MX100 cluster "Uplink IP address in conflict with another device"

[DavidDawson]

We have two MX100 devices for failover purposes. When I click Security appliance -> Appliance status I see

Primary Current master

Spare Passive; ready

If I click the link to view Spare there's a messages that shows "Uplink IP address in conflict with another device" in red. Is this to be expected?

[MilesMeraki · Accepted solution]

How do you have the HA arrangement currently configured, the WAN ports on these two devices should be different? The only use case I could see where they would be identical if you were using a Public static IP for the devices and directly plugging into your ISPs network.

[DavidDawson]

Thanks for the lead. Questions are sometimes more helpful than answers. 🙂 I think there must be a device in front of our firewall claiming the IP address and causing the IP conflict. I'm going to pursue that. We don't have a visit to this site lined up.