They are a quad port nic.. right?

Still separate interfaces like em0, em1, etc… for the OS.
A quad-port NIC is NOT a switch. Those are 4 dedicated NICs on a single plug-in card.

This is what you are doing wrong:

I am having one LAN and one WAN interface with two gateways.

Really?

@andyroo54:

…our second WAN has got an IP from the ISP ...

It's the typical scenario: "I have the exact same problem! Well, totally different setup, but EXACTLY the same problem. Promised!"

Andyroo54, please start a new thread and post screenshots of your interfaces and gateway configs in there.

If it's so obvious to you what I'm doing wrong can you please just tell me? Give me a hint or something?  :'(

This is what you are doing wrong:

I am having one LAN and one WAN interface with two gateways.

::) ::) ::)

Now, go read the docs a couple more times and please tell us where do they suggest to create a single WAN with two GWs.

::) ::) ::)

@andyroo54:

Are you saying we have to install a second NIC to this appliance

Absolutely not what I'm saying.
You already have four (4) NICs in your appliance.

But it's not like each of those 4 Ethernet ports are seperate network interface cards..? They are a quad port nic.. right?

@andyroo54:

Are you saying we have to install a second NIC to this appliance in order to use two WAN's?

Sigh… Again, start here: https://doc.pfsense.org/index.php/Multi-WAN

Sorry I've read that page it doesn't help. We have it all configured correctly as far as we can tell. I'm not an expert but the guy I work sure is but he is stumped too. It just doesn't make sense. The gateway is set to dynamic because the ISP gives out an IP, it's a UNDI port on a NBN (National broadband network) NTD. You can patch anything in there an if you are set to DHCP you will get on the internet.

If it's so obvious to you what I'm doing wrong can you please just tell me? Give me a hint or something?  :'(

I just noticed this, we are monitoring google DNS to say if the gateway is up or down, but in here it says the ISP is also using google DNS, could this be causing an issue? It's weird because the gateway appears to be up but we can't ping or traceroute etc…

http://imgur.com/jw6FiqA

Are you saying we have to install a second NIC to this appliance

Absolutely not what I'm saying.
You already have four (4) NICs in your appliance.

Are you saying we have to install a second NIC to this appliance in order to use two WAN's?

Sigh… Again, start here: https://doc.pfsense.org/index.php/Multi-WAN

@cmb:

two WANs on a single NIC

You could of course use two VLAN interfaces on the same physical NIC, but that implies a managed switch et al.

We have a pfsense appliance and seem to be having the same issue, our second WAN has got an IP from the ISP but it won't show as online, can't ping google DNS. We know the internet for that wan is working if we patch a dhcp laptop into it, the internet works.

We are using the C2758, we have one wan plugged into the top left port, and the second wan plugged into the bottom left port. Are you saying we have to install a second NIC to this appliance in order to use two WAN's? Because we have two wans working on another gateway but it's the SG-2440 appliance. Why is it different?

two WANs on a single NIC

You could of course use two VLAN interfaces on the same physical NIC, but that implies a managed switch et al.

One of my gateway was not working and was not able to ping to internet.

But my second gateway was onilne and I am not able to understand why the second gateway was showing  offline.

Is it possible to configure pfsense in such a way that it the default gateway is down, the second one which is working would become default automatically.

SSR

Make two WANs, not one!

That's where I wanted to guide him gently.
I'm unsure a "WTF" statement helps here.  ::)

Please note that I had configurations for two different providers and this occurred when I was switching over. However I think that's where your problem is.

P.S. just to be clear I was changing the config between providers when I had this problem. Not only the gateway. (Just in case someone thought I was only changing the gateway and not the corresponding IP configurations).

It has nothing to do with monitoring. As i said, i also tried from pfsense ssh shell to ping to websites/url ips but it could not.

Which targets do you monitor to determine if an IF is down?

I have attached screenshot here.

Two WAN gateways are 192.168.5.10 (Default) and 192.168.5.11

When i change the the default gateway to 192.168.5.11, both gateways stop working indicating 100%  packet loss.

From pfsense ssh shell, I pinged to some url and ip address  but ping fails.
PING to local network is fine.

As soon as I again changed the gateway to 192.168.5.10, everything works fine.

Sher

For instance, are both gateways on the same network address range? When both gateways become 'offline', do you mean they both stop pinging or that they just become unavailable to the pfSense box? How have you set up your network specifically (diagrams, please)? Are you checking to see if the gateways are available only from the LAN side of your firewall, or are you checking on a separate box on the WAN side?

I would suggest you start with a diagram of your network layout - include network addresses with a reasonable amount of info on the WAN addresses without giving the whole address away, such as subnet masks, first few numbers, etc.