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Can a pc have two gateways

Last response: in Networking
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December 15, 2011 12:50:02 PM

Hello,
wanted to know if a pc in a lan network can have two default gateways

More about : gateways

December 15, 2011 8:28:31 PM

An single LAN segment can only have one default gateway.
A PC can be connected to more than one LAN segment.
A single physical LAN segment can have more than one logical, or virtual, LAN segments operating on it.
a b X LAN
December 17, 2011 10:09:29 PM

Absolutely not. Think about it from a purely logical perspective. It's an oxymoron. How can you have multiple defaults? The whole point of a default is to eliminate ambiguity. It's not a default if it still requires a decision be made.

Given multiple default gateways, Windows will only ever use one and ignore any others (usually based on which has the higher priority connection).



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December 19, 2011 3:26:16 PM

I agree with PhilFrisbie. At work, I have two NIC's on two different lan segments. Each card has it's own IP address on different subnets and of course, each needs it's own (default) gateway.

Not many home networks are complicated enough to need multiple subnets/networks.
a b X LAN
December 19, 2011 3:59:37 PM

If the question is limited to whether a PC can *literally* have multiple default gateways, the answer is yes, in the sense you can have multiple network connections, each w/ its own default gateway. But that misses the point. What matters most (or at least should) is what is the *effect*? As I said before, from the perspective of any PC connected to multiple networks, only ONE of those default gateways is used, the others are IGNORED.

So given that, what’s the right answer? Can a PC have multiple default gateways? I guess it just comes down to how you interrupt the OP’s question. Yes, as in you can configure multiple default gateways, but as a practical matter, no. You can’t have MULTIPLE defaults, it makes no sense from the PC’s perspective.

!