LAN issues with printing

Question

I recently purchased the NOVT1114 4G LTE router. It is working great and all the computers connect to the Internet just find. The problem is suddenly we have not been able to print to the networked printer connected to a separate wireless router via an Ethernet cable. I have the wireless router in one building that gets a better 4G signal and some computers connect and receive their IP from the 4G router. I then have connected to the 4G router a wireless Ghost Bridge to connect the other building. At the end of that Ghost Bridge is a wireless router setup for DHCP for those devices. So yes, they receive the internal 10.0 address not for public use. Like I said all those computers connect to the Internet and have great service. The wired networked copier however cannot get out and no one can print to it. We can't seem to see backwards into the LAN from the computers connected to the 4G router either. We use to be able to ping the other router, but I can't seem to get past the 4G router into the LAN like I used to.  What am I missing? Ideas?

Answer 1

As I read your description I paint the following topology for your environment:
- VZW ))) 4G Router ))) PC1
- VZW ))) 4G Router ))) PC2
- VZW ))) 4G Router ))) Prt1
- VZW ))) 4G Router === AP2 ))) PC3
- VZW ))) 4G Router === AP2 ))) PC4
- VZW ))) 4G Router ))) AP3 === AP4? ))) PC5
- VZW ))) 4G Router ))) AP3 === AP4? ))) PC6
Apparently all PCs have internet access which is a good start.  At least the networking devices are talking to each other and handing traffic down the chain and back out to your 4G LTE router which is acting like the modem/WAN connection. 
If I'm following you correctly then PC1 and PC2 cannot ping PC5 and PC6.  Likewise nothing can apparently connect to Prt1 (network printer).  I feel a few issues could be going on.
1. Double NAT - Depending on how you have configured your additional APs (access points) you may have devices sitting behind multiple NAT firewalls within the LAN.  That means traffic can leave devices like PC6 and hit the internet but not necessarily the other way around unless those devices opened up a pathway first.  Not to mention the NAT you are resting behind on the VZW network itself...
2. Wireless Client Isolation - Its common for many home routers to have a feature that limits the ability of locally connected machines from communicating directly with each other.  This feature is often desirable for guest wireless access and not so much for home/personal use.
What you should consider doing is temporarily disabling all of the DHCP functionality on your additional APs (the bridge and 2nd router).  Allow all devices to rely on the 4G LTE router as the default gateway and DHCP server.  That way everything can be managed together as one large network instead of several smaller isolated ones.
To help with the printer issue consider temporarily Ethernet cable connecting it to the router its nearest to and then having wireless devices on the same router setting up a new connection.  This should help you determine if any kind of wireless isolation feature is enabled or not.  It shouldn't be by default but you may have accidentally turned it on somehow.  Restoring the defaults on the 4G LTE router would also clear up an issue like this too.