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Problem with a fixed-IP address in the LAN



 
 
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  #1  
Old December 18th 05, 12:22 PM posted to microsoft.public.win98.networking
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Default Problem with a fixed-IP address in the LAN

I have a wired LAN and router with integrated switch.
The network is configured as peer-to-peer windows workgroup with many
different systems: WinXP, NT4, Win2000, Win95 and Win98SE.

The router offers DHCP featu thus I have configured some PCs in order
to get automatically the IP address, some other PCs must have instead a
fixed IP. Well till now all work fine.

I have now a Win98SE notebook: it works in the LAN only if I set "Obtain
an IP address automatically".
On the other hand if I set "Specify an IP address" and give a compatible
address I cannot access shared resource in the LAN. I can see the are PC
of the LAN in explorer "network neighborhood", but if I click on the
PC-name then I get no access. Moreover from a DOS box I cannot ping the
other PCs.

I tried changing the IP address (using always free addresses), but I got
no results. In my LAN I have other win95 and win98 PCs with fixed
IP-address. I repeated for this notebook the same network configuration
as for those Win9x PCs, but i do not understand why it does work only
with automatic IP and not with fixed IP-Address.

Any suggestion?

Thank you for replying.
Gio
  #2  
Old December 19th 05, 03:38 AM posted to microsoft.public.win98.networking
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Default Problem with a fixed-IP address in the LAN

Giobibo wrote:

I have a wired LAN and router with integrated switch.
The network is configured as peer-to-peer windows workgroup with many
different systems: WinXP, NT4, Win2000, Win95 and Win98SE.

The router offers DHCP featu thus I have configured some PCs in order
to get automatically the IP address, some other PCs must have instead a
fixed IP. Well till now all work fine.

I have now a Win98SE notebook: it works in the LAN only if I set "Obtain
an IP address automatically".
On the other hand if I set "Specify an IP address" and give a compatible
address I cannot access shared resource in the LAN. I can see the are PC
of the LAN in explorer "network neighborhood", but if I click on the
PC-name then I get no access. Moreover from a DOS box I cannot ping the
other PCs.

I tried changing the IP address (using always free addresses), but I got
no results. In my LAN I have other win95 and win98 PCs with fixed
IP-address. I repeated for this notebook the same network configuration
as for those Win9x PCs, but i do not understand why it does work only
with automatic IP and not with fixed IP-Address.

Any suggestion?

Thank you for replying.
Gio


Perhaps you entered an incompatible netmask.

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  #3  
Old December 19th 05, 03:38 AM posted to microsoft.public.win98.networking
CJT
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Posts: 81
Default Problem with a fixed-IP address in the LAN

Giobibo wrote:

I have a wired LAN and router with integrated switch.
The network is configured as peer-to-peer windows workgroup with many
different systems: WinXP, NT4, Win2000, Win95 and Win98SE.

The router offers DHCP featu thus I have configured some PCs in order
to get automatically the IP address, some other PCs must have instead a
fixed IP. Well till now all work fine.

I have now a Win98SE notebook: it works in the LAN only if I set "Obtain
an IP address automatically".
On the other hand if I set "Specify an IP address" and give a compatible
address I cannot access shared resource in the LAN. I can see the are PC
of the LAN in explorer "network neighborhood", but if I click on the
PC-name then I get no access. Moreover from a DOS box I cannot ping the
other PCs.

I tried changing the IP address (using always free addresses), but I got
no results. In my LAN I have other win95 and win98 PCs with fixed
IP-address. I repeated for this notebook the same network configuration
as for those Win9x PCs, but i do not understand why it does work only
with automatic IP and not with fixed IP-Address.

Any suggestion?

Thank you for replying.
Gio


Perhaps you entered an incompatible netmask.

--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form .
  #4  
Old December 19th 05, 09:28 AM posted to microsoft.public.win98.networking
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Posts: n/a
Default Problem with a fixed-IP address in the LAN


Perhaps you entered an incompatible netmask.


Sure this PC is not clashing with one given the same IP address through
DHCP?

Also, did you know that you can get DHCP to reserve a specific address for a
specific machine (actually specific MAC address on the network card in that
machine)? This can allow you to set all machines the "DHCP" but ensure that
specific machines always get the same IP address.

Paul DS.


  #5  
Old December 19th 05, 09:28 AM posted to microsoft.public.win98.networking
Paul D.Smith
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Posts: 15
Default Problem with a fixed-IP address in the LAN


Perhaps you entered an incompatible netmask.


Sure this PC is not clashing with one given the same IP address through
DHCP?

Also, did you know that you can get DHCP to reserve a specific address for a
specific machine (actually specific MAC address on the network card in that
machine)? This can allow you to set all machines the "DHCP" but ensure that
specific machines always get the same IP address.

Paul DS.


  #6  
Old December 19th 05, 09:42 AM posted to microsoft.public.win98.networking
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Posts: n/a
Default Problem with a fixed-IP address in the LAN

CJT wrote:

Perhaps you entered an incompatible netmask.


No, the netmask is the right one, as in all other PCs of the LAN.

  #7  
Old December 19th 05, 09:42 AM posted to microsoft.public.win98.networking
Giobibo
external usenet poster
 
Posts: 7
Default Problem with a fixed-IP address in the LAN

CJT wrote:

Perhaps you entered an incompatible netmask.


No, the netmask is the right one, as in all other PCs of the LAN.

  #8  
Old December 19th 05, 09:49 AM posted to microsoft.public.win98.networking
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Default Problem with a fixed-IP address in the LAN

Paul D.Smith wrote:
Perhaps you entered an incompatible netmask.



Sure this PC is not clashing with one given the same IP address through
DHCP?


No, I am sure, the IP I choose is a free one.


Also, did you know that you can get DHCP to reserve a specific address for a
specific machine (actually specific MAC address on the network card in that
machine)? This can allow you to set all machines the "DHCP" but ensure that
specific machines always get the same IP address.



No, I did not know (anyway I cannot find this feature in moy router).
But I do not think it could help, because for that notebook I need the
setting "Specify an IP address" and not "Obtain an IP address
automatically" because the notebook will be used in other LAN whitout
DHCP too.


  #9  
Old December 19th 05, 09:49 AM posted to microsoft.public.win98.networking
Giobibo
external usenet poster
 
Posts: 7
Default Problem with a fixed-IP address in the LAN

Paul D.Smith wrote:
Perhaps you entered an incompatible netmask.



Sure this PC is not clashing with one given the same IP address through
DHCP?


No, I am sure, the IP I choose is a free one.


Also, did you know that you can get DHCP to reserve a specific address for a
specific machine (actually specific MAC address on the network card in that
machine)? This can allow you to set all machines the "DHCP" but ensure that
specific machines always get the same IP address.



No, I did not know (anyway I cannot find this feature in moy router).
But I do not think it could help, because for that notebook I need the
setting "Specify an IP address" and not "Obtain an IP address
automatically" because the notebook will be used in other LAN whitout
DHCP too.


  #10  
Old December 19th 05, 11:40 AM posted to microsoft.public.win98.networking
Paul D.Smith
external usenet poster
 
Posts: 15
Default Problem with a fixed-IP address in the LAN

Comments below.

Paul DS.

"Giobibo" wrote in message
...
Paul D.Smith wrote:
Perhaps you entered an incompatible netmask.



Sure this PC is not clashing with one given the same IP address through
DHCP?


No, I am sure, the IP I choose is a free one.


Also, did you know that you can get DHCP to reserve a specific address

for a
specific machine (actually specific MAC address on the network card in

that
machine)? This can allow you to set all machines the "DHCP" but ensure

that
specific machines always get the same IP address.



No, I did not know (anyway I cannot find this feature in moy router).
But I do not think it could help, because for that notebook I need the
setting "Specify an IP address" and not "Obtain an IP address
automatically" because the notebook will be used in other LAN whitout
DHCP too.



Lets say your router assigned 192.168.0.X (quite common). What IP address
have you given the PC? If it is not a "192.168.0.X" style address, it
probably won't work because your router will look at the address and the
address mask (255.255.255.0 commonly) and then dump any packets that don't
match.

So you need to make sure that your static address matches the subnet of the
router. If this means that it must look like a DHCP address, then you
should both provide a static IP address and also ensure that your router
does not assign that address to another PC.

What is the netmask and IP address you are using, and if you request DHCP,
what IP address and netmask does the router assign? Knowing these might
help the NG readers help you further.

Paul DS.


 




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