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Dual NIC Issue/Help
From: Ken (SHIELDSIT)
22 Nov 2016 13:57
To: ALL
1 of 4
41840.1
So lets say I have a PC with at least 2 Ethernet ports. One is assigned an IP from DHCP, and one is set manually. They are different subnets, so for example:
NIC 1:
IP: 10.36.8.
Subnet: 255.255.254.0
Gateway: 10.36.8.1
etc...
NIC 2:
IP: 192.168.0.1
Subnet: 255.255.255.0
The problem I have is this. When both adapters are enabled the internet doesn't work. It appears the computer is trying to use NIC 2, if I set a gateway address for NIC 2 would that fix this issue? I see this on multiple PC's and it's pissing me off!
From: koswix
22 Nov 2016 22:59
To: Ken (SHIELDSIT)
2 of 4
41840.2
In reply to
41840.1
What OS?
Linux:
https://www.thomas-krenn.com/en/wiki/Two_Default_Gateways_on_One_System
Windows:
:'D
EDITED: 22 Nov 2016 23:00 by KOSWIX
From: Serg (NUKKLEAR)
23 Nov 2016 08:14
To: Ken (SHIELDSIT)
3 of 4
41840.3
In reply to
41840.1
Presumably only one of the NICs is connected to a network which has Internet access?
The GUI way is to go into TCP/IPv4 Properties, Advanced, and set a default gateway with a metric lower than any other default gateways (Windows will prefer the default gateway with the lowest metric). If you're still a bit stuck, do a "route print" and show us/me - via Hangouts if you want it less public.
If your machine is configured to use a DNS server on one of the local LANs, you'll need to make sure it's reachable.
From: Monsoir (PILOTDAN)
25 Nov 2016 10:45
To: Serg (NUKKLEAR)
4 of 4
41840.4
In reply to
41840.3
I'd say get rid of the DFGW completely on the second NIC. Even with metrics, it doesn't really make much sense to have two gateways defined IMHO - should just add static routes if required.