Connecting two networks together by having two network cards in the same computer

[Surfrat]

Hi,

I recently aquired two 100Mbs cards and I am trying to incorporate
them in my existing network at home. My old network looks as follows:

10Mbs 10Mbs
Mountainman ------------- Surfrat --------
Win XP Win 98SE |
192.168.0.1 192.168.0.2 |
255.255.255.0 255.255.255.0 |
|
|---------------------------------------------|
|
| 10Mbs
|- Jukebox ---------------- Jukebox 2
Win 98SE Win 98SE
192.168.0.3 192.168.0.5
255.255.255.0 255.255.255.0


I have installed the two 100Mbs cards into Mountainman and Surfrat as
follows:


100Mbs
Mountainman -------- Surfrat
Win XP Win 98SE
192.168.0.1 192.168.0.20 (100 Mbs card)
255.255.255.0 255.255.255.0(100 Mbs card)
192.168.0.2 (100 Mbs card gateway)
10Mbs
192.168.0.2 (10 Mbs card) ----------|
255.255.255.0(10 Mbs card) |
192.168.0.20 (10 Mbs card gateway) |
|
|------------------------------------------------------------|
|
| 10Mbs
| -- Jukebox ---------------- Jukebox 2
Win 98SE Win 98SE
192.168.0.3 192.168.0.5
255.255.255.0 255.255.255.0


The result of this is that the 10Mbs network can all see each other.
Mountainman can only see Surfrat and not the others. Surfrat cannot
see Mountainman.

Please help me to configure this so all the PC's can see each other.

Thanks

SurfRat.

 

[Steve Winograd [MVP]]

Hi,

I recently aquired two 100Mbs cards and I am trying to incorporate
them in my existing network at home. My old network looks as follows:

10Mbs 10Mbs
Mountainman ------------- Surfrat --------
Win XP Win 98SE |
192.168.0.1 192.168.0.2 |
255.255.255.0 255.255.255.0 |
|
|---------------------------------------------|
|
| 10Mbs
|- Jukebox ---------------- Jukebox 2
Win 98SE Win 98SE
192.168.0.3 192.168.0.5
255.255.255.0 255.255.255.0


I have installed the two 100Mbs cards into Mountainman and Surfrat as
follows:


100Mbs
Mountainman -------- Surfrat
Win XP Win 98SE
192.168.0.1 192.168.0.20 (100 Mbs card)
255.255.255.0 255.255.255.0(100 Mbs card)
192.168.0.2 (100 Mbs card gateway)
10Mbs
192.168.0.2 (10 Mbs card) ----------|
255.255.255.0(10 Mbs card) |
192.168.0.20 (10 Mbs card gateway) |
|
|------------------------------------------------------------|
|
| 10Mbs
| -- Jukebox ---------------- Jukebox 2
Win 98SE Win 98SE
192.168.0.3 192.168.0.5
255.255.255.0 255.255.255.0


The result of this is that the 10Mbs network can all see each other.
Mountainman can only see Surfrat and not the others. Surfrat cannot
see Mountainman.

Please help me to configure this so all the PC's can see each other.

Thanks

SurfRat.

Did you see the reply that I posted yesterday? In case you didn't,
I'm repeating it here:

If I understand your diagram, Surfrat has two network cards with IP
addresses in the same subnet. That's bound to cause problems, because
Surfrat will only be able to use one of the cards. That's why it can
only see the 10Mbs computers.

You could assign the two network cards to different subnets (e.g.
192.168.0.x and 192.168.1.x), but you'd also need to run routing
software on Surfrat and create LMHOSTS files on all of the other
computers to define the mapping of computer names to IP addresses
across the subnets.

A better solution is to move the 10Mbs network card from Surfrat to
Mountainman and create a network bridge on Mountainman. That will
combine the two physical networks into one logical network, with one
subnet, allowing all of the computers to access each other. I've
written a web page with details:

XP ICS - Network Bridge
http://www.practicallynetworked.com/sharing/xp_ics/networkbridge.htm

One additional comment that I didn't post previously: I see that
you've set each network card on Surfrat to be the default gateway for
the other computer. I'm not sure why you did it, but it won't enable
routing between the two cards. The default gateway is the IP address
used to contact all IP addresses that aren't on a local subnet. It's
typically used to contact Internet sites. It isn't possible for two
network cards to perform that function for each other.
--
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

 

[Surfrat]

Did you see the reply that I posted yesterday? In case you didn't,
I'm repeating it here:

If I understand your diagram, Surfrat has two network cards with IP
addresses in the same subnet. That's bound to cause problems, because
Surfrat will only be able to use one of the cards. That's why it can
only see the 10Mbs computers.

You could assign the two network cards to different subnets (e.g.
192.168.0.x and 192.168.1.x), but you'd also need to run routing
software on Surfrat and create LMHOSTS files on all of the other
computers to define the mapping of computer names to IP addresses
across the subnets.

A better solution is to move the 10Mbs network card from Surfrat to
Mountainman and create a network bridge on Mountainman. That will
combine the two physical networks into one logical network, with one
subnet, allowing all of the computers to access each other. I've
written a web page with details:

XP ICS - Network Bridge
http://www.practicallynetworked.com/sharing/xp_ics/networkbridge.htm

One additional comment that I didn't post previously: I see that
you've set each network card on Surfrat to be the default gateway for
the other computer. I'm not sure why you did it, but it won't enable
routing between the two cards. The default gateway is the IP address
used to contact all IP addresses that aren't on a local subnet. It's
typically used to contact Internet sites. It isn't possible for two
network cards to perform that function for each other.
--
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

Hi Steve,

Thanks for you help. I have managed to get Mountainman to see Surfrat
in both directions following your suggestions but Mountainman cannot
see the other 10Mbs PC's. I am going to try network bridging and
install two cards in mountainman.

Thanks...

 

[Surfrat]

Hi,

I have taken your advice and installed both the 100Mbs and 10Mbs card
in the XP machine Mountainman.
Without bridging the two segments work fine and only Mountainman can
see both networks. I then enabled
bridging and it killed the network completely. None of the PC's could
not see each other. I see that the
bridge has an IP address itself and the IP's of the two installed
cards inside Mountainman are
hidden/disabled. Should the bridge be given an adrees and if so what
should it be?

The new config is as follows and do you have any suggestions on a fix.

100Mbs
Mountainman ---------- Surfrat
Win XP Win 98SE
192.168.0.1 (100 Mbs) 192.168.0.2
255.255.255.0(100 Mbs) 255.255.255.0

192.168.1.1 (10 Mbs) ----------|
255.255.255.0(10 Mbs) |
10Mbs |
|---------------------------------|
|
| 10Mbs
| -- Jukebox ---------------- Jukebox 2
Win 98SE Win 98SE
192.168.1.2 192.168.1.3
255.255.255.0 255.255.255.0


Thanks

SurfRat.

 

[Steve Winograd [MVP]]

Hi,

I have taken your advice and installed both the 100Mbs and 10Mbs card
in the XP machine Mountainman.
Without bridging the two segments work fine and only Mountainman can
see both networks. I then enabled
bridging and it killed the network completely. None of the PC's could
not see each other. I see that the
bridge has an IP address itself and the IP's of the two installed
cards inside Mountainman are
hidden/disabled. Should the bridge be given an adrees and if so what
should it be?

The new config is as follows and do you have any suggestions on a fix.

100Mbs
Mountainman ---------- Surfrat
Win XP Win 98SE
192.168.0.1 (100 Mbs) 192.168.0.2
255.255.255.0(100 Mbs) 255.255.255.0

192.168.1.1 (10 Mbs) ----------|
255.255.255.0(10 Mbs) |
10Mbs |
|---------------------------------|
|
| 10Mbs
| -- Jukebox ---------------- Jukebox 2
Win 98SE Win 98SE
192.168.1.2 192.168.1.3
255.255.255.0 255.255.255.0


Thanks

SurfRat.

The network bridge combines two physical networks into one logical
network. Assign the same subnet to all of the computers in both
physical networks and to the network bridge. Use either 192.168.0.x
or 192.168.1.x, but not both.

If that doesn't get everything working, please see this Microsoft
Knowledge Base article for a possible fix:

Bridge May Not Work With a Non-Promiscuous Mode Network Adapter
http://support.microsoft.com/?id=302348

For more information on the network bridge, please see my web page:

XP ICS - Network Bridge
http://www.practicallynetworked.com/sharing/xp_ics/networkbridge.htm
--
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

 

[Surfrat]

Hi Steve,

Thanks very much for all your help. It is working 100% )))
I had to apply the fix "Bridge May Not Work With a Non-Promiscuous
Mode Network Adapter" on both network adapters. My final configuration
is as follows:

Mountainman Surfrat
Win XP Win 98SE
192.168.0.1 (Bridge) |- 192.168.0.4
255.255.255.0 (Bridge) | 255.255.255.0
|
192.168.0.2 (100 Mbs) --| 100Mbs
255.255.255.0(100 Mbs)

192.168.0.3 (10 Mbs) ---|
255.255.255.0 (10 Mbs) |
| 10Mbs
|--------------------------|
|
|
| Jukebox Jukebox 2
| Win 98SE 10Mbs Win 98SE
|--- 192.168.0.5 ------------ 192.168.0.6
255.255.255.0 255.255.255.0

Thanks for your trouble...
If you were in Cape Town South Africa I would buy you a beer

Cheers

SurfRat.

 

[Steve Winograd [MVP]]

The network bridge combines two physical networks into one logical
network. Assign the same subnet to all of the computers in both
physical networks and to the network bridge. Use either 192.168.0.x
or 192.168.1.x, but not both.

If that doesn't get everything working, please see this Microsoft
Knowledge Base article for a possible fix:

Bridge May Not Work With a Non-Promiscuous Mode Network Adapter
http://support.microsoft.com/?id=302348

For more information on the network bridge, please see my web page:

XP ICS - Network Bridge
http://www.practicallynetworked.com/sharing/xp_ics/networkbridge.htm

Hi Steve,

Thanks very much for all your help. It is working 100% )))
I had to apply the fix "Bridge May Not Work With a Non-Promiscuous
Mode Network Adapter" on both network adapters. My final configuration
is as follows:

Mountainman Surfrat
Win XP Win 98SE
192.168.0.1 (Bridge) |- 192.168.0.4
255.255.255.0 (Bridge) | 255.255.255.0
|
192.168.0.2 (100 Mbs) --| 100Mbs
255.255.255.0(100 Mbs)

192.168.0.3 (10 Mbs) ---|
255.255.255.0 (10 Mbs) |
| 10Mbs
|--------------------------|
|
|
| Jukebox Jukebox 2
| Win 98SE 10Mbs Win 98SE
|--- 192.168.0.5 ------------ 192.168.0.6
255.255.255.0 255.255.255.0

Thanks for your trouble...
If you were in Cape Town South Africa I would buy you a beer

Cheers

SurfRat.[/QUOTE]

You're welcome, SurfRat. I'm glad that my suggestions helped you get
everything working.
--
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