Two Networks on two adapters

Ok, it is a bit of a mix up, Hope you can understand.

I have 1 PC that I need to connect to 2 different networks at the same time.
It has 1 onboard adapter (Adapter “A�) and 1 pci Network adapter (Adapter “B�)
“A� connects to Lan “A�, Router and Internet with a dynamic IP address
IP 192.168.1.X
Mask 255.255.255.0
Gate 192.168.1.1
DNS 192.168.1.1
“B� Connects to LAN “B� without Internet and Static IP
IP 192.168.1.50,
Mask 255.255.255.0
“A� communicates, “B� does NOT,
If I disable adapter “A� then “B� communicates.

If I invert the system, “A� for “B� and “B� for “A� I have the same problem,
connection to Lan “B� but not to “A� and Internet until I disable the Onboard
lan “B� adapter

HOW can I get the 2 networks to work at the same time, Without disabling
one???

On Mar 24, 11:46 am, Leon Hattingh
<LeonHatti...@discussions.microsoft.com> wrote:
> Ok, it is a bit of a mix up, Hope you can understand.
>
> I have 1 PC that I need to connect to 2 different networks at the same time.
> It has 1 onboard adapter (Adapter "A") and 1 pci Network adapter (Adapter "B")
> "A" connects to Lan "A", Router and Internet with a dynamic IP address
> IP 192.168.1.X
> Mask 255.255.255.0
> Gate 192.168.1.1
> DNS 192.168.1.1
> "B" Connects to LAN "B" without Internet and Static IP
> IP 192.168.1.50,
> Mask 255.255.255.0
> "A" communicates, "B" does NOT,
> If I disable adapter "A" then "B" communicates.
>
> If I invert the system, "A" for "B" and "B" for "A" I have the same problem,
> connection to Lan "B" but not to "A" and Internet until I disable the Onboard
> lan "B" adapter
>
> HOW can I get the 2 networks to work at the same time, Without disabling
> one???

Your problem is the fact that both are using the exact same IP
addressing scheme. You need to change one of the network from
192.168.1.xxx to 192.168.[2-254].

When both are using the same IP scheme, then XP does not know how to
direct to redirect over the different adapters.

Exactly,

I learned this issue the hard way years ago when I first setup our TCP/IP
network and used 192.168.1.x as well. Then all of a sudden everyone's home
router came out with either .0.x or .1.x as well and half of them started
having connection issues. What a PIA that was.

Now I switched my internal 192.168.x.x number to an obscure one to hope to
avoid issues in the future.

As smlunatick pointed out, when you have two nics with the same IP range the
one that is bound at the top is the one that will route all the traffic.


"smlunatick" <yveslec@gmail.com> wrote in message
news:5dfe6458-b906-4159-847c-13ed0b7da387@s50g2000hsb.googlegroups.com...
> On Mar 24, 11:46 am, Leon Hattingh
> <LeonHatti...@discussions.microsoft.com> wrote:
>> Ok, it is a bit of a mix up, Hope you can understand.
>>
>> I have 1 PC that I need to connect to 2 different networks at the same
>> time.
>> It has 1 onboard adapter (Adapter "A") and 1 pci Network adapter (Adapter
>> "B")
>> "A" connects to Lan "A", Router and Internet with a dynamic IP address
>> IP 192.168.1.X
>> Mask 255.255.255.0
>> Gate 192.168.1.1
>> DNS 192.168.1.1
>> "B" Connects to LAN "B" without Internet and Static IP
>> IP 192.168.1.50,
>> Mask 255.255.255.0
>> "A" communicates, "B" does NOT,
>> If I disable adapter "A" then "B" communicates.
>>
>> If I invert the system, "A" for "B" and "B" for "A" I have the same
>> problem,
>> connection to Lan "B" but not to "A" and Internet until I disable the
>> Onboard
>> lan "B" adapter
>>
>> HOW can I get the 2 networks to work at the same time, Without disabling
>> one???
>
> Your problem is the fact that both are using the exact same IP
> addressing scheme. You need to change one of the network from
> 192.168.1.xxx to 192.168.[2-254].
>
> When both are using the same IP scheme, then XP does not know how to
> direct to redirect over the different adapters.
>

On Mar 24, 2:49*pm, "Jordan" <n...@here.com> wrote:
> Exactly,
>
> I learned this issue the hard way years ago when I first setup our TCP/IP
> network and used 192.168.1.x as well. *Then all of a sudden everyone's home
> router came out with either .0.x or .1.x as well and half of them started
> having connection issues. *What a PIA that was.
>
> Now I switched my internal 192.168.x.x number to an obscure one to hope to
> avoid issues in the future.
>
> As smlunatick pointed out, when you have two nics with the same IP range the
> one that is bound at the top is the one that will route all the traffic.
>
> "smlunatick" <yves...@gmail.com> wrote in message
>
> news:5dfe6458-b906-4159-847c-13ed0b7da387@s50g2000hsb.googlegroups.com...
>
>
>
> > On Mar 24, 11:46 am, Leon Hattingh
> > <LeonHatti...@discussions.microsoft.com> wrote:
> >> Ok, it is a bit of a mix up, Hope you can understand.
>
> >> I have 1 PC that I need to connect to 2 different networks at the same
> >> time.
> >> It has 1 onboard adapter (Adapter "A") and 1 pci Network adapter (Adapter
> >> "B")
> >> "A" connects to Lan "A", Router and Internet with a dynamic IP address
> >> * * * * IP * * *192.168.1.X
> >> * * * * Mask * *255.255.255.0
> >> * * * * Gate * *192.168.1.1
> >> * * * * DNS * * 192.168.1.1
> >> "B" Connects to LAN "B" without Internet and Static IP
> >> IP * * *192.168.1.50,
> >> Mask * *255.255.255.0
> >> "A" communicates, "B" does NOT,
> >> If I disable adapter *"A" then "B" communicates.
>
> >> If I invert the system, "A" for "B" and "B" for "A" I have the same
> >> problem,
> >> connection to Lan "B" but not to "A" and Internet until I disable the
> >> Onboard
> >> lan "B" adapter
>
> >> HOW can I get the 2 networks to work at the same time, Without disabling
> >> one???
>
> > Your problem is the fact that both are using the exact same IP
> > addressing scheme. You need to change one of the network from
> > 192.168.1.xxx to 192.168.[2-254].
>
> > When both are using the same IP scheme, then XP does not know how to
> > direct to redirect over the different adapters.- Hide quoted text -
>
> - Show quoted text -

I've gone to the extreme and placed my office network to
192.168.254.xxx. I have yet to find a client's network where there is
254 different subnets.

As a matter of interest I prefer to work with 10-series, and /16 subnets.
That way I can allocate a /24 range for each purpose. Makes things a lot
easier when adding a computer or printer, since you only need to check for
used IPs in that range.

254 addresses in a /24 subnet may sound a lot but it's like the old programs
with linenumbers, if you use 1,2,3,4 then you cannot insert one into the
sequence, so it makes sense to use ranges with some free space.

> On Mar 24, 2:49 pm, "Jordan" <n...@here.com> wrote:

> I've gone to the extreme and placed my office network to
> 192.168.254.xxx. I have yet to find a client's network where there is
> 254 different subnets.
>

On 30 mar, 03:50, Anteaus <Ante...@discussions.microsoft.com> wrote:
> As a matter of interest I prefer to work with 10-series, and /16 subnets.
> That way I can allocate a /24 range for each purpose. Makes things a lot
> easier when adding a computer or printer, since you only need to check for
> used IPs in that range.
>
> 254 addresses in a /24 subnet may sound a lot but it's like the old programs
> with linenumbers, if you use 1,2,3,4 *then you cannot insert one into the
> sequence, so it makes sense to use ranges with some free space.
>
>
>
> > On Mar 24, 2:49 pm, "Jordan" <n...@here.com> wrote:
> > I've gone to the extreme and placed my office network to
> > 192.168.254.xxx. *I have yet to find a client's network where there is
> > 254 different subnets.- Ocultar texto de la cita -
>
> - Mostrar texto de la cita -

Hello, I have a similar problem in XP SP2; I have one nic pointed to
128.172.xxx.xxx for my intranet and the other one pointing to
200.44.xxx.xxx; I use the last one for internet and the first one for
my intranet; however, in order to browse my internal network, i have
to disable de 200.44.xxx.xxx; i'd like to know can they coexist
without having to disconnect one of them

On Apr 14, 11:00*am, charlybrown <marrer...@gmail.com> wrote:
> On 30 mar, 03:50, Anteaus <Ante...@discussions.microsoft.com> wrote:
>
>
>
>
>
> > As a matter of interest I prefer to work with 10-series, and /16 subnets..
> > That way I can allocate a /24 range for each purpose. Makes things a lot
> > easier when adding a computer or printer, since you only need to check for
> > used IPs in that range.
>
> > 254 addresses in a /24 subnet may sound a lot but it's like the old programs
> > with linenumbers, if you use 1,2,3,4 *then you cannot insert one into the
> > sequence, so it makes sense to use ranges with some free space.
>
> > > On Mar 24, 2:49 pm, "Jordan" <n...@here.com> wrote:
> > > I've gone to the extreme and placed my office network to
> > > 192.168.254.xxx. *I have yet to find a client's network where there is
> > > 254 different subnets.- Ocultar texto de la cita -
>
> > - Mostrar texto de la cita -
>
> Hello, I have a similar problem in XP SP2; I have one nic pointed to
> 128.172.xxx.xxx for my intranet and the other one pointing to
> 200.44.xxx.xxx; I use the last one for internet and the first one for
> my intranet; however, in *order to browse my internal network, i have
> to disable de 200.44.xxx.xxx; i'd like to know can they coexist
> without having to disconnect one of them- Hide quoted text -
>
> - Show quoted text -

Your problem is completely different and should be a separate post!