I've already tried to find the answer to my question [how to prioritise management traffic] throughout this forum with no luck.
What I have is a network of Mikrotiks, UBNTs, Cambiums, Netonixes, etc... mostly bridged. Customers connecting using PPPoE (with simple queues getting created on ppp connection established - using bandwidth limitations from radius server). It's (almost) impossible to use VLANs (and try to prioritise that way) so I'm trying to find out a way to do management traffic prioritisation over other traffic (including customers' traffic). This is to ensure availability of the network devices (ping, snmp, ...) in high loads.
Since there's no way of knowing exact bandwidth throughout the network (lot of WiFi links) I can't use QOS with configured limit-at or max or whichever parameters need speed settings - therefore most of the examples and studies (which involve "my ISP gives me xxMbps") are not useful :( ..
What I know and can use is the IP schema - all o the equipment use private IP blocks unique on the network.