Yes, it is true that the ASA will not return ICMP echo replies from a "far" interface, and as far as I have been able to determine there is no way to change this behavior.
To prevent DFM from sending the alerts, unmanage the IP address on the device. Go to Monitor => Fault Settings => Setup => Fault Device Details. Select your firewall, click View, then click on the device name on the resulting page. Click on IP under Interface Status in the left pane, then unmanage the unreachable IP addresses.
I'm not sure why this is not the default behavior for ASA devices. Perhaps it is because of the difficulty in determining what interface the NMS can be reached from.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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