We recently acquired our own /24 and ASN. We will BGP peer (default routes only) to ISP-A and ISP-B. Right now we just have ISP-A up. ISP-B is working on enabling BGP on their circuit.
I currently have two Juniper SRX340 devices in an active-passive HA config. We’d like to only use ISP-A outbound, have it failover to ISP-B in the event that ISP-A goes down and then switch back to ISP-A when it comes back up. Is it better to leave the SRX340 devices in a HA pair, terminating both ISP connections to them or separate them out with one SRX340 going to ISP-A and the other connected to ISP-B and use something like VRRP between them?