When Simple queues turns yellow...? And why I have so many droped frames

RouterOS General
1

Hi

Got such configuration

0 name=“5Ghz” target=172.26.0.0/24 parent=main1 packet-marks=“” priority=8/8 queue=default/Down_5Ghz limit-at=0/0 max-limit=0/12M burst-limit=0/0 burst-threshold=0/0
burst-time=0s/0s total-queue=test1

1 name=“DWN Download Lan” target=172.27.0.0/24 parent=main1 packet-marks=“” priority=8/8 queue=Upload/Download_Lan limit-at=0/0 max-limit=2M/10M
burst-limit=0/0 burst-threshold=0/0 burst-time=0s/0s total-queue=test1

2 name=“24ghz” target=172.25.0.0/24 parent=main1 packet-marks=“” priority=8/8 queue=Upload/Download_24 limit-at=0/0 max-limit=0/5M burst-limit=0/0 burst-threshold=0/0
burst-time=0s/0s

3 name=“main1” parent=none packet-marks=“” priority=8/8 queue=default-small/default-small limit-at=0/0 max-limit=0/0 burst-limit=0/0 burst-threshold=0/0
burst-time=0s/0s

Now here is the question - why in winbox I see queue turning yellow ?
And second thing - If I’ll go to statistic I see that I have high level of dropped frames
First idea was to look into Total Queue Type - I had there pfifo with size 50 - I’ve increased that to 500 - still number of dropped frames stayed the same - and I have avg packet rate lower than 50 - what is the reason ?

2

My opinion : yellow borrowing capacity from parent, red dropping. Probably during some recent period.

Dropping is correct as it it the only way how the traffic can be shaped.

3

Now here is the question - why in winbox I see queue turning yellow ?

Green = almost free(not much bandwidth)
Yellow = around half bandwidth reached
Red = Almost fully or fully used bandwidth.

And second thing - If I’ll go to statistic I see that I have high level of dropped frames

Can you give example? What you call high?

First idea was to look into Total Queue Type - I had there pfifo with size 50 - I’ve increased that to 500 - still number of dropped frames stayed the same - and I have avg packet rate lower than 50 - what is the reason ?

Did you reset counters? Dropped counter is not dropped/sec. It is dropped from start, so every dropped packet will increases counter and it never decreases until you reset manually it or reboot router.
Don’t put big queues, they aren’t good practice in most cases.