Ok, if you're still seeing problems, you can always send me a topology diagram and details (napkin or full blown Visio, eithers good) along with current FW you're running and I'll assist where I can
If I were to purchase another Poe+ or poe++ swtich to run 2 switches. Would you have the ethernet cable from the NVR to the main POE switch (in this case the trendnet) and then another ethernet cable from the trendnet to the second POE switch?
Now for IP addresses and all that, would you change the IP address to the same range as the first one (say it's 10.3.3.3) or change to a different address such as 10.4.4.4?
If I were to purchase another Poe+ or poe++ swtich to run 2 switches. Would you have the ethernet cable from the NVR to the main POE switch (in this case the trendnet) and then another ethernet cable from the trendnet to the second POE switch?
I have four POE switches. Two in a rack in my IT closet, one in the garage, and one in my first-floor office.
In the attached diagram, the POE switches are in RED. I run dual NICs in two PCs and two subnets, one for the cams and one for everything else. You could think of the PI PC as your NVR and ignore the Office PC.