We have around 6 different IPSEC tunnels configured on the PAN with AWS. However we are trying to troubleshoot an issue, which we think could be related to as asymmetric routing. For e.g if traffic is send from one tunnel, and AWS sends it via the 2nd tunnel, the PAN will be dropping these.
So we have temporary disabled one of the active tunnels - we have tried enabled ECMP on the palo alto, don't think this is working either.
We have configured the tunnel on different security zones, so not sure if this is correct way?
Anybody have any experience with setting up 2 redundant tunnels with AWS, that works. The suggested options are enabling BGP - which we don't have experience with.
in order for ECMP to work it must be configured on both ends and at this stage it is not supported in the AWS VGW unless something has changed.
in Github for our transit VPC architecture we do have a manual deployment guide. In that manual deployment guide it will walk you through
1. How configured VPN tunnel from PAN with AWS
2. How to configure BGP for the transit VPC architecture
The use case may not be completely the same but it should be close enough to get you going. Here are the links
Here is a link on how to propagate the default route after you have configured BGP
Hope this helps.
Thanks JPerry, for taking the time to suggest the 2 options. Am fairly new to the aws world, so excuss me if i use the wrong terminology. So from what I imaging, the transit vpc is using a VM series palo alto FW's in the AWS enviroment to connect to the on prem Palo alto's. So this will need to be an investment from our end to purchase the licences for this series. Is that correct.
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