Hi Anand,
Basically my design includes two ISP links with two active VPN on each ISP which carring traffic from different source subnets and two backup VPNs on each ISP
Active VPN's
VPN1 on ISP1 - Source Subnets as an example 10.1.1.0/8
VPN2 on ISP2- Source Subnets as an example 10.2.2.0/8
If ISP1 goes down
VPn1 on ISP2
VPN2 on ISP2
if ISP2 gies down
VPN1 on ISP1
VPN2 on ISP1
In details,In the link which you have shared an eample for route based VPN as we are using the st0 interfaces in this example.Based idea behind using the Policy based VPN is becasue I can define few source subnets in the policy rule for VPn1 and few other source subnets in the policy rule for VPN2. By this way I will be dividing the traffic on both ISP's via VPN's.
Or please let me know if we can do Source based routing in route based VPN, few subnets I will route through st0.0(isp1) and few subnets I will route through st0.1(isp2). and VPN will be failover to st0.1 if st0.0 goes down and vice versa.Can we achieve this if both the ISP interfaces are in the same virtual routing instance.
Thanks