Checking ethernet negotiated speed

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drabisan

Senior Member
On my old 68U I had robocfg.
On newer models robocfg is no more.
ifconfig is not showing the speed.
Can anybody share a command that'll do the job? That if there's such command. Please!

Thank you
 

drabisan

Senior Member
ethctl eth0 media-type does the job
But what is the mapping? I see eth0 to 6. But that's for a router that has a WAN and 8xLAN.
eth0 seems to be WAN (guessing, by looking at traffic in ifconfig eth0), but 1-6 doesn't match 8xLAN.
 

wouterv

Very Senior Member
With the newer AsusWRT versions it is shown in the System Status - Status Tab (in below case there is nothing connected to port LAN 1, otherwise it would show like what is shown for the WAN port:
upload_2019-12-26_11-6-26.png
 

drabisan

Senior Member
I have an GT-AC5300 that shows eth0 to 8.
6-7-8 are returning errors for ethctl eth6 media-type
Error: Interface eth6 ioctl SIOCGQUERYNUMPORTS error!

RT-AX88U has eth0 to 7 and eth6&7 are returning the same error.

What I would want to understand is what is the logic and how can I map physical ports with logical ports.
I think I can reverse engineer it in some ways (unplug the cable, see the port that goes down), but the fact I don't have enough logical ports tells me there's something else to be figure out.
 

drabisan

Senior Member
With the newer AsusWRT versions it is shown in the System Status - Status Tab (in below case there is nothing connected to port LAN 1, otherwise it would show like what is shown for the WAN port:
View attachment 20458
Right and accurate for the router. Do you know any ways to get the same info for AiMesh node?
Cause actually that's the reason I asked...
 

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