WAN traffic exceeds queue limits

RouterOS General
1

Hello

I have 80Mb UP/DW dedicated bandwidth and I’m using simple queue to limit the bandwidth before my ISP does in an attempt to avoid bufferbloat.


/queue simple
add comment="Internet Traffic" max-limit=75M/75M name="Limit Bandwidth" target=\
    10.20.0.0/24

The problem is, I can still see WAN traffic is exceeding the queue limit! it even exceeds the 80Mb sometimes, which results in ping spikes.

Here’s what I tried so far:
-I tested with every queue type but issue persists.
-I targeted WAN interface instead of the local subnet but nothing changed.

Any idea what might be causing the problem?

2

Apparently, other people are having the same problem and Mikrotik is not doing anything about it!

http://forum.mikrotik.com/t/simple-queue-going-over-max-limit/158443/1

http://forum.mikrotik.com/t/download-traffic-exceeding-queue-limits/157761/6

3

Apparently, you and other people do not read #7 on same topic link you post.
http://forum.mikrotik.com/t/download-traffic-exceeding-queue-limits/157761/6

It doesn’t work the way you think, so you don’t get the results you think it should be,
and if no one but @chechito has intervened, it’s because not everyone wants to get into explaining the A-B-C of how things work.

4

1st of all, With all due respect to Chechito, what anyone says doesn't always mean it's a fact for OPs with not enough experience with QoS.

2nd of all, What's the point of limiting the bandwidth if the clients are going to exceed the parent's max-limit anyway?!

Also, I don't think anyone is forced to explain anything, especially with a condescending tone.