10BASE-T slowing down all network ?

RouterOS General
1

Hi,

I was experiencing seemingly random slowing on my network, where a new CRS125-24G-1S-2HnD with 6.7 is the core router. 100Mbit internet connection, but at some points I could use only 2-4Mbit, although there was almost no traffic on the router. ISP said not their fault. Tonight I have found the issue. One of the clients’ motherboard when turned off connects as 10BASE-T, I guess for WOL purpose - as soon as I turned off that port, the speed rocketed to normal, 100Mbit net speed and all. Tested 3 more times, the issue is confirmed.

Why is this? I’m quite sure this router is not a hub to limit the speed to the slowest link.

2

You aren’t alone, it’s the 6.7 firmware- http://forum.mikrotik.com/t/6-6-to-6-7-crs-very-slow-lan-speed/72330/1 From that thread, there apparently is an early 6.8RC available that is fixing the issue after defaulting and rebuilding the settings.

I have a CRS125 in an office and am holding at 6.6 until things smooth out.

3

Thank you, that’s really reassuring fix is on the way :slight_smile:

4

Confirmed that 6.8rc1 with config reset fixes the issue.