Hello, 
  
I am new to this forum.  I have installed many analog and IP cameras professionally but I worked with a IT expert and he did most of the networking.  Now I am installing four DS-2CD2145F-IS gray market Hikvision cameras at my home and I cannot get more then one to show up on my un-managed switch (netgear FS116) they all show up fine if I replace the switch with a router,  they work fine on the switch individually.  My former coworker is 4,000 miles away, so I thought I would try the forum. 
  
I have them set with static IP's - that much I know. 
The subnet mask appears to be correct for my network. 
Using HTTP port 80 and server port 8000 for all four cams. 
I have checked using Hikvision's SADP tool and iVMS-4200 - same problem with both. 
I did a "arp -a" cmd ping on the network, it confirms that it sees the cameras on the router but not on the switch. 
I tried a different switch with the same results. 
I confirmed that my router does not have a firewall that would block the cams - and if it was something hidden I would think it would affect it with either a switch or router. 
  
I am pulling my hair out, I have been at this for 8 hrs and have current security threat that I need to be monitoring, not messing around with the network. 
  
I suspect it is something obvious that I am just completely missing. 
  
Please let  me know if you have any ideas?