What is the makeup of my network and how would it fail?

 I can look at my network as being in three pieces: Front of Network (FON), Middle of Network (MON), and Back of Network (BON).  Really the breakup (and notes on failure) is as follows:

• middle of network (MON): RPi1/SW118 -> AV2000 -> power wires -> AV2000 -> SW116/RPi2
• power might go out; UPS would only last for a few minutes; how would this be logged?
• power hicup might cause AV2000 to break connection and have to be reset - how would I know this?
• front of network (FON): FLINT / SLATE / media equip.
• FON might go down if FLINT / SLATE are not connected
• possible that FLINT or SLATE might not be connected but other one is
• moving some vlans for fall over to FLINT / SLATE might help
• power might go out; UPS would only last for a few minutes
• back of network (BON): Laptop / Rack / monitor / table experiments / printer
• rack is on its own UPS; power failure should cause rack to turn itself off - how would this be logged?
• Laptop is on same UPS as MON; but could remove and work independently, monitor would not be useful

I was also thinking that I might add a couple of RPis to the mix to complete some of the monitoring / logging / sensing functions:

• RPi1: could be used to monitor FON and part of MON
• would be in charge of logging and notification
• could monitor network condition in living room
• RPi2: could be used to monitor part of MON and BON
• would be in charge of logging and notification
• could monitor network condition in back bedroom

This seems like a reasonable approach to being able to increase my redundancy / monitoring as a necessary component of the network.

Project #32 - Setup Redundancy/Fallover in the Network

 I got to thinking about how my network is connected and realized that I don't have a way of reducing the outages or recording what has happened.  I have a project that was supposed to tell me the condition of the WiFi connections at any one time, but I don't use that information in any sense.  I also don't have a way for the front of the network to know what the back of the network is doing and vice versa. I don't have a graceful way to shut things down if the network fails from some external problem (mainly power outages which happen from time to time here).  WiFi outages also happen from time to time but they are less important since the backend of my network is mainly for hobby purposes.

Fallover is not apparent in the current setup of my network.  Is that important to me?  It depends on what I am doing at the moment.  If I am wood carving, not at all.  If I am working on an electronic circuit, also not important.  But if I am online how do I keep online without a problem.  I could switch from one network type to another, but is that efficient?  So a number of questions come to mind:

• first of all, what is missing from my network?
• how would the front fail as opposed to the middle and back?
• if the front goes down, how would I know?
• if the middle goes down how would I know?
• does it matter if the back is completely off?
• how can I keep my laptop in the back always available?
• is there a fall over that I can count on?
• can I log what is happening with the network? where?
• how does WiFi from other apartments into bedroom play into this?
• how do I detect how good of a connection I have?
• can I separate out living room from back bedroom?
• would it be profitable to switch AV2000s with a WiFi mesh connnection?
• could the AP-HD be used in a WiFi mesh configuration?