We have two ISPs but we are not able to achieve link failover to ISP-2 whenever ISP-1 fails.
We got /30 P2P and /29 subnet from both the ISPs. We have connected /30 P2P coming from ISP devices with MS-250 switches which are stacked together. The /29 subnet is used to connect MS stack with MX-100 HA pair. Also we are using Aryaka for WAN optimization so it is also taking one public IP.
We can't use /30 P2P for MX-100 pair directly as we need minimum 4 IPs for failover. Hence we have done static routing on the switch stack where it only allows one default route to ISP-1. We can't add default route for ISP-2.
So whenever ISP-1 fails there's no route for ISP-2 thus failing both the links. Could anyone of you suggest a better option to achieve failover?