HP Elitebook 8470P knocks EAP225 off the network

HP Elitebook 8470P knocks EAP225 off the network
HP Elitebook 8470P knocks EAP225 off the network
2021-06-15 21:02:16 - last edited 2021-06-23 19:18:07
Model: EAP225
Hardware Version: V3
Firmware Version: 5.0.3 Build 20210316 Rel. 67358

Hi all,

 

I have a HP Elitebook 8470P laptop that under normal circumstances is connected to the LAN only via WiFi. This laptop is running Linux Mint 20.1.

 

This has worked flawlessly for years until one week ago when I introduced an EAP225 WAP to the LAN as our new and only wireless access point on the network. Since then I have seen what appeared to be many intermittent EAP225 device crashes where the EAP225 removes itself from the network and I have now narrowed the problem down to this laptop. This problem seems to occurs when the laptop is suspended, later rewoken and upon reconnecting to the EAP225.

 

Once the EAP225 SSIDs have effectively vanished, my process for getting them to reappear is to CAT5 cable connect the laptop to the poe switch that powers the EAP, start up Omada Controller software running on the laptop and this manages to re-adopt, re-provision and revive the EAP225 back to life to the point where it's SSIDs are visible and where WiFi clients are once again able to reconnect to it.

 

This problem occurs when using either 5ghz or 2.4ghz channels.

 

The EAP225 is running the firmware 5.0.3 Build 20210316 Rel. 67358 which is the latest available at this time.

 

Does anyone have any idea what might be going on with this and what I might do to stabilize things?

 

Many thanks,

Joe

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#1
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1 Accepted Solution
Re:HP Elitebook 8470P knocks EAP225 off the network-Solution
2021-06-23 19:17:20 - last edited 2021-06-23 19:18:07

After a further week of testing with the same laptop, the same EAP225 and Omada Controller software now removed, things remain stable.

 

The setup described in post 1 above along with Omada Controller software in use appears to trigger an EAP225 crash. Not great for a business class access point device to be honest.

 

Maybe this will get fixed in a future firmware update but this particular and exact setup might be considered so niche, it might not be on TP-Link's radar as an issue to fix.

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#6
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Re:HP Elitebook 8470P knocks EAP225 off the network
2021-06-15 21:53:47
Replying to my own post, I perhaps should have kept on hacking a little more before posting. The solution I've landed on is to use the 2.4GHz band with the laptop whilst limiting the radio channel width to 20MHz on this band via Omada Controller. This appears to have stabilised things which must mean that my HP Elitebook is a legacy device so far as the EAP225 is concerned (well it was built in 2012 tbf).
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#2
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Re:HP Elitebook 8470P knocks EAP225 off the network
2021-06-17 06:47:39 - last edited 2021-06-17 06:48:16

@JoeJoeJoe . I've experience Heartbeat missed when using EAP225 Outdoor. This is because i use 30m Cat5 Cable connected to EAP225. I think it's because the device it self. But after trying to connect mesh with my second EAP225 outdoor and do speed test, my root EAP225 outdoor always show heartbeat missed. This always happen after doing speed test.

 

After that i tried to change from 30m to 15m cable. Until now the device had no problem like before.

 

Maybe my experience has the same as you. Hope this will help.

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#3
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Re:HP Elitebook 8470P knocks EAP225 off the network
2021-06-17 07:50:35

Hi @waldi.top thanks for your reply. Whatever is going on here isn't cable length related, I'm using short patch cables and I'm testing indoors within 10ft of the EAP225. As an aside the thing that I mentioned in my 2nd comment that I thought was the solution didn't fix the problem, the instability and EAP225 crashes persisted. 

 

I continued testing and found that the EAP225 was horribly unstable with my HP Elitebook when registered and provisioned with Omada Controller and it has become a lot more stable since I've "forgotten" the device in there, stopped using Omada Controller and when I use and configure the EAP225 solely via it's direct HTTP interface.

 

I have no idea what's going on with it tbh, it feels bug ridden with my setup with this laptop and I've come close to giving up and sending it back but since it appears to have stabilized at the moment, I'm going to give it one last chance to remain stable and working before throwing the towel in.

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#4
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Re:HP Elitebook 8470P knocks EAP225 off the network
2021-06-19 09:49:14
You may have a newer laptop to do comparison test, so that you can figure out the issue is on your laptop or on EAP.
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#5
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Re:HP Elitebook 8470P knocks EAP225 off the network-Solution
2021-06-23 19:17:20 - last edited 2021-06-23 19:18:07

After a further week of testing with the same laptop, the same EAP225 and Omada Controller software now removed, things remain stable.

 

The setup described in post 1 above along with Omada Controller software in use appears to trigger an EAP225 crash. Not great for a business class access point device to be honest.

 

Maybe this will get fixed in a future firmware update but this particular and exact setup might be considered so niche, it might not be on TP-Link's radar as an issue to fix.

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#6
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