Hi, I got quite big network 5 switch in circle topology. How it is the right way to create circle bridge with redundancy. ( If one switch die I need route path from the opposite direction ) all switches are in one big bridge all is one big network. Just point me to the right technology. Thanks.
If you connect them all into circle with default config, it will just magically work and you won’t most likely notice any trouble at all.
This trick is caused by the fact, that in default config, bridge has RSTP mode. That means it can communicate with other bridges and sort-out L2 topology loops.
So what is the problem?
Firstly, trouble could occur, if you have some switch/bridge, without RSTP mode. That may prevent loop detection.
Secondly, you should select your main switch (the one closest to your gateway/router) and change its priority to something lower than default (default is 8000 hex, so lets say for example 1000 hex will do fine). This is not necessary, but rather recommended optimization. Based on priority, bridges elect the “root bridge” and then they try to optimize their path based on distance to this root bridge. If you leave all priorities same - default, your bridges will randomly choose the root switch, which may be not ideal. Then, devices might break the loop in very unfortunate place - for example on link to the true “root bridge” - so all traffic would pass all around the loop instead of going shortest path.
Hi, thanks. I will have to tune priorities. It all works with basic RSTP but on dude, I notice some pings timeouts on one switch in the network. It looks like this switch changing root bridge randomly.