Home Subnetting

edsel-shuh

Let me apologize in advance for my terrible grammar, and coherent train of thoughts and my usage of consolidating groups of ideas/concepts/devices into one general categories.
I am trying to setup my home network with the purposes of it serving as a media server, hyper-visor, web/PHP/SQL server, and finally test lab. In my home network, the setup in place is two routers (ISP and personal) and three switches (all varying brands). From the ISP router I have connected it to one SOHO Cisco SG200 8 port switch and one TP-Link TL-SG108 8 port switch. Then a Netgear ProSafe GS108T connected to the TP-Link.

While I understand how to subnet and create subnets on paper when it comes to actually applying it, I always seemed to encounter technical/setup stumbling blocks.

First off it feels like an complete overkill to have this many network devices for a home/lab setup or is this completely/somewhat justified?

Second, concerning subnetting my networks. I made a comment before to my instructors at school concerning where My Linksys/Cisco during router setup, that the router gave me full access to setup my internal NAT address with any IP address scheme and recall his response along the line that it should followed the ISP DHCP addressing scheme. My ISP provided a class C IP, and i have decided to assign my router with a class A IP using class C subnet mask ( 10.0.0.0 255.255.255.0). I have a distinct feeling/impression this setup is already wrong somehow and that i should have assigned the personal router to have an IP address of 192.168.1.0 255.255.255.0 setup instead. Is this incorrect? If indeed it is incorrectly and needs to be reconfigured would my main subnet from ISP (192.168.1.1 255.255.255.0) then for the two switches directly connected would I then have them setup as point to point so then essentially (192.168.1.2 255.255.255.252) and (192.168.1.6 255.255.255.252)? Then for the router connected to the switch one (192.168.1.2 255.255.255.252) setup it up with an IP of 192.168.1.10 255.255.255.248) and then the third switch setup as (192.168.1.18 255.255.255.248). Well I guess technically the subnet created by the ISP would be 192.168.1.0 255.255.255.0 being my gateway is 192.168.1.1

example of the question below
ISP (192.168.1.1 /24 255.255.255.0) ----- switch 1 (192.168.1.2/30 255.255.255.252) ------ router 2 (192.168.1.10 /29 255.255.255.248)
ISP (192.168.1.1/24 255.255.255.0) ----- switch 2 (192.168.1.6/30 255.255.255.252) ----- switch 3 (192.168.1.18 /29 255.255.255.248)

or Is the example below the prefer or properly subnetted way?
ISP router (192.168.1.1) ----- switch 1 (192.168.1.2 /30 255.255.255.252) ------ router 2 (192.168.1.6 /29 255.255.255.248)
ISP router (192.168.1.1) ----- switch 2 (192.168.1.14 /29 255.255.255.248) ------ switch 3 (192.168.1.24 /29 255.255.255.252)

or current setup
ISP (192.168.1.1) ----- switch 1 (10.0.0.0 255.255.255.0) ----- router 2 (10.0.0.0 255.255.255.0) handling DHCP for connected devices to the switch
ISP (192.168.1.1) ----- switch 2 (192.168.1.3 255.255.255.0 (i believe)) ----- switch 3 (currently not setup but probably (192.168.1.4)?

There was actually going to be more questions concerning my setup but i am pretty sure this is confusing enough as it is, so i will stop and see if am completely off my rockers before moving forward. Again I apologize for how confusing it is and how terribly grammatically incorrect it appears.

Ronnie Wong

@edsel-shuh said in Home Subnetting:

Let me apologize in advance for my terrible grammar, and coherent train of thoughts and my usage of consolidating groups of ideas/concepts/devices into one general categories.
I am trying to setup my home network with the purposes of it serving as a media server, hyper-visor, web/PHP/SQL server, and finally test lab. In my home network, the setup in place is two routers (ISP and personal) and three switches (all varying brands). From the ISP router I have connected it to one SOHO Cisco SG200 8 port switch and one TP-Link TL-SG108 8 port switch. Then a Netgear ProSafe GS108T connected to the TP-Link.

Ok... let me have some information to help you out. when you state from your ISP router is this the cable modem, or dsl modem or other DTE provided by your ISP?

If this is any of the above, you will need an endpoint device that is ready to accept an IP address from your ISP (your PC or your router with an interface configured to become a DHCP client). This will allow you to connect to the ISP network. I do not believe the switches you've written about will allow you to assign a routed port on them.

While I understand how to subnet and create subnets on paper when it comes to actually applying it, I always seemed to encounter technical/setup stumbling blocks.

First off it feels like an complete overkill to have this many network devices for a home/lab setup or is this completely/somewhat justified?

This is totally up to you on how many devices you're willing to support. So it's justfied as long as you understand what you're configuring and what you're doing.

Second, concerning subnetting my networks. I made a comment before to my instructors at school concerning where My Linksys/Cisco during router setup, that the router gave me full access to setup my internal NAT address with any IP address scheme and recall his response along the line that it should followed the ISP DHCP addressing scheme. My ISP provided a class C IP, and i have decided to assign my router with a class A IP using class C subnet mask ( 10.0.0.0 255.255.255.0). I have a distinct feeling/impression this setup is already wrong somehow and that i should have assigned the personal router to have an IP address of 192.168.1.0 255.255.255.0 setup instead. Is this incorrect?

I'm assuming your instructor is saying that the ISP would probably assign your Cisco Router interface an IP address from it's pool and will follow its own IP addressing scheme. On the LAN side of the router, you should be able to assign whatever RFC 1918 address you want to and the normally your linksys router will handle the NAT without you having to touch it as traffic goes through the Linksys device it will do the NAT translations.

Please tell me if you're connecting to multiple ISPs?

If indeed it is incorrectly and needs to be reconfigured would my main subnet from ISP (192.168.1.1 255.255.255.0) then for the two switches directly connected would I then have them setup as point to point so then essentially (192.168.1.2 255.255.255.252) and (192.168.1.6 255.255.255.252)? Then for the router connected to the switch one (192.168.1.2 255.255.255.252) setup it up with an IP of 192.168.1.10 255.255.255.248) and then the third switch setup as (192.168.1.18 255.255.255.248). Well I guess technically the subnet created by the ISP would be 192.168.1.0 255.255.255.0 being my gateway is 192.168.1.1

example of the question below
ISP (192.168.1.1 /24 255.255.255.0) ----- switch 1 (192.168.1.2/30 255.255.255.252) ------ router 2 (192.168.1.10 /29 255.255.255.248)
ISP (192.168.1.1/24 255.255.255.0) ----- switch 2 (192.168.1.6/30 255.255.255.252) ----- switch 3 (192.168.1.18 /29 255.255.255.248)

or Is the example below the prefer or properly subnetted way?
ISP router (192.168.1.1) ----- switch 1 (192.168.1.2 /30 255.255.255.252) ------ router 2 (192.168.1.6 /29 255.255.255.248)
ISP router (192.168.1.1) ----- switch 2 (192.168.1.14 /29 255.255.255.248) ------ switch 3 (192.168.1.24 /29 255.255.255.252)

or current setup
ISP (192.168.1.1) ----- switch 1 (10.0.0.0 255.255.255.0) ----- router 2 (10.0.0.0 255.255.255.0) handling DHCP for connected devices to the switch
ISP (192.168.1.1) ----- switch 2 (192.168.1.3 255.255.255.0 (i believe)) ----- switch 3 (currently not setup but probably (192.168.1.4)?

I'm confused here as to what has happened above. If you have have a single router with multiple interfaces, you'll have one connect to your ISP. Then you'll have the second and third ports connect internally to DIFFERENT SUBNETS.
Each of the ports facing internally would have IP addresses that would become the Default Router (Default Gateway) to each subnet. The switches wouldn't do anything in your subnet to change that...if your devices are directly connected through a switch off of each router port.

There was actually going to be more questions concerning my setup but i am pretty sure this is confusing enough as it is, so i will stop and see if am completely off my rockers before moving forward. Again I apologize for how confusing it is and how terribly grammatically incorrect it appears.

Let me know what you're trying to accomplish with your addressing scheme as well. We may be able to help you. Don't worry about the numbering yet. just let me understand what you're wanting to do.