Punch Through Two Cinderblock Walls?

[KCL]

My challenge:

We have two buildings in an office complex, separated by a wide alley -- say, 30-50 feet apart. I want to link the networks in the two buildings so they are the same network. Buildings are all cinderblock (except for the metal doors, of course).

The kicker is that the landlord expressly forbids us mounting anything external -- not on the walls or the roof. Is there a solution that we could mount internally in each building that would give us a reasonable signal?

 

[anotherengineer]

Drop ceiling? Maybe up there?

 

[tgl]

You might be able to make it work with point-to-point wireless links, such as Ubiquiti's airMAX line. The pricier ones can span multiple-kilometer distances, so I think there'd be a reasonable shot at punching through two layers of cinder block. However, you will probably not get better than a couple hundred Mbps throughput --- is that adequate? (Ubiquiti does sell PtP gear with Gbps throughput, but it runs in the 60GHz band and will most likely not manage to get through your walls. I'd go for one of the models that runs in 2.4GHz to have the best chance of success. Plus, those are relatively low-cost, so you're not out much if it doesn't work.)

 

[degrub]

Ask your ISP to run a couple drops from their utility poles and link the two buildings. Will your landlord allow that ?

 

[KCL]

So, here's an update!

The owner of the business decided to add a drop at the building across the alley that has it's own router and subnet. So the initial problem was solved. Now, for something new (or at least expanded...)

To be clear, here, I am primarily a software guy who has slightly better than a layman's understanding of hardware, so I will not be offended by ANY suggestions (even if it's "hire a network engineer" -- but that's kind out for the moment.)

The company has expanded to more spaces in the complex--but the owner of the complex DID say we could mount something outside as long as it's "not ugly".

I'm inserting a basic map of the new layout. I'd love to go with three antennas if possible as Antenna B is where our primary router will be. The longest distance between two antennas (A and C) is a little under 150'. We've got network drops beween units 14-16 on Building 1. They buildings in Simi Valley, California.

I'm looking for recommendations as to the best (stylish?) antennas to use that will give us the best throughput. I am not sure about how Meshes work, really, so I'd love to do a Mesh if that's practical. Right now, they have two ASUS AX88Us running in Building 1, Unit 14 and Building 2, Unit 14. If there are better units to support the new topology, I'd love to hear them too. Can't break the bank, however...

Thanks in advance. I'm happy to provide an additional information if it will help!

Scott.