building new network using two CCRs and two unequal ISPs, have read all related topics on this forum, wiki, but could not find similar setup.
Main idea is to have L2TP/IPSec servers with same configs and duplicated user credentials on both routers. High availability is crucial in my case. Purpose of VPN is to only feed internet to our clients through out ISP channels, something like anonymous proxy server.
Also there will be two servers for web hosting and virtualization services (see picture below).
Ideally, I would like to provide only one hostname to all out VPN clients to connect to, then balance load on routers somehow.
Regarding ISPs, I dont have both connection yet, but pretty sure they will support BGP if needed. Each will provide Public IP /28 subnets.
What would be best solution to load balance upstream traffic with failover in my case
