@RobakaWoody you mentioned IP's have changed, this this because the network topology has changed? I suspect as mentioned your APC cards have IP filtering enabled for web access. If you can ping them its not an incorrect gateway otherwise you wouldn't get a response.    We use a bunch of these cards and haven't had any issues after we installed Meraki MS units, I would say something with your config change on the card hasn't gone to plan.    Use your console cable to login to the cards and confirm their settings, if they look right but are still not working as Phil mentioned I would factory reset them ... View more