Traffic control

smuggler.ie

Hello experts
Some advice needed
Wonder if could get advice how to control LAN traffic in this setup:

Net1: PC1NIC1(PCIe1Gbps,192.168.2.10/24) <-to-> SWITCH1(1Gbps) <-to-> PC2NIC1(PCIe1Gbps,192.168.2.10/24)(this network: static IP, No DHCP, No DNS, No DefGateway)

Net2: PC1NIC2(buildin100Mbps,192.168.1.x/24) <-to-> SWITCH2(1Gbps) <-to-> PC2NIC2(buildin1Gbps,192.168.1.x/24)(this network: dynamic IP, DHCP, DNS, Gateway)

I would like to have PC1toPC2 traffic to go on Net1 only, and PC1,PC2 to internet to go on Net2 only. As soon Net2 comes alive all go there.
Thanks in advance.

roast

Assuming it's windows, you can set static routes by the interface for the Net1 subnet.
https://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/route.mspx?mfr=true

something like this for PC1

route ADD 192.168.2.0/24 MASK 255.255.255.0 192.168.2.x if 192.168.2.10

The default route (through 192.168.1.0/24) will take care of all the rest of the traffic

Same theory for linux. Or, if you have a router in the mix, you can just set up static routes on that instead.

Cuddlesworth

roast wrote: »

Assuming it's windows, you can set static routes by the interface for the Net1 subnet.
https://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/route.mspx?mfr=true

something like this for PC1

The default route (through 192.168.1.0/24) will take care of all the rest of the traffic

Same theory for linux. Or, if you have a router in the mix, you can just set up static routes on that instead.

If he is talking to the device by its Net1 IP, then windows will choose the interface already in that subnet, so no need for a static route.

smuggler.ie

roast wrote: »

Assuming it's windows, you can set static routes by the interface for the Net1 subnet.

something like this for PC1

The default route (through 192.168.1.0/24) will take care of all the rest of the traffic

Same theory for linux. Or, if you have a router in the mix, you can just set up static routes on that instead.

Thanks, knew something to do with routing tables, wasn't shore about syntax.

smuggler.ie

Cuddlesworth wrote: »

If he is talking to the device by its Net1 IP, then windows will choose the interface already in that subnet, so no need for a static route.

Could you please explain to me this: when Net2 is off transfer of the file goes smoothly over Net1, but as soon Net2 is on all traffic diverted to Net 2 and Net1 completely ignored. Routing table show metrics for all interfaces 266

Cuddlesworth

smuggler.ie wrote: »

Could you please explain to me this: when Net2 is off transfer of the file goes smoothly over Net1, but as soon Net2 is on all traffic diverted to Net 2 and Net1 completely ignored. Routing table show metrics for all interfaces 266

In theory, your machine would choose the IP that's in a subnet its connected to before routing. So if you are having issues with transferring when Net2 is enabled, its because your machine is transferring to the Net2 IP of the second machine.

Are you even routing from 192.168.2.x to 192.168.1.x?

smuggler.ie

Cuddlesworth wrote: »

In theory, your machine would choose the IP that's in a subnet its connected to before routing. So if you are having issues with transferring when Net2 is enabled, its because your machine is transferring to the Net2 IP of the second machine.

Are you even routing from 192.168.2.x to 192.168.1.x?

Sorry for delayed replay, was away.
The target I'm trying to achieve is I want local data transfer(PC1 to PC2) to happen over Net1 and any other traffic(internet, other PC and laptops(x2), smartphones, TV's) to talk on Net2.Same time PC1 and PC2 have second NIC's to be on internet over Net2.
I believe this should be possible in simple manner, but as I stated above Net2 takes priority over and Net1 stays idle. Could it be that happens as Net2 uses build-in NIC's or something else?
Thanks

smuggler.ie

So I did
experiment1 : change static IP to Net1 into 10.10.10.x/24 just in case ....still same effect Net2 takes priority over Net1 and all traffic goes trough Net2.

experiment2: Swap addressing: Net2 10.10.10.x/24(static, build_in NIC's) and Net1 192.168.1.x/24(dynamic, PCIe NIC's, DHCP, DNS, GATEWAY) .... and now i can see traffic separation.No manual changes to routing tables made.
Any comments??

Cuddlesworth

smuggler.ie wrote: »

So I did
experiment1 : change static IP to Net1 into 10.10.10.x/24 just in case ....still same effect Net2 takes priority over Net1 and all traffic goes trough Net2.

experiment2: Swap addressing: Net2 10.10.10.x/24(static, build_in NIC's) and Net1 192.168.1.x/24(dynamic, PCIe NIC's, DHCP, DNS, GATEWAY) .... and now i can see traffic separation.No manual changes to routing tables made.
Any comments??

how are you transferring data? Are you using IP, eg SMB transfer to direct IP. Or are you using something like a DNS or netbios name?

smuggler.ie

Cuddlesworth wrote: »

how are you transferring data? Are you using IP, eg SMB transfer to direct IP. Or are you using something like a DNS or netbios name?

Sorry, not that advanced with terminology, just remote desktop connection in windows, copy/paste, so TCP/IP. Believe net drive share should work too, gonna check later.
Thanks

ED E

In network connections:

Advanced - Advanced Settings - Default tab

There you can set ordering and windows will auto select the top interface for OUTBOUND connections. Its still possible for clients of its SMB shares etc though to connect on the low priority interface.

smuggler.ie

ED E wrote: »

In network connections:

Advanced - Advanced Settings - Default tab

There you can set ordering and windows will auto select the top interface for OUTBOUND connections. Its still possible for clients of its SMB shares etc though to connect on the low priority interface.

Thanks, will have look in to it.