smax wrote:
Yes, you can remove one port from switch0. There will be a slight performance penalty on that port, however.
Note that it's "slight" as in, it'll route at under 200mbit.
You would most likely do better to either
1. use VLANs (which can be routed at full gbit) OR
2. purchase an ER-X or ER-X-SFP, which can do WAN + 3LAN more cleanly (i.e. without the penalties imposed by taking a port off switch0 on an ER-5) OR
3. both 