simple queues question

I’m considering using mikrotik as an advanced bandwidth controller and a router. Currently I have 3 internet providers in my network and I would like to use everyone of them for different services. I mark packets depending on a specific service and than route them to suitable interface.
The problem is that I also need to mark packets coming from users to be able to use quee tree for everyone. The problem is that it doesn’t make sens to mark twice.That’s why I decided to use simple queues.

However I have no idea why there are “limit at” and “max at” options in simple queues. I understand the idea of CIR,MIR and I know how it works in queue trees which works similarly to HTB. The question is: how does it work with simple queues ? Is simple queue able to borrow bandwidht from another ?
Please help . Thank you.
:cry:

Yes, simple queues can borrow data rate from peers. There is no difference between simple queues and tree queues except two points:

  1. tree queues are classified by firewall marks, but simple queues - by addresses
  2. simple queues are only attached to the root queue of global-in and global-out interfaces (well, there also should be a thirg, global-total, interface somewhere, but it is not accessible by any other means)

I still don’t understand. In queue trees there is always parent queue that has
rate limit. If there are child queues, they share parent bandwith between each other. In simple quues global out and in bandwith is not specified thus it doesn’t make sense to share bandwith. Propably I misunderstood something. Thank you for your help. I will propagate mikrotik spirit around the world :slight_smile:

Yes, you can not specify an upper limit for a group of simple queues - just for each one…

I while ago I read a document that was vey good explaining the queue tree system (I had probs on understanding it).

If I find it and someone is interested I will post it somehow, it can be useful for a lot of people

Would be great.. I barely undesrtand the concept of queus.. thanks