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General Maximus · 07-08-2014, 10:57

no it is not. Disabling the Wi-Fi obviously only takes care of the wifi, if he leaves the shub in router mode then it is still acting as a router which is why the ports on the switch at the back are still active. Yes he can still attach another router to it but it is like making a daisy chain. The 3rd party router will handle all the routing for the devices connected to it but if they want to go outside of the side (lan) and get onto the internet, they have no direct connection, the new router is simply going to handle the traffic to the shub because it is going to see it as the default gateway and the shub is then going to route it off to the internet. He is "double nating" and forcing the traffic to go through another router unnecessarily which can only introduce more problems.

As soon as you log into shub2 in router mode there is an option on the page to put it in modem mode. Modem mode disables the routing functionality and turns the shub into a modem. This means that only port 1 is active on the back of the shub and the only way you are going to get a device connected to the internet is if it is directly connected to port 1 or if you connect a router to port 1 (i.e. attaching a router to the modem) and then connecting multiple devices to the router. In this scenario the router will be the sole device maintaining the network and it will act as the dhcp server and handle the routing etc. In your brothers case, the shub will have been handing out ip addresses for it's subnet and the 3rd party router will have been as well. The only bit of good news is that he has got away with conflicts because the two routers will more than likely have been setup for different subnets. The shub is 192.168.0.1/24 and most 3rd party routers I have seen are 192.168.1.100/24

Long story short is your bro has done it completely wrong and modem mode is there for a reason. Turning off wifi is only part of the answer and does nothing to stop wired routing, shub firewall, dhcp or any of the other stuff going on.

07-08-2014, 10:57	#2
General Maximus Ran Away Join Date: Nov 2008 Location: Lincoln Services: phone + 1gbit BB + SkyQ Posts: 11,021	Re: shub 2 modem mode no it is not. Disabling the Wi-Fi obviously only takes care of the wifi, if he leaves the shub in router mode then it is still acting as a router which is why the ports on the switch at the back are still active. Yes he can still attach another router to it but it is like making a daisy chain. The 3rd party router will handle all the routing for the devices connected to it but if they want to go outside of the side (lan) and get onto the internet, they have no direct connection, the new router is simply going to handle the traffic to the shub because it is going to see it as the default gateway and the shub is then going to route it off to the internet. He is "double nating" and forcing the traffic to go through another router unnecessarily which can only introduce more problems. As soon as you log into shub2 in router mode there is an option on the page to put it in modem mode. Modem mode disables the routing functionality and turns the shub into a modem. This means that only port 1 is active on the back of the shub and the only way you are going to get a device connected to the internet is if it is directly connected to port 1 or if you connect a router to port 1 (i.e. attaching a router to the modem) and then connecting multiple devices to the router. In this scenario the router will be the sole device maintaining the network and it will act as the dhcp server and handle the routing etc. In your brothers case, the shub will have been handing out ip addresses for it's subnet and the 3rd party router will have been as well. The only bit of good news is that he has got away with conflicts because the two routers will more than likely have been setup for different subnets. The shub is 192.168.0.1/24 and most 3rd party routers I have seen are 192.168.1.100/24 Long story short is your bro has done it completely wrong and modem mode is there for a reason. Turning off wifi is only part of the answer and does nothing to stop wired routing, shub firewall, dhcp or any of the other stuff going on.