I guess what I mean is 'reachability' without it being dynamic and subject to the router's autoconfiguration decisions.
I have several subnets containing various kinds of devices. Only one is connected to the default bridge, because of issues I've previously had with unwanted broadcast traffic. My goal is to have the separate subnets so I can implement Qos for the phones and also have a subnet for sensors and perhaps some CCTV video traffic. Which wont be connected to the Internet because it wont need to be.
Perhaps I should have run more cables, so I didn't need to use switches like hubs in the rooms. Thats what I am doing and for the most part it works well. But sometimes it doesn't and I still am figuring out why.
Each of the three non-WAN Ethernet ports on my Mikrotik is connected to at least one unmanaged switch. When there is a "server on that segment, for example, one is in the upstairs, and the traffic actually has to traverse two switches to get there, thats fine, its always pingable and reachable in around a microsecond, for a wired ping, everything is hunky dory, the route is kept open.
However, its not so for some of the other devices that are less active, or if a switch is on but has nothing plugged into it.
When I do use it, say by plugging in my laptop, setting its "location" to the appropriate subnet, it doesn't work. I still have not configured it properly, so its always 'reachable'.
When there is something like a IP phone or a NTP/DNS server plugged into a leg then the connection tends to stay open. But when there is not it seems I have problems with connectivity after a while.
Don't get me wrong. I am still quite happy with my purchase. The issues that I have are minor ones which I suspect I would likely run into with most or all newer equipment, especially when getting it set up at the beginning. And I'm learning a lot of things I wouldn't have been able to learn with other similar purchases in the ultra-low price range I chose.
I definitely am planning to step up to a gigabit-ethernet capable unit, probably fairly soon. Ideally I will just be able to port my config to it, directly.