Internet connection dropping out when using static IP for external interface
I recently received a static IP address from my ISP and was hoping to configure the external interface to use this. Currently, it is set to use DHCP as from the Dashboard I can see that the IP address is aaa.bbb.ccc.66, the gateway is aaa.bbb.ccc.254 and the netmask is 255.255.248.0. These values were also confirmed by one of the support agents from my ISP.
When I tried to switch the external interface to static IP and enter those same details (with the netmask as /21), after about 90 minutes the internet connection dropped. As soon as I switched the interface back to DHCP mode, it started working again. I'm not quite sure what is causing it since the DHCP configuration seems to be exactly the same as the static IP configuration provided by my ISP.
Any advice is greatly appreciated.
Comments
Contact your ISP. I think that it is their issue, not the firewall
Already started that conversation but it can be like talking to a brick wall sometimes. I thought I'd make a quick post here to see if I was missing something obvious before I continued wrestling with the ISP. I was transferred to the "technical team" 6 times just today...
You can look at Traffic Monitor when the connection drops and see if there is any hint there.
am having the same issue but instead of 90 mints my connection drop instantly after i switch to static
also i try pinging the static Ip and i have no response but few months ago my boss told that it always had static Ip so someone most of change the settings and now i don't have connection with the vpn tunnel that communicates with another office in the same domain or network
Contact your ISP to verify your connection type & IP addr
Definitely this.
Depending on how the network is structured on their side, some will still require DHCP to be enabled to establish the session even though it hands out the same IP address (that is the case with some NBN and NBNEE services in Australia for example).