routing with dual-homed pc

[Guest]

will windows xp automatically route between two LANs if it has a NIC for each
LAN? if so, how do i disable this functionality? thanks.

 

[Steve Winograd [MVP]]

will windows xp automatically route between two LANs if it has a NIC for each
LAN? if so, how do i disable this functionality? thanks.

By default, XP doesn't automatically route between them. If you want
routing, you have to explicitly enable it. This Microsoft Knowledge
Base article has details:

How to Enable TCP/IP Forwarding in Windows XP
http://support.microsoft.com/Default.aspx?kbid=315236
--
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

 

[Jack \(MVP-Networking\).]

Hi
Routing with Dual NICs as to be specifically set. It can be done with, ICS
or if there is already a Router and DHCP on one end, by using WinXP Bridging
capacity. If one of these two is not set there would not be Routing across
the two LANs.
Jack (MVP-Networking).

 

[Guest]

I tried to enable IP forwarding as specified, but it doesn't work.

C:\>ipconfig /all

Windows IP-konfiguration

Værtsnavn. . . . . . . . . . . . . . . . . . : Niklas
Primært DNS-suffiks. . . . . . . . . . . . . :
Nodetype . . . . . . . . . . . . . . . . . . : Ukendt
IP-routing aktiveret . . . . . . . . . . . . : Ja
WINS-proxy aktiveret . . . . . . . . . . . . : Nej

Ethernet-netværkskort LAN-forbindelse:

Forbindelsesspecifikt DNS-suffiks. . . . . . :
Beskrivelse. . . . . . . . . . . . . . . . . : SiS 900-Based PCI Fast
Ethernet Adapter
Fysisk adresse . . . . . . . . . . . . . . . : 00-16-36-35-EB-6A
Dhcp aktiveret . . . . . . . . . . . . . . . : Nej
IP-adresse . . . . . . . . . . . . . . . . . : 192.168.3.3
Undernetmaske. . . . . . . . . . . . . . . . : 255.255.255.0
Standardgateway. . . . . . . . . . . . . . . :

Ethernet-netværkskort Trådløs netværksforbindelse:

Forbindelsesspecifikt DNS-suffiks. . . . . . :
Beskrivelse. . . . . . . . . . . . . . . . . : Broadcom 802.11g
Netværkskort
Fysisk adresse . . . . . . . . . . . . . . . : 00-16-CE-39-F8-33
Dhcp aktiveret . . . . . . . . . . . . . . . : Ja
Automatisk konfiguration aktiveret . . . . . : Ja
IP-adresse . . . . . . . . . . . . . . . . . : 192.168.1.100
Undernetmaske. . . . . . . . . . . . . . . . : 255.255.255.0
Standardgateway. . . . . . . . . . . . . . . : 192.168.1.98
DHCP-server. . . . . . . . . . . . . . . . . : 192.168.1.98
DNS-servere. . . . . . . . . . . . . . . . . : 212.242.40.3
212.242.40.51
Rettigheden opnået . . . . . . . . . . . . . : 13. august 2006 14:23:26
Rettigheden udløber. . . . . . . . . . . . . : 16. august 2006 14:23:26

C:\>route print
===========================================================================
Liste over grænseflader
0x1 ........................... MS TCP Loopback interface
0x2 ...00 16 36 35 eb 6a ...... SiS 900-Based PCI Fast Ethernet Adapter -
Miniport til Packet Scheduler
0x10004 ...00 16 ce 39 f8 33 ...... Broadcom 802.11g Netvµrkskort - Miniport
til
Packet Scheduler
===========================================================================
Aktive ruter:
Netværksdestination Netmaske Gateway Grænseflade Metric
0.0.0.0 0.0.0.0 192.168.1.98 192.168.1.100 25
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.1.0 255.255.255.0 192.168.1.100 192.168.1.100 25
192.168.1.100 255.255.255.255 127.0.0.1 127.0.0.1 25
192.168.1.255 255.255.255.255 192.168.1.100 192.168.1.100 25
192.168.3.0 255.255.255.0 192.168.3.3 192.168.3.3 20
192.168.3.3 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.3.255 255.255.255.255 192.168.3.3 192.168.3.3 20
224.0.0.0 240.0.0.0 192.168.1.100 192.168.1.100 25
224.0.0.0 240.0.0.0 192.168.3.3 192.168.3.3 20
255.255.255.255 255.255.255.255 192.168.1.100 192.168.1.100 1
255.255.255.255 255.255.255.255 192.168.3.3 192.168.3.3 1
Standardgateway: 192.168.1.98
===========================================================================
Vedvarende ruter:
Ingen

From host 192.168.3.4:
ping 192.168.3.3 works
ping 192.168.1.98 doesn't work (timeout)
All firewalls disabled.

Do you have any clues?

Thanks,
Anders

 

[Guest]

(Please see my response to Steve Winograd (above).)
I also tried creating a WinXP bridge, but didn't get it to work either. I
actually lost connection on both LANs. It seems like DHCP doesn't work any
longer:

C:\>ipconfig /all

Windows IP-konfiguration

Værtsnavn. . . . . . . . . . . . . . . . . . : Niklas
Primært DNS-suffiks. . . . . . . . . . . . . :
Nodetype . . . . . . . . . . . . . . . . . . : Ukendt
IP-routing aktiveret . . . . . . . . . . . . : Ja
WINS-proxy aktiveret . . . . . . . . . . . . : Nej

Ethernet-netværkskort Netværksbro (Netværksbro) 2:

Forbindelsesspecifikt DNS-suffiks. . . . . . :
Beskrivelse. . . . . . . . . . . . . . . . . : MAC-bro-miniport
Fysisk adresse . . . . . . . . . . . . . . . : 02-16-36-35-EB-6A
Dhcp aktiveret . . . . . . . . . . . . . . . : Ja
Automatisk konfiguration aktiveret . . . . . : Ja
IP-adresse . . . . . . . . . . . . . . . . . : 0.0.0.0
Undernetmaske. . . . . . . . . . . . . . . . : 0.0.0.0
Standardgateway. . . . . . . . . . . . . . . :
DHCP-server. . . . . . . . . . . . . . . . . : 0.0.0.0


Regards,
Anders