Hey everyone! I'm looking for some guidance on setting up a site-to-site VPN tunnel. I've got a Cisco setup on-site and I'm trying to connect it to a cluster at OVH while also using my AWS profile. I've attempted to use the AWS Transit Gateway for this, but I've hit a wall.
After setting up the VPC, subnets, and gateway, I thought I followed everything correctly, and the tunnel to OVH came up just fine. The Cisco tunnel did too, but whenever I try to access the OVH infrastructure from the Cisco side or vice versa, I'm unable to reach the hosts.
To top it off, I discovered that after a day, the tunnels went down because the inside and outside IPs changed on me. I'm really in need of a good tutorial or guide to help me through this, if anyone has recommendations!
3 Answers
Just a heads-up, using the Transit Gateway can get pricey if you're transferring a lot of data. It's also worth checking the routing on your OVH infrastructure, your Cisco setup, and AWS to make sure everything's aligned. You might be missing some routes!
Have you checked out the AWS getting started guide? It's got some helpful steps for setting up VPN connections that might clear things up for you.
Not exactly my use case, but I appreciate the suggestion!
I found a great demo on GitHub that could really help you out. It covers hybrid BGP VPN setups which might be similar to what you need. Check it out!
Thanks! I’ll definitely look into this.
I’ll double-check those routes to ensure they're set up correctly. Thanks for the tip!