IP addressing...

IP addressing...
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Subject Author Date
IP addressing... miketop1 12-14-2006
Posted by on December 14, 2006, 4:14 pm
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Please I have this configuration, I allocated some addressing to them
but not sure if it's right.
can someone please help me out.

Specification,
I want 4 subnets,
The router has a local IP of : 172.20.128.253

The problem is, I'm having problems allocating IPs to the switches, the
last set of switches below will evebtually be connected to
workstations. All workstations are a total of 50, so I planned on
having 13 host in each of the 4 switches. Need to get what thier ranges
are.
Please, if this is a bad configuration, Please advice.

The configuration can be found here:
http://i141.photobucket.com/albums/r80/Vergil_Ace/upld.jpg

Thanks

N.B.
not neccesary, thought I include it, WAN IP : 193.106.211.11


Pure Networks
Posted by on December 14, 2006, 4:21 pm
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This is what I did initially,
I have this feeling it's wrong, read it. Just that I am not confident
enough.

Now the switch connected to the router will have an IP address of
172.20.128.254, but the gateway will be configured to the Local IP
address of the router; 172.20.128.253

=B7        To divide 172.20.128.254, to 4 subnets; the following process
are taken.

The formula 2n - 2 =3D No. of subnet required (where n =3D no. bits
to be removed from the host address)

172.20.128.254 =3D 10101100.00010100.10000000.11111110

Host address: 10000000.11111110

No. of bits to be taken out =3D 3 i.e. (100)

This is included to the network address to give the Subnet Mask;

(Since by convention, the bits for the network address are all set to
1, though it would also work if the bits were set exactly as in the
network address) =3D 11111111.11111111.11111000.00000000

To get the Starting pool (subnet address), we do a bitwise AND function
to the Subnet Mask & the IP address

We get; 10101100.00010100.100000000.00000000
Which is equivalent to; 172.20.128.0

So our IP range for the 5 switches will be 172.20.128.1 - 5.


Please, what I did is it anyway correct?

Thanks


miket...@gmail.com wrote:

> Please I have this configuration, I allocated some addressing to them
> but not sure if it's right.
> can someone please help me out.
>
> Specification,
> I want 4 subnets,
> The router has a local IP of : 172.20.128.253
>
> The problem is, I'm having problems allocating IPs to the switches, the
> last set of switches below will evebtually be connected to
> workstations. All workstations are a total of 50, so I planned on
> having 13 host in each of the 4 switches. Need to get what thier ranges
> are.
> Please, if this is a bad configuration, Please advice.
>
> The configuration can be found here:
> http://i141.photobucket.com/albums/r80/Vergil_Ace/upld.jpg
>
> Thanks
>
> N.B.=20
> not neccesary, thought I include it, WAN IP : 193.106.211.11


Posted by Simon on December 15, 2006, 2:54 am
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miketop1@gmail.com wrote:
> Please I have this configuration, I allocated some addressing to them
> but not sure if it's right.
> can someone please help me out.
>
> Specification,
> I want 4 subnets,
> The router has a local IP of : 172.20.128.253
>
> The problem is, I'm having problems allocating IPs to the switches, the
> last set of switches below will evebtually be connected to
> workstations. All workstations are a total of 50, so I planned on
> having 13 host in each of the 4 switches. Need to get what thier ranges
> are.
> Please, if this is a bad configuration, Please advice.
>
> The configuration can be found here:
> http://i141.photobucket.com/albums/r80/Vergil_Ace/upld.jpg
>
> Thanks
>
> N.B.
> not neccesary, thought I include it, WAN IP : 193.106.211.11
>
Not quite sure why you want 4 subnets when all the switches and clients
are in the same remote office as per your pic. Assuming the network is a
class c then you can use 172.20.128.1 - 254 for switches or clients.

Posted by on December 15, 2006, 3:47 am
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so, you mean I can just hook up the workstation to the switches below,
and allocate IP addresses to the workstations from; 172.20.128.1 - 254
?


Simon wrote:

> miketop1@gmail.com wrote:
> > Please I have this configuration, I allocated some addressing to them
> > but not sure if it's right.
> > can someone please help me out.
> >
> > Specification,
> > I want 4 subnets,
> > The router has a local IP of : 172.20.128.253
> >
> > The problem is, I'm having problems allocating IPs to the switches, the
> > last set of switches below will evebtually be connected to
> > workstations. All workstations are a total of 50, so I planned on
> > having 13 host in each of the 4 switches. Need to get what thier ranges
> > are.
> > Please, if this is a bad configuration, Please advice.
> >
> > The configuration can be found here:
> > http://i141.photobucket.com/albums/r80/Vergil_Ace/upld.jpg
> >
> > Thanks
> >
> > N.B.
> > not neccesary, thought I include it, WAN IP : 193.106.211.11
> >
> Not quite sure why you want 4 subnets when all the switches and clients
> are in the same remote office as per your pic. Assuming the network is a
> class c then you can use 172.20.128.1 - 254 for switches or clients.


Posted by Simon on December 15, 2006, 4:52 am
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miketop1@gmail.com wrote:
> so, you mean I can just hook up the workstation to the switches below,
> and allocate IP addresses to the workstations from; 172.20.128.1 - 254
> ?
>
>
> Simon wrote:
>
>> miketop1@gmail.com wrote:
>>> Please I have this configuration, I allocated some addressing to them
>>> but not sure if it's right.
>>> can someone please help me out.
>>>
>>> Specification,
>>> I want 4 subnets,
>>> The router has a local IP of : 172.20.128.253
>>>
>>> The problem is, I'm having problems allocating IPs to the switches, the
>>> last set of switches below will evebtually be connected to
>>> workstations. All workstations are a total of 50, so I planned on
>>> having 13 host in each of the 4 switches. Need to get what thier ranges
>>> are.
>>> Please, if this is a bad configuration, Please advice.
>>>
>>> The configuration can be found here:
>>> http://i141.photobucket.com/albums/r80/Vergil_Ace/upld.jpg
>>>
>>> Thanks
>>>
>>> N.B.
>>> not neccesary, thought I include it, WAN IP : 193.106.211.11
>>>
>> Not quite sure why you want 4 subnets when all the switches and clients
>> are in the same remote office as per your pic. Assuming the network is a
>> class c then you can use 172.20.128.1 - 254 for switches or clients.
>
yes :)


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