Question

Apple MacBook Sierra Wireless WIFI 5GHZ



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Userlevel 1
What authentication type are you using? 802.1x? wpa2? what are your radio power levels?
I have 802.1x for computers and wpa2 for iPads, the radio power in the 5Ghz is at maximum.

At this moment a diference that I notice is the TxBF. I will look into the trafic capture I have done digging to see the TxBF negociation.
Userlevel 1
Ok. So two things that come to mind:
  1. On your 802.1x Privacy settings tab under WLAN Services, what Key Management Options do you have it set at. Just so you know, and I don't know why, but the Apple Macbook computers do not support Opportunistic Key Caching (OKC), but their iPads/iPhones do. Our Key Mangement Options are set to "Pre-Authentication"[img]https://d1uyvls174j03l.cloudfront.net/extremenetworks-us/attachment/RackMultipart20171005-112853-o3m354-Screenshot_at_Oct_05_12-48-20_inline.png[/img]
  2. As mentioned before you will need to measure the signal from where this Mac is and look to see what the neighboring AP signal level is at. Because you have it set your radio levels to maximum power, you could be seeing interference from nearby APs. How far off is the next AP where this iMac sits?
Hope this helps.
Userlevel 2
I haven't seen any mention of mac os' other built-in wi-fi tools: http://www.letstalk-tech.com/access-wifi-scanner-macos-sierra/ I use these a lot and the scanner has more info than the command-line scanner and it's easily sortable. The Performance tool shows SNR with no need to install anything. Also, the iphone/iPad AirPort Utility scanner won't show wi-fi by default. It must be turned on under preferences.

I'm also curious how close the other APs are. Macs excel at picking out a crummy signal so with the 5 ghz power at max(assuming the others are too) there's a good chance it's picking a loud but poor far-off signal. We use 10 dbm on 5 ghz if it's meant for one medium-size room. I'm still experimenting with 16-14 dbm in the dorms so 5 ghz will easily service a neighbor. This is very general with a lot of exceptions.
Peter, can you check the protocol assign to MAC ?

IN my case I have disable LDPC and don't have the option TxBF but the client reports does as the used protocol .

Userlevel 1
Peter, can you check the protocol assign to MAC ?

IN my case I have disable LDPC and don't have the option TxBF but the client reports does as the used protocol .

We have it enabled.

Userlevel 1
Hi Valter,

I'm curious how this case is going? Are you still having problems?

Peter
Hi Valter,

I'm curious how this case is going? Are you still having problems?

Peter
Upgrade to version 10.31.6

The Client Representation TxBF is resolved in the AP39XX but not in the 38XX.

After one day with test users in the 5Ghz with no fails, I have open the 5Ghz to the rest yesterday afternoon.

Today it will be the big 5.0AC test.

Note: The ping replays are still +- 200ms from server to Client Mac in 5.0AC
Hi Valter,

I'm curious how this case is going? Are you still having problems?

Peter

Userlevel 2
I am very curious to know the solution, i have exactly the same problem after high sierra update on MBP, i mac running fine though, so please updatr.
I am very curious to know the solution, i have exactly the same problem after high sierra update on MBP, i mac running fine though, so please updatr. What is your firmware version ?
Hello,

After the last firmware upgrade (Krack) the system is stable.

The pings are not great, but are constant.

The previous were "Jumping" from 1ms to 1000ms

Userlevel 2
When you say the last firmware upgrade, means which version?
When you say the last firmware upgrade, means which version? Software: 10.31.07.0002
Userlevel 2
When you say the last firmware upgrade, means which version? this is the version i have , and AP 3805 , still all MBP connects to 802.1x SSIDs shows connected but grayed out , it gets an IP for a second and then loses it right away, very strange.

all other MBP prior to High Sierra are working fine.


When you say the last firmware upgrade, means which version? Management Frame Protection (MFP) is Disable ?
Userlevel 2
When you say the last firmware upgrade, means which version? Yes it is Disabled
Userlevel 2
When you say the last firmware upgrade, means which version? am i alone in this?
Userlevel 6
When you say the last firmware upgrade, means which version? Ahmed

Did you try to run the Apple diagnostics, it might tell you what is wrong: https://support.apple.com/en-us/HT202663

I would suggest you contact GTAC for assistance if the above doesn't provide resolution.

-Gareth
Hi buddy. After reading this topic, I had a conversation with my best friend about which is better, the 2.4GHz, and the 5GHz wireless. Our conversation was very long and it's even not a discussion anymore. My point of view is 2.4Ghz one is better but he always wanting to win me by giving untruth comment. He also give me link to an article, here it is: https://gearupz.com/2-4-ghz-vs-5-ghz/. Then we contacted the webmaster of that website to ask about our problem. But after that i realize it's an affliate website, i am not believe them(although that article doesn't provide any affliate link). So Can you guys here give us any recommendation about our problem
It have been hard for our friend ship for a week
Thanks
Userlevel 5
Hi buddy. After reading this topic, I had a conversation with my best friend about which is better, the 2.4GHz, and the 5GHz wireless. Our conversation was very long and it's even not a discussion anymore. My point of view is 2.4Ghz one is better but he always wanting to win me by giving untruth comment. He also give me link to an article, here it is: https://gearupz.com/2-4-ghz-vs-5-ghz/. Then we contacted the webmaster of that website to ask about our problem. But after that i realize it's an affliate website, i am not believe them(although that article doesn't provide any affliate link). So Can you guys here give us any recommendation about our problem
It have been hard for our friend ship for a week
Thanks
Hi Edward ,
Generally speaking , the 5GHz is much cleaner and give you more advantages in the design of RF around any deployment. It has [21] non-interlapping channels to work with , while 2.4 has only 3 , which is very difficult to plan for the channel re-use.
2.4GHz has a little bit better penetration characteristics , which makes the cell size bigger , which sometimes can be very beneficial, especially when you need to have larger spot coverage and using low-throughtput applications - good example is warehouse scanners . Other then that I am always trying to use 5GHz only - there is much higher chance that I can find channel(s) which are not occupied with other RF equipment (WiFi or non-WiFi) .
Other benefit of 5GHz is that you can use 802.1ac standard which is not available for 2.4GHz . Also you can do channel bonding - e.g. use 4 channels at the same time . With 2.4GHz you can bond only 2 channels , and in enterprise environment it is close to impossible to do such things.
As a conclusion - yes , for today's needs 5GHz spectrum is much better for almost all deployments and applications with some very few exceptions.
Userlevel 2
I have more info about my problem, actually the Mcabook gets the P from DHCP then immediately loses it, if i put static IP it works, this happens only with 802.1x SSIDs.

any idea?

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