Asus AC3100 RT-AC88U Router How to configure devices so I can have better connections with my devices?

My Cisco Router is 3 years outside its last firmware update. I am having problems with it so I purchased the Asus AC3100 above. It has 8 LAN ports and a powerful wireless connection with 5 Ghtz. It has 5 Ghtz and 2.4 Ghtz as well as 8 LAN ports. Not worried about the LAN ports just need to figure out how to configure the router so everything below has its on dedicated IP address. ( I assume that is what I need to do?) I assume this but not sure how to do. If I am leaving something out you need or I need to do please advise?

The Problem is when I start to run specific machines or watch TV intermittently, I get conflicts and dropped signal all over. The only way to resolve with the old router is to shut down and reboot to figure out what I can keep on or leave off. I hope this Newer 2017 ASUS Router will be more helpful and last at least a few years. Listed below is what I have in my home/office. Can anyone suggest any configurations or practices that I can use to get this working? I have listed below information as well as device connection types. 1W = One wireless device. 1LAN = One LAN (hardwired) connection or both. Any advice on what I need to make sure I do to allow everything to be seamless is appreciated. Thank you.

I have wireless devices all over the house.
PC's Laptops & Tablets
1- Window10 Dell Vostro 3750 Laptop. (1W)
1- Windows10 Tower with both LAN and Wireless Card. (1W & 1LAN)
1- Wireless Printer HP MFP 1210 NFW All-in-One Printer. (1W)
1- PowerEdge Server 2008 LAN Connection. (1LAN)
2- Windows Vista Machines Dedicated to LAN For backups & for specific software applications. (1LAN each =2)
3- Android Samsung Galaxy devices 1-tablet, 2-Smartphones.
         (Not sure if they affect the number of IP addresses assigned?)  ???
1-MacBookPro wireless only. ( I assume it only takes up one IP address when on?) (1W)
1-Occasionally I will plug up an older XP machine for a specific piece of software to run. (1LAN)

TV's Other Home Devices
3 Smart TV's
   1-LG Smart TV with external ROKU device (Not sure if the TV takes an IP address but the ROKU does.)  (1W)
   1-Samsung SmartTV 4K. with external Roku Device. (Both take up an IP address) (2W)
   1-SharpTV with built-in ROKU device. (I assume it only takes up one IP address?)  (1W)
   1-Honeywell wireless Thermostat. ( Assume it takes up one IP address.) (1W)
   1-Netgear Wireless Extender to help with the reception on the far end of the house. (not sure if it requires an IP address?)  ???

I guess the simplest would be to ask....What do I need to make sure I do in order to keep things working. Thank you.
Fletcher BurdineTableau Trainer & Consultant Sales Exec.Asked:
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Tom CieslikIT EngineerCommented:
The simplest way would be to configure limited scope in your router to distribute only let say 100-150 addresses.
If you LAN IP is let say 192.168.1.x then configure scope to work from 192.168.1.101 to 192.168.1.254

This will give you around 150 dynamic addresses and 100 static.
Now assign all static addresses for all your LAN connected devices and leave dynamic for DHCP.

That's way you'll never get conflict in your local LAN/WIFI network
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Fred MarshallPrincipalCommented:
In order to provide a dedicated IP address you would either enter it manually OR enter things into the router that's providing DHCP.  
I don't know why static or dedicated IP addresses would be important though.
It's a bit more work and maintenance but I can't say it's a bad idea - not knowing much more here.
So, why not?

First, you should have but a single DHCP server.  One of the routers should have DHCP turned OFF.  I would likely prefer the newer ASUS router with DHCP ON.
Then you select a DHCP address range - let's say .100 to .199
Then you assign dedicated IP addresses to all the devices in the house.  You can do this one at a time or all at once.
First, you need their MAC addresses.
One way to get them is in the router itself - they will show up as dynamic addresses or leases.
Take each MAC address and enter it into the reserved table along with the dedicated IP address - perhaps in the range .200 to.250.

Then, reboot the router and it should establish new leases with the devices with the dedicated IP addresses.  And, you may need to reboot the devices as well.

Then, look at the dynamic list of address leases and see if there are any that have been missed and are still dynamic.
Enter those as well in the reserved list.

Of course, you can ascertain the MAC addresses of devices in other ways and enter those in the router's reserved IP list that way.
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JohnBusiness Consultant (Owner)Commented:
If everything is wireless except for the old XP Computer and Server, then have a wide DHCP scope as Tom has suggested above.

Give the Server a Static IP less than 100 (say .20)
Put your Printer on the LAN for stability (say .22)
Make the XP Machine static at (say .24)
Make the Vista machine static (say .26)

Then let the other machines get addresses at .101 and above as they move on / off the network.
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Fred MarshallPrincipalCommented:
So, I answered about static/reserved IP addresses but don't really know if this is your problem.  I figured it couldn't hurt and might help.

But there are other reasons that may make more sense in what you describe.
The most likely is that the wireless coverage in such a spread out situation (it seems at least) is the real culprit.
Take a laptop with inSSIDer installed.  Versions up to 3.xxx are free.
Then get it running and walk around your devices with it displaying the network.
Use a laptop with 2-band capability - most are these days.  i.e. 2.4GHz and 5GHz.

Here is what to look for:
Your signal should be at least -70dB and will be even better at -50dB  (bigger negative numbers are worse)
-70 isn't bad but that's about the limit - anything less than that can be flaky - which is what you seem to be experiencing.

The plots will also show you where interfering signals from neighbors, etc. are in relation to your own.
They should be set to not overlap or, if they do, the overlap is with the weakest foreign signals that you can see.
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JohnBusiness Consultant (Owner)Commented:
I think our answers overlapped and we are on roughly the same page.

I use inSSider 4 to check signal strength and that works well.

Any devices with AC cards (my X1 laptop has AC wireless) can go in the 5 GHz band and others stay in the 2.4 GHz band
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Fletcher BurdineTableau Trainer & Consultant Sales Exec.Author Commented:
Thank you. I was unclear of the terms and that cleared them up. I greatly appreciate your support. Funny Mr. Cieslik and I are from the same small town different states. Bristol, PA and Bristol, TN/VA. I knew I needed to do something to the router just did not know what the proper terms are and what they mean. That was great. Let's hope this year is full of lower taxes higher wages and more people at work than in jail. Regards. Rob Burdine RUAVOL2
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JohnBusiness Consultant (Owner)Commented:
You are very welcome and I was happy to help.  Happy New Year to you all.
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Tom CieslikIT EngineerCommented:
Thank You Rob :) We're glad that we was able to help you.

Happy New Year
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