Troubleshooting Deco LAN speed is capped at 100m/s
Hi, I will join this discussion, as I have the same problem. One of my Deco's M4R is capped to 100Mbps for no reason. The workaround to this is to unplug LAN cable for at least 30 second, or change to the other port on the unit. Basically breaking the LAN connection for some time fix the issue temporarily.
Conditions:
Both units are in AP mode, the issue affects only the secondary unit connected via LAN cable.
No QoS, no MAC filtering, nothing.
All devices running at 1Gbps except JetDirect unit running at 100Mbps (this does not affect the network, the issue was there before use of this device)
So far I've tried:
changing all of the switches from Zyxel to TPlink
use of certified CAT6 cables only (wall infrastructure is CAT7)
reset all the settings and configure it from scratch
Network topology:
And for those who will ask why there is an extra switch connected to Huawei ISP router.
It's because after some firmware update, the Huawei unit stoped supporting Backhaul protocol.
Regards
Ares
