Here's the shortest explanation I can give.
We have a client in regional Australia with a main office and branch office. There is a linux based server in their main office which runs their main application and sends print jobs via a linux command to network printers.
There is a VPN running between the sites to allow remote printing and interface to the app.
Everything was running well on ASDL2+, but Telstra kicked them off the copper network unnecessarily. Even though they reconnected the copper lines, they lost their ADSL2+ ports and ADSL1 speeds are not sufficient.
We have set them up on NBN Wireless. Connections, which work, but suffer massive time of day based congestion and reliability issues.
The sales team decided that a second NBN Wireless link at each site would help and connected them unceremoniously without consulting the tech team. Besides the VPN, there was only the default firewall rules meant that traffic was load balanced across the two WAN connections.
This immediately created a degradation in VPN performance. When I disabled the second WAN connection it returned to normal.
I think the main issue would be the asymmetric routing caused by load balancing, but we didn't have any real time for testing etc. due to the impact it was having
I am after suggestions on the optimal way to configure this setup?
2x WAN connections at each site
Need a VPN link between the sites
I am going to give it some thought over the weekend, just looking to what the community suggests
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