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High availability with multiple DHCP IP
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Topic: High availability with multiple DHCP IP (Read 440 times)
egeback
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High availability with multiple DHCP IP
«
on:
May 28, 2024, 08:16:18 pm »
Hi
I have just setup a HA Opnsense setup with two virtual instances configured with CARP on internal vlan/interfaces but not on WAN due to DHCP setup. My ISP provides several IP DHCP IPs so each instance has its own IP. Failover works on the interfaces with CARP enabled (internal subnets on VLANs configured in Proxmox) but I have not found a way to trigger failover if WAN goes down. Gateway monitoring works but does not trigger failover (not sure if it should though?). Is there anyway to configure the gateway monitoring, or other function to trigger CARP to trigger and backup node takes over if WAN goes down?
I would like to avoid setting up a separate router and run double NAT if possible. I have seen tutorials but seams to be implemented mainly to solve the issue with when you only have a single DHCP address even if I also recognise that dynamic DNS "issue" is also solved, since the same IP is used on both routers.
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High availability with multiple DHCP IP