Nebula Switch - RSTP or Loop Guard ?

GiuseppeR Posts: 135  Ally Member
Community MVP First Anniversary 10 Comments Friend Collector

Hello everyone,

I see that on Nebula is impossible to have RSTP and Loop Guard active at the same time, if you try to have both you get this error:

"You cannot enable loop guard and spanning tree on a port at the same time"

I tried to have both active because I saw this link:

Here you read that "Loop guard is a feature that provides an additional layer of protection" while in reality it has to be an alternative to RSTP becuase you cannot have both at the same time.

I know that RSTP prevents network loops by blocking redundant ports, but I'm looking for some real scenarios.

What would you choose and why?

I'm curious about your environments.

All Replies

  • Zyxel_Kay
    Zyxel_Kay Posts: 637  Zyxel Employee
    First Anniversary 10 Comments Friend Collector First Answer

    Hi @GiuseppeR

    Yes, the Loop Guard and RSTP cannot be enabled simultaneously on a switch port.

    As mentioned in the FAQ article, RSTP is used to prevent broadcast storms created by ring topologies. Loop Guard, on the other hand, is particularly useful for ports connecting to end devices or hubs. For example, if your switch connection is in a ring topology, you should apply RSTP on those ports. For ports connecting to end devices or hubs, you can set up Loop Guard to prevent loops.

    Let me know if you have any other questions.


    Share yours now!


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