No gigabit LAN on 4th gen Airport Extreme

[mentaluproar]

I have connected a Dlink gigabit switch to my airport and found that while anything supporting gigabit is detected at full speed, my airport is not. It is only detected as a fast ethernet device. I have tried other cat5e cables and a factory reset but it doesn't work.

Why doesn't my airport extreme function as a gigabit device?

 

[Altemose]

I have connected a Dlink gigabit switch to my airport and found that while anything supporting gigabit is detected at full speed, my airport is not. It is only detected as a fast ethernet device. I have tried other cat5e cables and a factory reset but it doesn't work.



Why doesn't my airport extreme function as a gigabit device?

How did you come to the conclusion? Have you tried switching ports on the switch?

 

[goMac]

Are you sure it's a 4th gen? An earlier generation of the 802.11n Airport Extreme (the flat one) did only have 100 megabit ethernet.

 

[mentaluproar]

Airport utility tells me it is a 4th gen. The indicator lights on the switch tell me what speed it is connecting at. My NAS connected to both at gigabit speeds according to the webUI.

 

[Altemose]

Airport utility tells me it is a 4th gen. The indicator lights on the switch tell me what speed it is connecting at. My NAS connected to both at gigabit speeds according to the webUI.

Have you tried swapping ports?

 

[mentaluproar]

Yep yep

 

[Altemose]

Yep yep

Interesting. How is the network set up? Is it AirPort --> Switch or Switch --> AirPort? What does AirPort Utility say the speed is?

 

[mentaluproar]

It is set up airport to switch. I can only find wireless client speeds in airport utility.

 

[Altemose]

It is set up airport to switch. I can only find wireless client speeds in airport utility.

Well. I think it is there in the mobile AirPort Utility. I am away from an AirPort network so I can't tell you where in the app it is.

 

[h9826790]

There is no way to tell if your AE only running the gigabit LAN at 100Mb/s in Airport Utility. However, you may connect your computer to the AE directly and read the speed from your computer. If that shows you the connection is 1000 base, that means your AE is fine.

 

[mentaluproar]

Then why would the switch indicate 10/100?

 

[Altemose]

Then why would the switch indicate 10/100?

I am guessing it could be a "false positive". What would happen if you plug the AirPort into a different switch?

 

[mentaluproar]

No gigabit LAN on 4th gen Airport Extreme

I only have the two dlink switches. Both give the same result

 

[Altemose]

I only have the two dlink switches. Both give the same result

What happens if you plug a client directly into the AirPort?

 

[mentaluproar]

Connected via Apple thunderbolt ethernet adaptor, I'm getting 100 Mbit/s.

Stranger and stranger.

 

[Altemose]

Connected via Apple thunderbolt ethernet adaptor, I'm getting 100 Mbit/s.

Stranger and stranger.

Can you try a replacement at an Apple Store?

 

[mentaluproar]

I've owned this thing for so long I doubt they would just give me a replacement.

 

[Altemose]

I've owned this thing for so long I doubt they would just give me a replacement.

Do you have AppleCare on your Mac, iPhone, iPad, or Apple TV?

 

[mentaluproar]

My phone and iPad, yes.

 

[Altemose]

My phone and iPad, yes.

AirPort is covered under iPad agreement.

 

[mentaluproar]

Aaaaand today, after cleaning up the wiring a bit (nothing connected to the airport) gigabit works. I suppose I have a bad port or a short somewhere. I'll just wait for it to die. The only reason I even use it is because I dont want to use the gateway Time Warner gave me as the backbone of my network. I dislike letting an ISP into my network.

 

[AppleDApp]

Aaaaand today, after cleaning up the wiring a bit (nothing connected to the airport) gigabit works. I suppose I have a bad port or a short somewhere. I'll just wait for it to die. The only reason I even use it is because I dont want to use the gateway Time Warner gave me as the backbone of my network. I dislike letting an ISP into my network.

So how are things setup?

 

[sgjohnston]

Aaaaand today, after cleaning up the wiring a bit (nothing connected to the airport) gigabit works. I suppose I have a bad port or a short somewhere. I'll just wait for it to die. The only reason I even use it is because I dont want to use the gateway Time Warner gave me as the backbone of my network. I dislike letting an ISP into my network.

Gigabit ethernet uses two extra pairs in the cable, so if one wire in an extra pair is broken (intermittently?), or the connection is poor, the link will negotiate at 100mb/s. I once spend a few hours on that problem, only to discover that the cable only had two pairs in it, rather than 4 - it came with a broadband modem and was only intended for 100mb/s.

 

[mentaluproar]

I thought that too, but that cable negotiated to gigabit with other devices.

 

[Altemose]

I thought that too, but that cable negotiated to gigabit with other devices.

How many cables did you try? I had this problem between a TP-Link switch and a 5th gen. Extreme and it turned out to be that the cable some how went bad and was touchy though the crimps were good.