I'm getting four different topology errors. The one that seems like it should be most easily fixable is
Identify Duplicate IP addresses. We have multiple sites with guest internet and we use the same IP range at each site for the guest addresses. They're not routable and just get NAT'd out to the internet. Is there any way (setting) in NPM to say "Ignore these segments for topology"?
Identify Duplicate MAC addresses. It looks like there's (among other things) 295 instances of 0000.0000.0000 showing out there. Where is NPM pulling this data from? How can I get more info? Also, some of the others look like random addresses on the aforementioned guest networks, is there any way to just get them ignored?
Incorrect data in CDP/LLDP tables - Where is that data coming from? Is there any way to see what devices NPM thinks are sourcing this incorrect data to look at for investigation?
Any help on any of these appreciated.