PtP Bridge Networking

[ncc716]

I am relatively new to CCTV networking. I've taught myself some of the basic principles when it comes to installing PoE IP cameras and how to route data back to a switch or NVR. My 9-5 is splicing fiber optic but I am trying to broaden my understanding of networking in general.

I have been trying to work on a solution for a multi-building trucking yard where burial/aerial cabling is not feasible due to the amount of large traffic going through the lot. The property has 5 buildings across 3/4 of a mile. I have used Adalov CPE660 PtP bridges in the past for single cameras. I understand there are PtMP functions with these bridges, but the problem is each building can only see the next. So, building A can see B, B can see C, C can see D, and D can see E. There is not a clear line of sight for each building to see the main building so PtMP is not going to work in this case. After installing the (9) Reolink RLC-811A cameras, I am able to view them on the NVR but the last 4 cameras on the furthest buildings (D and E) are intermittent throughout the day/night. I understand these PtP bridges are not intended to be daisy-chained like this. With their limitation of 100 mbps, I am assuming that because of how many bridges are in play the data is not being received or transmitted well enough for a stable connection. I have 4 bridges between the buildings, and they are all technically working. There is conduit between building B and C that I plan to run a fiber optic line to a media converter to in order to cut out a bridge in the chain.

From a novice point of view, I think these are the potential issues:

• Data loss over the chain (losing 15 mbps per jump)
• Poor bridge alignment
• Bridge capability (upgrading to one that supports 300+ mbps)
• Number of unmanaged switches in play (plug IP cameras into Lan 2 on bridge w/ PoE injectors instead)
• PtP Bridge not on same subnet as the cameras
• Power supply issue (PoE switch not supplying enough watts for the cameras)

I need to figure out how to get data all the way to the furthest building and maintain stable connection. I cannot install a fiber optic network underground or wire any other buildings together besides the conduit between B and C. Any tips, solutions, or a dose of reality for what I am trying to do?

The current chain:
NVR - main switch - PtP A (master) - PtP A (slave) - PoE/Lan plug - PoE switch A - PtP B (master) - PtP B (slave) - PoE/Lan plug - PoE switch B - PtP C (master) - PtP C (slave) - PoE/Lan plug - PoE switch C - PtP D (master) - PtP D (slave) - PoE/Lan plug - PoE switch D

Switch A: 3 cameras
Switch B: 2 cameras
Switch C: 2 cameras
Switch D: 2 cameras

 

[Flintstone61]

Try limiting the FPS where you can, on as many cams as you can...and see if you get a better result from those distant cams. Most of mine are around 12-15 fps.

 

[Flintstone61]

maybe scratch a drawing of the building layout. Maybe you can do PtMP of you used a small pole to get away from bldg 1 enough. I have a tree growing in between my Ubiquiti's but its still sending 2 cam streams just fine.
As a matter of fact. When the 55 year old pole finally rotted away holding the Ubiquiti ptp and one cam, it tipped about 40 degrees and rolled 1/4 trun away from base unit. was still getting the stream! I was like Holy funk!

 

[TonyR]

Can't you put a mast (pole) at the peak of the roofline on each building for the radios that is tall enough to allow a PtMP radio on bldg. A to have clear LOS to the other four PtMP radios, also on poles, on each of the bldgs. B, C, D and E?