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Subnetting behind DHCP cable connection
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| Trunklid 2005-04-06, 2:45 pm |
| What is the best way to set up a subnet behind my cable modem; using
active directory and the IP of 192.168.xxx.xxx? I want to set it up
so the router (default 192.168.1.1) as the gateway and it will be on
the same segment as the network although I will change the default IP
to be on the same 192.168.xxx.xxx network segment. I only need one or
maybe two subnets. I was thinking about using the subnet mask of
255.255.255.128 any recommendations would be appreciated. ADG
Trunklid
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| Dave Watson 2005-04-06, 2:45 pm |
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"Trunklid" <adgtrunklid@comcast-dot-net.no-spam.invalid> wrote in message
news:415e04c9$1_3@alt.athenanews.com...
> What is the best way to set up a subnet behind my cable modem; using
> active directory and the IP of 192.168.xxx.xxx? I want to set it up
> so the router (default 192.168.1.1) as the gateway and it will be on
> the same segment as the network although I will change the default IP
> to be on the same 192.168.xxx.xxx network segment. I only need one or
> maybe two subnets. I was thinking about using the subnet mask of
> 255.255.255.128 any recommendations would be appreciated. ADG
> Trunklid
I think the only way to successfully do this would be to purchase a managed
switch and create vLAN's. I could be wrong and would welcome the
opportunity to be corrected and educated :-)
Dave
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Trunklid wrote:
> What is the best way to set up a subnet behind my cable modem; using
> active directory and the IP of 192.168.xxx.xxx? I want to set it up
> so the router (default 192.168.1.1) as the gateway and it will be on
> the same segment as the network although I will change the default IP
> to be on the same 192.168.xxx.xxx network segment. I only need one or
> maybe two subnets. I was thinking about using the subnet mask of
> 255.255.255.128 any recommendations would be appreciated. ADG
> Trunklid
>
Maybe this would work
IP Address : 192.168.1.1
Address Class : C
Network Address : 192.168.1.0
Subnet Address : 192.168.1.0
Subnet Mask : 255.255.255.128
Subnet bit mask : 110nnnnn.nnnnnnnn.nnnnnnnn.shhhhhhh
Subnet Bits : 25
Host Bits : 7
Possible Number of Subnets : 2
Hosts per Subnet : 126
Subnet Mask Subnet Size Host Range
192.168.1.0 255.255.255.128 126 192.168.1.1 to 192.168.1.126
192.168.1.128 255.255.255.128 126 192.168.1.129 to 192.168.1.254
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| Progressive with an Attitude 2005-04-06, 2:45 pm |
| Trunklid wrote:
> What is the best way to set up a subnet behind my cable modem; using
> active directory and the IP of 192.168.xxx.xxx? I want to set it up
> so the router (default 192.168.1.1) as the gateway and it will be on
> the same segment as the network although I will change the default IP
> to be on the same 192.168.xxx.xxx network segment. I only need one or
> maybe two subnets. I was thinking about using the subnet mask of
> 255.255.255.128 any recommendations would be appreciated. ADG
> Trunklid
>
Are you using a cable modem gateway (router) or a multi-homed router
with two NICs? Initially, I would suggest you use only one subnet. If
you are using a cable modem gateway, setting up the private network is
simple. Turn on DHCP on the router and dot the NICS for auto-configure.
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