MikroTik

Hi all

i have 2 LHG G-5acD-XL connected through nstreme.
each LHG is connected to a 1Gbps switch using cat 6 cable.
Cable are tested and OK

But on both sides, the ethernet is running at 100Mbs full duplex rate
system are up to date. (6.45.6 package version & firmware)

on site A, i see that the LHG advertise 1Gbps but "link partner" is advertising 100Mbps On site B i see that the LHG advertise only 100Mbs, and does not advertise 1Gbps
changing Switch does not work
setting auto neg to off and forcing 1Gpbs does not work (thanks "safe mode")
do you have an idea ?

I have seen such things happen in radio transmission towers where there are strong transmitter signals at FM and DAB frequencies.

You mean interferences going to the cable ?
in my case both site are domestic area, without strong interferences

on site B, the LHG don't advertise 1Gbps, that's strange.
Cable on both site are not from the same manufacturer, so i excluded a problem on both cable at the same time
Cable on site A is 30 meter long
cable on site B is 40 meter long

Stupid question: is interface on Site B configured to advertise 1000M at all (have needed options ticked)?

on site B, the LHG don't advertise 1Gbps, that's strange.

Remember only the AC type LHG can do 1G, the N type is 100 Mbit.
You also have to use the power inserters that come with it, not some leftover type from another device.

Stupid question: is interface on Site B configured to advertise 1000M at all (have needed options ticked)?

Yes it is

on site B, the LHG don't advertise 1Gbps, that's strange.

Remember only the AC type LHG can do 1G, the N type is 100 Mbit.
You also have to use the power inserters that come with it, not some leftover type from another device.

it is the AC version
I use the POE injector shipped with it.

On site B, if i uncheck then re-check the 1Gbs checkbox, i see in the status that the LHG advertise 1Gpbs. 5 secondes later, it's gone, and i only see 10/100 half/full
Edit: resetting device does not help

Tried to downgrad without success.. last this to do is to check both cables...
1 is cat 5e, the other is cat6
if it's the cable, it's really bad luck having 2 new faultly cable

You use gigabit POE injectors? Its the white ones with the green led...

You use gigabit POE injectors? Its the white ones with the green led...

That's an excellent question...

Just checked... the poe injector has only 4 wires !!
no green led.

this one was shipped with the antennas... does it mean that mikrotik sell gigabit capable antennas with 100Mbps injector ? that's stupid ! i

thank you for finding this...
i'll buy 2 gigabit poe injector.

ok found why i had 100mbps injector

we bought LHG 2Ghz before, and we replaced it with 5Ghz AC antennas, without replacing the injector...
i found the good gigabit poe injector and installed it on site 1 : now it's giga

i must install it to site B
thanks for finding it Zacharias

i must install it to site B
thanks for finding it Zacharias

You are welcome...

ok found why i had 100mbps injector

we bought LHG 2Ghz before, and we replaced it with 5Ghz AC antennas, without replacing the injector...
i found the good gigabit poe injector and installed it on site 1 : now it's giga

i must install it to site B
thanks for finding it Zacharias

Wait, I told you that before, in posting #5. But then you said "I use the POE injector shipped with it."...

ok found why i had 100mbps injector

we bought LHG 2Ghz before, and we replaced it with 5Ghz AC antennas, without replacing the injector...
i found the good gigabit poe injector and installed it on site 1 : now it's giga

i must install it to site B
thanks for finding it Zacharias

Wait, I told you that before, in posting #5. But then you said "I use the POE injector shipped with it."...

Yes you're right.
thank you also
as i said i thought the injector were the one provided with the antennas
but you were right.