WAN interface goes down every few days.

Question

Hey all, 
 
 My WAN interface keeps going down every two or so days. It started earlier this week and I can't find a reason why it happens. Once I reboot the router, it comes back up. 
 I've had the exact same issue a while back when I was using XG under ESXI, so I upgraded, about two months ago, to a Qotom Q355G4 4GB RAM / 128GB SSD running XG on bare-metal. 
 
 Any ideas how I can troubleshoot this issue? The WAN interface stops working at around 2-3AM. At least that is when the logs stop recording anything new.

sachingurung · Answer

Hi Paul, 
 Place an unmanageable switch between the internet modem/Router and the XG and monitor the behaviour. Alongside, please show us the configuration for the failover rule, go to, Interface | WAN link Manager | IPv4 Gateway | Failover rules. 
 Take SSH access to the firewall and go to the Advance Console, execute the following command and show us the output. 
 ethtool -i Port# (here, # is the port number on which WAN is configured) 
 Show us the output. 
 Thanks

rfcat_vk · Answer

Hi, 
 correct. I used to find the same thing, the ISP gateway would show fail but still pass traffic. I changed to a non ISP address. If you don't really want to know about link failures you can choose an internal address. 
 Ian

Durga Prasad · Answer

Hi All, 
 
 You're correct. I used to find the same thing, the ISP gateway would show fail but still pass traffic. I changed to a current ISP IP to another Non ISP address and again reassign the Current ISP address automatically Wan interface is up. 
 This is not an ISP issue we already setup a gigabit 8 port switch in middle ISP router and firewall still I am facing the same issue, this is not only one port 1, all wan ports same issue. 
 we tested in other firewalls, we not facing any issues like wan link down.

Thanks, 
 Prasad