Vista with Multiple Network Adaptors

[Dan Jason]

Hello,

I have recently installed Vista on my desktop PC which seems to be having
Internet Connection problems. My Desktop PC has 2 Network Adaptors each
connected to separate routers. I have one router (A) with IP 192.168.1.1 on
Adaptor A and another router (B) with IP 192.168.2.1 on Adaptor B. The only
router with Internet Access is router B. The problem I have is when I open
internet explorer it seems to take a very long time to display the home page,
and some times it times-out completely. If I open up a command prompt and
type tracert www.google.com, the first line that comes up is 192.168.1.1 -
This implies that it is trying to get to google via Router A which has no
Internet access. I can only guess then it gives up after some time and tries
the second Network Connection.

Is there any way I can set Vista so that it looks for Internet Access on
Router B first, and not Router A? I've tried various things such as changing
the Network Binding order Under Advanced in Network Connections but this does
not help.

This did not happen under XP - XP seemed to know which Adaptor had Internet
Access without a delay/timeout.

Any suggestions would be greatly appreciated.

 

[Robert L. \(MS-MVP\)]

Sounds like routing issue. Posting the result of ipconfig /all here may
help.

RoutingAnalysis 1: before changing the route table, any computers in
192.168.2.0 can access the resources on 10.0.0.0 network and the Internet
because all traffic ...
www.chicagotech.net/routing.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[Dan Jason]

Thanks for your help - The routing page implies I need to change the routing
table - how do I accomplish this? My IP Config /all results are included...

Windows IP Configuration

Host Name . . . . . . . . . . . . : ALPHA
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home

Ethernet adapter Local Area Connection 2:

Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast
Ethernet
NIC #2
Physical Address. . . . . . . . . : 00-0E-2E-CC-E9-BF
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.2.100(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 25 February 2008 21:50:10
Lease Expires . . . . . . . . . . : 26 February 2008 21:50:09
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast
Ethernet
NIC
Physical Address. . . . . . . . . : 00-11-09-E8-88-D6
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 25 February 2008 21:50:10
Lease Expires . . . . . . . . . . : 26 February 2008 21:50:09
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 6:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 7:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . :
isatap.{101934F1-2F91-44D4-902E-4AA5CBA06
8B2}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : isatap.home
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes


Some more googling pointed me in the direction of the netsh command, is this
how I would change the routing table?

Thanks for you help

 

[Robert L. \(MS-MVP\)]

The problem is the multihomed computer with two default gateways. Check this
link for more details.

issues of a multihomed computer with two NICsIssues of a multihomed computer
with two gateways. Case 1: The client setup a Windows ... Removing the LAN
default gateway 192.168.0.1 fixed the problem. ...
www.chicagotech.net/Routers/2gateway2.htm


--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[Dan Jason]

Ah nice one - the link pointed me in the direction of the route command - all
I had to do was:

ROUTE DELETE 0.0.0.0 MASK 0.0.0.0 192.168.1.1

The multihomed PC can now access the internet with no delays, and I can
still get access to all the local stuff on the LAN connected to the other
adaptor - thanks for your help

 

[Robert L. \(MS-MVP\)]

Thank you for the update.

--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[Robert L. \(MS-MVP\)]

thank you for the feedback.

--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com