Two networks...

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12 Jan 2009
Posts
51
Hello peeps

I currently have a 10/100 LAN, with a few computers on it. The main computers are my desktop and server.

Both the desktop and server have 2 x 1gb cards, and, as they are only a few feet apart, I have created a direct Ethernet link between them.

So, the desktop and server sit on the "Home" network via NIC #1, and are directly linked via NIC #2.

What I am trying to achieve is a 1gb transfer speed between the server and the desktop, without saturating the rest of the network (which will be upgraded to 1gb soon).

NIC #1 have been set-up using static IP, but I am not entirely sure how to set up NIC #2 on both machines to get what I want. They are currently set to obtain IP automatically.

I have also tried to bridge the networks, but I am not getting the transfer speeds I was expecting... they just sit at 10mb/s :confused:

Can anyone suggest a configuration? I have tried googling, but I just get general network setting up lol

Merry Christmas

=============
Windows 7 Pro etc...
 
I'm no networking expert but this may work but most likely not :)
Set each Nic2 IP address statically with a different subnet to your LAN, then access the shares via this assigned IP address.
 
It’s late (and post pub) so please forgive any inaccuracies…

You’ll need to assign static IP’s for the direct link. It’ll probably make life easier if you use a different subnet, but it shouldn’t matter.

You’ll also need to prioritise the network traffic by setting the interface metric values. It’ll be under TCP/IP advanced settings. Google should fill in the blanks.
 
As has been mentioned set the 2nd (1Gb) NIC's up with a static address from a different sub-net. If you use the same sub-net then traffic can still use the 1st NIC to reach the other machine as well. Setting the interface metric values wont make a difference if you use a different sub-net but if you use the same sub-net and set the metric then all of your traffic will use the 1Gb Nic.

Syngress
 
As said above.

Server NIC:
IP - 10.0.77.1
SNM - 255.255.255.252

Desktop NIC:
IP - 10.0.77.2
SNM - 255.255.255.252
 
so far I have tried all of the above, but, using network monitor gadgets, #1 is still being used for transfer.

these are my current netstats...

DESKTOP....

C:\Users\Demon>netstat -rn
===========================================================================
Interface List
12...00 04 4b 15 b1 19 ......NVIDIA nForce 10/100/1000 Mbps Ethernet #2
10...00 04 4b 15 b1 17 ......NVIDIA nForce 10/100/1000 Mbps Ethernet
1...........................Software Loopback Interface 1
11...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
17...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
13...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.10 276
10.0.77.0 255.255.255.0 On-link 10.0.77.2 261
10.0.77.2 255.255.255.255 On-link 10.0.77.2 261
10.0.77.255 255.255.255.255 On-link 10.0.77.2 261
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.10 276
192.168.1.10 255.255.255.255 On-link 192.168.1.10 276
192.168.1.255 255.255.255.255 On-link 192.168.1.10 276
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.10 276
224.0.0.0 240.0.0.0 On-link 10.0.77.2 261
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.10 276
255.255.255.255 255.255.255.255 On-link 10.0.77.2 261
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 192.168.1.1 Default
===========================================================================

IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
10 276 fe80::/64 On-link
12 266 fe80::/64 On-link
12 266 fe80::119:d42d:ea57:5a1b/128
On-link
10 276 fe80::6194:e5a1:9d8:7c81/128
On-link
1 306 ff00::/8 On-link
10 276 ff00::/8 On-link
12 266 ff00::/8 On-link
===========================================================================
Persistent Routes:
None

C:\Users\Demon>




SERVER.....

C:\Users\Server>netstat -rn
===========================================================================
Interface List
15...f8 d1 11 00 0b f9 ......Realtek RTL8169/8110 Family PCI Gigabit Ethern
IC (NDIS 6.20)
11...00 0e a6 3d e8 19 ......3Com 3C940 Gigabit LOM Ethernet Adapter
1...........................Software Loopback Interface 1
16...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
12...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
17...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.11 276
10.0.77.0 255.255.255.0 On-link 10.0.77.1 261
10.0.77.1 255.255.255.255 On-link 10.0.77.1 261
10.0.77.255 255.255.255.255 On-link 10.0.77.1 261
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.11 276
192.168.1.11 255.255.255.255 On-link 192.168.1.11 276
192.168.1.255 255.255.255.255 On-link 192.168.1.11 276
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.11 276
224.0.0.0 240.0.0.0 On-link 10.0.77.1 261
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.11 276
255.255.255.255 255.255.255.255 On-link 10.0.77.1 261
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 192.168.1.1 Default
===========================================================================

IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
1 306 ::1/128 On-link
11 276 fe80::/64 On-link
15 266 fe80::/64 On-link
11 276 fe80::69a7:fa10:68e4:9faf/128
On-link
15 266 fe80::f078:2e21:b816:21fc/128
On-link
1 306 ff00::/8 On-link
11 276 ff00::/8 On-link
15 266 ff00::/8 On-link
===========================================================================
Persistent Routes:
None

C:\Users\Server>




Both NICs are set with metric values of 5
 
Are you using the IP rather than the DNS name to get to the shares?

As your DNS server will be on the other subnet, the DNS name will always resolve to the 100mb LAN.

Browsing to the machine via \\10.x.x.x\$share should produce the results you're after... if windows doesn't do anything silly. :p.
 
Last edited:
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