Alternate IP

[Guest]

I have a small problem with the Alternate IP of Windows XP. At the office, I
need to have a fixed address IP for my laptop. Once Alternative Configuration
is configured, I tried to reach the Internet or my LAN (which is a domain
with no DHCP), and nothing is working. Windows seeks the DHCP and I would say
that it does not use the Alternative Configuration. I read on another post
that when the Alternative Configuration is used in a domain, there would be
other things to configure?!?

Somebody have an idea?
Thank you in advance!

 

[Chuck]

I have a small problem with the Alternate IP of Windows XP. At the office, I
need to have a fixed address IP for my laptop. Once Alternative Configuration
is configured, I tried to reach the Internet or my LAN (which is a domain
with no DHCP), and nothing is working. Windows seeks the DHCP and I would say
that it does not use the Alternative Configuration. I read on another post
that when the Alternative Configuration is used in a domain, there would be
other things to configure?!?

Somebody have an idea?
Thank you in advance!

Martin,

If you have a domain, how do you get name resolution there? You'll need name
resolution for both computers in the domain, and for the internet. Without a
DHCP server, all settings have to be made manually. How are the other computers
in the domain setup?

Windows XP uses DNS to locate Domain Controllers. You have to setup your DNS
properly.

1) Ensure that the laptop is configured to use the domain DNS server.

2) Ensure the domain DNS server is configured to permit dynamic updates. Ensure
the DNS server points to itself as a DNS server.

3) For internet resolution, specify your ISP's DNS server not on the individual
clients, but in the forwarders tab of the DNS server.

The following articles may provide more information:
Frequently Asked Questions About Windows 2000 DNS
http://support.microsoft.com/default.aspx?id=291382
Setting Up the Domain Name System for Active Directory
http://support.microsoft.com/default.aspx?id=237675
HOW TO: Configure DNS for Internet Access in Windows 2000
http://support.microsoft.com/default.aspx?id=300202

--
Cheers,
Chuck
Paranoia is not necessarily a bad thing - it comes from experience.
My email is AT DOT
actual address pchuck sonic net.

 

[Guest]

If you have a domain, how do you get name resolution there? You'll need name
resolution for both computers in the domain, and for the internet. Without a
DHCP server, all settings have to be made manually. How are the other computers
in the domain setup?

Windows XP uses DNS to locate Domain Controllers. You have to setup your DNS
properly.

1) Ensure that the laptop is configured to use the domain DNS server.

2) Ensure the domain DNS server is configured to permit dynamic updates. Ensure
the DNS server points to itself as a DNS server.

3) For internet resolution, specify your ISP's DNS server not on the individual
clients, but in the forwarders tab of the DNS server.

All the computers on the network has Static IP. All computer's DNS are
pointing to the DNS server (the only one we have) and it is pointing to
itself too, and Dynamic Updates is enabled. The DNS server is also pointing
to the DSN of our ISP.

For the alternate IP of the laptop, I've written down exactly the same
TCP/IP configuration that I'm using for the laptop to work on the network
without using the alternate IP, but with no result... I can't understand why.
The first page for TCP/IP is configured to use DHCP. But the client is not to
find a DHCP server on the network since there's none, it should jump to the
alternate IP but still.......

Thanks again!

 

[Chuck]

All the computers on the network has Static IP. All computer's DNS are
pointing to the DNS server (the only one we have) and it is pointing to
itself too, and Dynamic Updates is enabled. The DNS server is also pointing
to the DSN of our ISP.

For the alternate IP of the laptop, I've written down exactly the same
TCP/IP configuration that I'm using for the laptop to work on the network
without using the alternate IP, but with no result... I can't understand why.
The first page for TCP/IP is configured to use DHCP. But the client is not to
find a DHCP server on the network since there's none, it should jump to the
alternate IP but still.......

Thanks again!

Martin,

So is the problem fixed? If not, maybe I'm not understanding the problem. What
is the purpose of using the alternate configuration? Under what conditions is
the primary configuration used?

 

[Guest]

Martin,

So is the problem fixed? If not, maybe I'm not understanding the problem. What
is the purpose of using the alternate configuration? Under what conditions is
the primary configuration used?

The primary configuration is used at home to connect to an ISP that is using
DHCP (like every provider of High-Speed Internet). The Alternate IP is used
here at the office to connect to the domain. That's where the laptop needs a
Static IP with DNS, Gateway, etc... So when the user want to use Internet at
home, he simply connect the laptop to the modem and the DHCP receive a TCP/IP
conf. from the ISP. When at the office, the laptop will try to reach a DHCP
server without success and then try to use the Alternate IP that is fix.
Reading what people say, it should not be hard to configure...

Thank you for your time. I'll try that again and if I succeed, I'll let you
know but I don't have too much faith...

Martin

 

[Chuck]

The primary configuration is used at home to connect to an ISP that is using
DHCP (like every provider of High-Speed Internet). The Alternate IP is used
here at the office to connect to the domain. That's where the laptop needs a
Static IP with DNS, Gateway, etc... So when the user want to use Internet at
home, he simply connect the laptop to the modem and the DHCP receive a TCP/IP
conf. from the ISP. When at the office, the laptop will try to reach a DHCP
server without success and then try to use the Alternate IP that is fix.
Reading what people say, it should not be hard to configure...

Thank you for your time. I'll try that again and if I succeed, I'll let you
know but I don't have too much faith...

Martin

Martin,

Give us a chance and keep trying. This sort of problem comes up occasionally,
and with enough patience and persistence, we can usually solve it.

If the Alternate configuration tab won't do the job, one of these third party
programs may let you store multiple network configurations and switch between
them easily:

Mobile Net Switch
http://www.mobilenetswitch.com

MultiNetwork Manager
http://www.globesoft.com/mnm_home.html

NetSwitcher
http://www.netswitcher.com

 

[Guest]

Martin,

Give us a chance and keep trying. This sort of problem comes up occasionally,
and with enough patience and persistence, we can usually solve it.

If the Alternate configuration tab won't do the job, one of these third party
programs may let you store multiple network configurations and switch between
them easily:

Mobile Net Switch
http://www.mobilenetswitch.com

MultiNetwork Manager
http://www.globesoft.com/mnm_home.html

NetSwitcher
http://www.netswitcher.com

I've just saw something that might be interesting (I know, I should have
check this earlier... ). But when I do all the TCP/IP configuration with
the Alternate IP, I'm doing an ipconfig /all and the IP adress that I see is
192.168.0.197, but it's suppose to be 192.168.110.116. It says that the DHCP
server is 192.168.0.1 but I have no computers configured with that IP
adress...

The computer is plugged on a Hub. When I'm disconnecting the Hub from the
network and doing an Ipconfig /renew, it is using the Alternate IP like it's
suppose to do!!! I really don't understand what's happening... If only there
was 192.110.0.0 subnets on the network, it could help finding the problem but
there's only 192.168.110.0 and 10.0.0.0 subnets.

 

[Chuck]

I've just saw something that might be interesting (I know, I should have
check this earlier... ). But when I do all the TCP/IP configuration with
the Alternate IP, I'm doing an ipconfig /all and the IP adress that I see is
192.168.0.197, but it's suppose to be 192.168.110.116. It says that the DHCP
server is 192.168.0.1 but I have no computers configured with that IP
adress...

The computer is plugged on a Hub. When I'm disconnecting the Hub from the
network and doing an Ipconfig /renew, it is using the Alternate IP like it's
suppose to do!!! I really don't understand what's happening... If only there
was 192.110.0.0 subnets on the network, it could help finding the problem but
there's only 192.168.110.0 and 10.0.0.0 subnets.

Martin,

If your network doesn't have an official DHCP server, but this computer is
getting DHCP service from 192.168.0.1, then someone on the network has a rogue
NAT router plugged in. Maybe a WiFi router?

There's your problem anyway. Wrong subnet, leading to no internet connectivity
thru the gateway.

 

[Guest]

If your network doesn't have an official DHCP server, but this computer is
getting DHCP service from 192.168.0.1, then someone on the network has a rogue
NAT router plugged in. Maybe a WiFi router?

There's your problem anyway. Wrong subnet, leading to no internet connectivity
thru the gateway.

I finally found the problem!! It was a forgotten router that was used as
a switch on a computer and a network printer. I disabled DHCP and now
everything's ok. Thanks again for helping me !!

Martin

 

[Chuck]

I finally found the problem!! It was a forgotten router that was used as
a switch on a computer and a network printer. I disabled DHCP and now
everything's ok. Thanks again for helping me !!

Martin

Aha! The old forgotten router! Thanks for updating us!!