Multi Nic Network Setup Issues

[swamiforlife]

Hello,

 

I have 3 Nics on my Unraid Server.

Nic1 = 192.168.25.0/24

Nic2 = 192.168.26.0/24

Nic3=192.168.27.0/24

 

Each Nic has a static IP and all 3 networks are separate from each other. 

Internet connection is on Nic2. 

I am able to open the WebGui from other pcs on each network. So i am able to copy and add data from all the 3 nic networks.

The problem is i am not able to access the internet from Unraid Server, so i can't do OS updates and can't install plugins, etc.

 

So, how do i make the unraid server access the Internet from Nic2?

 

I am running Unraid 6.5.1

Edited December 27, 2018 by swamiforlife

[bonienl]

The management interface of the server is fixed to eth0. This interface needs internet access.

[swamiforlife]

Ok

 

So i made the sure that eth0 has a internet connection. I gave it a static ip of 192.168.26.15

And in the gateway section i add the ip of my router which is 192.168.26.1

When i open a terminal window and do a ping on the Gateway ip i get destination host unreachable. 

But i am able to ping the ip of eth0 from other computers on my network so connectivity seems to be ok. But for some reason Unraid is not able to ping the router, so it cant get to the internet. 

[bonienl]

In your previous post you have network 192.168.26.x assigned to NIC2. Maybe you mixed up interfaces?

[swamiforlife]

I changed the cabling going into the Nics so that the nic associated with eth0 had the 192.168.26.x cable going into it

[bonienl]

Did you change the network of your NIC2, i.e. no duplicate network assignments.

[swamiforlife]

Basically in the WebGui of Unraid in the network settings page i dont have any duplicate network assignments. 

Each Eth interface has its own static ip. 

I doubled to check the cabling just incase i didnt have some cables attached to the same switch and checked for looping. 

 

[bonienl]

What is the result of these two commands (run on your server)

arp -n 192.168.26.1

traceroute -n 192.168.26.1

 

[swamiforlife]

Thanks Bonienl for all your help,

 

I restarted the server and was able to ping the Gateway. After getting to that point, internet was still not working and i checked my firewall rules in the router and there was a error on my side so i fixed that and now internet is working fine. 

So basically the first point you told me about having internet on eth0 was the main thing. 

So thanks again for all your help.