Skimming through this thread, it sounds like there's some confusion around the roles played by a default gateway and a router.
In the diagram below, the switch has three L3 VLANs configured with IP forwarding. It also has a default gateway defined. The default gateway is used for all unknown routes, such as those that would lead to the internet. The PC and Printer are in their own separate VLANs, with each device's default gateway configured to point to the switch/router IP. If other PCs in the same subnet (192.168.1.0/24) want to talk to each other, they don't need a default gateway. But if they need to print or get out to the internet, it must be configured.
The default gateway on the switch only needs to be for an "external" network - one where another device knows the routes for other things. In this case, it's going to be the internet gateway. The switch knows the routing information for all directly connected interfaces (the PC and Printer networks) and we don't need to configure default routes on the switch for those - that's not an option, nor is it necessary.
The routing happens in the switch (in this case, because of IP forwarding) for all directly connected routes. Those are listed in
In this case, if you want "remote access" from within the PC subnet (192.168.1.0/24), you wouldn't need any default route configured on the router. But, if you are on a different subnet - one not local to the router - you would have to configure the default gateway to point to an interface on a different router that knows how to get back to you.
I hope this is helpful!
-Drew
In the diagram below, the switch has three L3 VLANs configured with IP forwarding. It also has a default gateway defined. The default gateway is used for all unknown routes, such as those that would lead to the internet. The PC and Printer are in their own separate VLANs, with each device's default gateway configured to point to the switch/router IP. If other PCs in the same subnet (192.168.1.0/24) want to talk to each other, they don't need a default gateway. But if they need to print or get out to the internet, it must be configured.
The default gateway on the switch only needs to be for an "external" network - one where another device knows the routes for other things. In this case, it's going to be the internet gateway. The switch knows the routing information for all directly connected interfaces (the PC and Printer networks) and we don't need to configure default routes on the switch for those - that's not an option, nor is it necessary.
The routing happens in the switch (in this case, because of IP forwarding) for all directly connected routes. Those are listed in
code:
.show iproute
In this case, if you want "remote access" from within the PC subnet (192.168.1.0/24), you wouldn't need any default route configured on the router. But, if you are on a different subnet - one not local to the router - you would have to configure the default gateway to point to an interface on a different router that knows how to get back to you.
I hope this is helpful!
-Drew
