FW behind Gateway Load Balancer in AWS, is it mandatory to swap-interface during boot-strap ?Palo-post-image.JPG

 

 
 

 

 

1 ACCEPTED SOLUTION

Accepted Solutions

L2 Linker

Have you enabled Appliance mode on the TGW Attachment and cross-zone load balancing on the GWLB?

 

Interface swap is not required but recommended when using automation script or autoscaling.

View solution in original post

2 REPLIES 2

L2 Linker

Have you enabled Appliance mode on the TGW Attachment and cross-zone load balancing on the GWLB?

 

Interface swap is not required but recommended when using automation script or autoscaling.

View solution in original post

After implementing cross-zone load balancing it fix issue. 

Thanks 

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