1 Router 4 Class C Network Segments?

This may not be the correct area to ask this but I will give it a try.



If you have a connection from a provider and you're given four; A.B.C.0/24's.
Should you have 4 routers for each class C.?



I was in a place and I think many of their network problems could be their
router, as they have 1 router that routes for 4 C network segments.



Can someone explain this for me please?

"Mr. Backup" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> If you have a connection from a provider and you're given four;
A.B.C.0/24's.
> Should you have 4 routers for each class C.?

No. Those are the same subnet,...that is only one segment.

> I was in a place and I think many of their network problems could be their
> router, as they have 1 router that routes for 4 C network segments.

There is a difference between 4 network segment and 4 addresses.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/IS...cessRules.html

Microsoft Internet Security & Acceleration Server: Guidance
http://www.microsoft.com/isaserver/t...dance/2004.asp
http://www.microsoft.com/isaserver/t...dance/2000.asp

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp
-----------------------------------------------------

So you're saying that it's fine then to have a 1 router with 4 Subnets?



So if I have the IP of A.B.92.0 and the Mask of 255.255.252.0 this would
give me the range of A.B.92.0 to A.B.95.255.



A.B.92.0 ß each with a subnet of 254

A.B.93.0 ß each with a subnet of 254

A.B.94.0 ß each with a subnet of 254

A.B.95.0 ß each with a subnet of 254



Would this be 4 Class C networks under one router?

And would this be correct to configure this way?





"Phillip Windell" <@.> wrote in message
news:%(E-Mail Removed)...
>
> "Mr. Backup" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> If you have a connection from a provider and you're given four;
> A.B.C.0/24's.
>> Should you have 4 routers for each class C.?
>
> No. Those are the same subnet,...that is only one segment.
>
>> I was in a place and I think many of their network problems could be
>> their
>> router, as they have 1 router that routes for 4 C network segments.
>
> There is a difference between 4 network segment and 4 addresses.
>
> --
> Phillip Windell [MCP, MVP, CCNA]
> www.wandtv.com
> -----------------------------------------------------
> Understanding the ISA 2004 Access Rule Processing
> http://www.isaserver.org/articles/IS...cessRules.html
>
> Microsoft Internet Security & Acceleration Server: Guidance
> http://www.microsoft.com/isaserver/t...dance/2004.asp
> http://www.microsoft.com/isaserver/t...dance/2000.asp
>
> Microsoft Internet Security & Acceleration Server: Partners
> http://www.microsoft.com/isaserver/partners/default.asp
> -----------------------------------------------------
>
>
>

"Mr. Backup" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> A.B.92.0 ß each with a subnet of 254
> A.B.93.0 ß each with a subnet of 254
> A.B.94.0 ß each with a subnet of 254
> A.B.95.0 ß each with a subnet of 254

> Would this be 4 Class C networks under one router?

Yes, that is 4 networks. The "class" is pretty much irrelevant today.
Routers need one interface per-subnet. The interfaces can be physical or
"logical" as in the case of VLANs. Some routers have only three interfaces
(one ethernet, two serial), others such as our is capable of 96 physical
ethernet and no serial, but it cost about $10,000.00.

There is no way to answer your question based on the way you asked it. I
don't know what you are getting at and what you are expecting to do or not
do.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/IS...cessRules.html

Microsoft Internet Security & Acceleration Server: Guidance
http://www.microsoft.com/isaserver/t...dance/2004.asp
http://www.microsoft.com/isaserver/t...dance/2000.asp

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp
-----------------------------------------------------

[trimmed post]

On 9/1/2005 10:54, Mr. Backup wrote:
> So if I have the IP of A.B.92.0 and the Mask of 255.255.252.0 this would
> give me the range of A.B.92.0 to A.B.95.255.

Yup

> A.B.92.0 ﾟ each with a subnet of 254
>
> A.B.93.0 ﾟ each with a subnet of 254
>
> A.B.94.0 ﾟ each with a subnet of 254
>
> A.B.95.0 ﾟ each with a subnet of 254
>
>
>
> Would this be 4 Class C networks under one router?

Well Yes, but...

> And would this be correct to configure this way?

No. You have to use the same /22 subnet as your first configuration,
255.255.252.0. So, reality is that you do have 4 class C's, but they're
all on the same subnet. If you want to have actual separate /24 class
C sized subnets, you will need a router with at least 4 interfaces or 4
routers with 2 interfaces and create another network using the private
address space in the middle of them.

~Jason

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