wrong port speed in autodetect
Im upgrading a computer network: Router is an TL-R605, to which a 16 port SG1016DE is connected. Cabling remains identical.
when I connect Synology NAS to to the switch, the port (in autodetect) is set to 100MBps, instead of 1000MBps. On the old network (same cabling, other router and switch), the NAS worked fine at 1Gbps.
I did the following tests:
- change patch cable between NAS and switch: issue remains
- unplug cable from NAS and connect it to computer: computer gets 1000Mbps connection
- unplug the cable from the switch, and plug it directly in one of the ports of the TL-R605 router: NAS connection becomes 1Gbps.
- try NAS on other port of the switch: connection is 100Mbps.
- force port to 1000Mbps, instead of autodetect. 'Config speed' is reported as '1000MF', but 'actual' is shown as '100MF'. (see screenshot in attachment)
Reported speed is verified both on nas and on website of the switch.
A potentially similar issue happens with a raspberry pi, who is seen as 10MBps, where it should be 100MBps (and it was 100MBps with same cabling and old switch)
For me, the tests show that this is not a cabling issue. Anyone an idea on what is going wrong?