Yeah, confirmed. They set up the Secondary IP address, what I figured when they put the ip on the gateway. From what I am reading, it says you shouldn't use the secondary ip permanently, because there can be issues with two subnets in the same broadcast domain.
So, I got off with one of the engineers and he said that they can't setup a static route with new block to our box over the existing public subnet. He made it sound like you can't do it because right now their router is in bridge mode. Does this make sense what they are saying? Ever run into this?
My experience is that routing the new subnet is more common but different ISPs do things differently and based on the way they have setup their router it sounds like using a secondary IP is the only way.
As to whether it is a good thing or not the main issue is you are increasing the broadcast domain by using secondary IPs which can be an issue but with the small amount of IPs from the original and new subnets you should be okay.
IntroductionCisco DNA Center Deployment StepsISE Deployment Steps
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