Accessing the LAN while connected to the internet

[Chrisb]

I have a small network with 4 computers running WinXP
Home & 1 running Win98. One of the XP home computers (the
ICS host) has Internet Connection Sharing configured and
the rest of the PC's are configured as clients to use the
shared internet connection.

There is also a Netgear print server on the network.

Now for the problem - The PC running ICS can access the
print server when it is not connected to the internet. As
soon as a connection to the internet is made the ICS host
can no longer print to the print server.

While the ICS host is online, it can still ping the print
server. The print server also has a web interface - used
for configuration - which the ICS host is unable to
access whilst online.

As soon as the Internet connection is dropped, the print
jobs that are queued are then printed.

Any suggestions?

[Steve Winograd]

In article >, "Chrisb"
> wrote:
>I have a small network with 4 computers running WinXP
>Home & 1 running Win98. One of the XP home computers (the
>ICS host) has Internet Connection Sharing configured and
>the rest of the PC's are configured as clients to use the
>shared internet connection.
>
>There is also a Netgear print server on the network.
>
>Now for the problem - The PC running ICS can access the
>print server when it is not connected to the internet. As
>soon as a connection to the internet is made the ICS host
>can no longer print to the print server.
>
>While the ICS host is online, it can still ping the print
>server. The print server also has a web interface - used
>for configuration - which the ICS host is unable to
>access whilst online.
>
>As soon as the Internet connection is dropped, the print
>jobs that are queued are then printed.
>
>Any suggestions?

Please reply to this message in the news group (not by E-mail) with
more information to help other people understand the problem. For
example:

What is the print server's IP address and subnet mask?

Can the client computers access the print server when the ICS host is
online?

Please include a copy of the host computer's route table made while
it's online. To write the route table to a file, go to a command
prompt and enter:

route print >route.txt
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

[Chrisb]

>-----Original Message-----
>In article <013b01c3347e$de833410
>, "Chrisb"
> wrote:
>>I have a small network with 4 computers running WinXP
>>Home & 1 running Win98. One of the XP home computers
(the
>>ICS host) has Internet Connection Sharing configured
and
>>the rest of the PC's are configured as clients to use
the
>>shared internet connection.
>>
>>There is also a Netgear print server on the network.
>>
>>Now for the problem - The PC running ICS can access the
>>print server when it is not connected to the internet.
As
>>soon as a connection to the internet is made the ICS
host
>>can no longer print to the print server.
>>
>>While the ICS host is online, it can still ping the
print
>>server. The print server also has a web interface -
used
>>for configuration - which the ICS host is unable to
>>access whilst online.
>>
>>As soon as the Internet connection is dropped, the
print
>>jobs that are queued are then printed.
>>
>>Any suggestions?
>
>Please reply to this message in the news group (not by E-
mail) with
>more information to help other people understand the
problem. For
>example:
>
>What is the print server's IP address and subnet mask?
>
>Can the client computers access the print server when
the ICS host is
>online?
>
>Please include a copy of the host computer's route table
made while
>it's online. To write the route table to a file, go to
a command
>prompt and enter:
>
> route print >route.txt
>--
>Best Wishes,
>Steve Winograd, MS-MVP (Windows Networking)
>
>Please post any reply as a follow-up message in the news
group
>for everyone to see. I'm sorry, but I don't answer
questions
>addressed directly to me in E-mail or news groups.
>
>Microsoft Most Valuable Professional Program
>http://mvp.support.microsoft.com
>.
The print servers IP address is 192.168.0.250 with a
netmask of 255.255.255.0 and all the other workstations
can print at any time regardless of the internet
connection status.

I'll get the routing table tomorrow

Thanks,

Chris

[Chrisb]

Here is the routing table
================================================== ========
=================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 40 2b 20 65 f8 ...... Realtek RTL8139 Family
PCI Fast Ethernet NIC - Packet Scheduler Miniport
0xa0004 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP)
Interface
================================================== ========
=================
================================================== ========
=================
Active Routes:
Network Destination Netmask Gateway
Interface Metric
0.0.0.0 0.0.0.0 192.168.0.1
192.168.0.1 21
0.0.0.0 0.0.0.0 203.164.32.177
203.164.32.177 1
127.0.0.0 255.0.0.0 127.0.0.1
127.0.0.1 1
192.168.0.0 255.255.255.0 192.168.0.1
192.168.0.1 20
192.168.0.1 255.255.255.255 127.0.0.1
127.0.0.1 20
192.168.0.255 255.255.255.255 192.168.0.1
192.168.0.1 20
203.164.32.177 255.255.255.255 127.0.0.1
127.0.0.1 50
203.164.32.254 255.255.255.255 203.164.32.177
203.164.32.177 1
203.164.32.255 255.255.255.255 203.164.32.177
203.164.32.177 50
224.0.0.0 240.0.0.0 192.168.0.1
192.168.0.1 20
224.0.0.0 240.0.0.0 203.164.32.177
203.164.32.177 1
255.255.255.255 255.255.255.255 192.168.0.1
192.168.0.1 1
Default Gateway: 203.164.32.177
================================================== ========
=================
Persistent Routes:
None

I have also found that all of the PC's can intermittently
print to the Netgear print server, but there doesn't seem
to be a pattern to it.

>-----Original Message-----
>In article <013b01c3347e$de833410
>, "Chrisb"
> wrote:
>>I have a small network with 4 computers running WinXP
>>Home & 1 running Win98. One of the XP home computers
(the
>>ICS host) has Internet Connection Sharing configured
and
>>the rest of the PC's are configured as clients to use
the
>>shared internet connection.
>>
>>There is also a Netgear print server on the network.
>>
>>Now for the problem - The PC running ICS can access the
>>print server when it is not connected to the internet.
As
>>soon as a connection to the internet is made the ICS
host
>>can no longer print to the print server.
>>
>>While the ICS host is online, it can still ping the
print
>>server. The print server also has a web interface -
used
>>for configuration - which the ICS host is unable to
>>access whilst online.
>>
>>As soon as the Internet connection is dropped, the
print
>>jobs that are queued are then printed.
>>
>>Any suggestions?
>
>Please reply to this message in the news group (not by E-
mail) with
>more information to help other people understand the
problem. For
>example:
>
>What is the print server's IP address and subnet mask?
>
>Can the client computers access the print server when
the ICS host is
>online?
>
>Please include a copy of the host computer's route table
made while
>it's online. To write the route table to a file, go to
a command
>prompt and enter:
>
> route print >route.txt
>--
>Best Wishes,
>Steve Winograd, MS-MVP (Windows Networking)
>
>Please post any reply as a follow-up message in the news
group
>for everyone to see. I'm sorry, but I don't answer
questions
>addressed directly to me in E-mail or news groups.
>
>Microsoft Most Valuable Professional Program
>http://mvp.support.microsoft.com
>.
>

[Steve Winograd]

In article >, "Chrisb"
> wrote:
>Here is the routing table
>=====================================
>Interface List
>0x1 ........................... MS TCP Loopback interface
>0x2 ...00 40 2b 20 65 f8 ...... Realtek RTL8139 Family
>PCI Fast Ethernet NIC - Packet Scheduler Miniport
>0xa0004 ...00 53 45 00 00 00 ...... WAN (PPP/SLIP)
>Interface
>======================================
>Active Routes:
>Network Destination Netmask Gateway Interface Metric
> 0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.1 21
> 0.0.0.0 0.0.0.0 203.164.32.177 203.164.32.177 1
> 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
> 192.168.0.0 255.255.255.0 192.168.0.1 192.168.0.1 20
> 192.168.0.1 255.255.255.255 127.0.0.1 127.0.0.1 20
> 192.168.0.255 255.255.255.255 192.168.0.1 192.168.0.1 20
> 203.164.32.177 255.255.255.255 127.0.0.1 127.0.0.1 50
> 203.164.32.254 255.255.255.255 203.164.32.177 203.164.32.177 1
> 203.164.32.255 255.255.255.255 203.164.32.177 203.164.32.177 50
> 224.0.0.0 240.0.0.0 192.168.0.1 192.168.0.1 20
> 224.0.0.0 240.0.0.0 203.164.32.177 203.164.32.177 1
> 255.255.255.255 255.255.255.255 192.168.0.1 192.168.0.1 1
>Default Gateway: 203.164.32.177
>======================================
>Persistent Routes:
> None
>
>I have also found that all of the PC's can intermittently
>print to the Netgear print server, but there doesn't seem
>to be a pattern to it.

Thanks for posting the route table. I'm not sure what the problem is
with the ICS host accessing the print server at 192.168.0.250.
However, I don't understand the first route in the table:

0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.1 21

That's a default route indicating that the computer is its own default
gateway. There should be no default gateway specified on the ICS
host's local area network connection, and ICS itself doesn't create
one.

The second line is a default route using a dial-up connection, which
is what I'd expect. It overrides the first default route.

The next time that you dial into the Internet and the print server
problem occurs, go to a command prompt and enter this command to see
the route table:

route print

Note the IP address (let's call it w.x.y.z) that it shows for the
dial-up connection. In the example above, it's 203.164.32.177.

Then, enter this command to remove the dial-up default gateway, and
try accessing the print server:

route change 0.0.0.0 mask 0.0.0.0 192.168.0.1

Then, enter this command

route change 0.0.0.0 mask 0.0.0.0 w.x.y.z

to restore the dial-up default route, and try accessing the print
server.

Are you sure that the print server's IP address is 192.168.0.250? If
it were something like 192.168.x.y, where "x" isn't zero, I'd
understand the situation better.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com