I have had an intermittent problem over the last few weeks since setting up my wifi network. I have a BR200 Router and some WAC510 access points. On a number of devices now, as I move between access points the device loses its assigned DHCP IP address and the system fails to reassign an address. Going through both the Network settings and through cmd ipconfig to reset/renew an ip address does nothing. Likewise with reboot etc. If I then move the laptop back to where it was before it picks up the IP address again. The only way I have found around it is in the Windows network settings to radomise the hardware addresses. I have also had to do the same on my iPhone. This seems to cause the system to see it as a new device and re-assign an IP Address. The logs from this morning when this just happended show the device connecting - "[MAC Address] wireless clinet connected" is all i get in the wifi logs and there is nothing in the Router logs

To start with...Current firmware version on the BR200 and the WAC510?Are the WAC510 directly connected to the BR200?All WAC510 share the same SSID and wireless security configuration ?Pure local management or everything on Insight cloud management?

Internet in goes to BR200 (5.10.0.5)One WAX610 off that (9.2.0.7)Then into a managed switch GS109Tv3 (7.0.5.2)2 x WAC510 off that network (9.2.0.6)Another switch in garden office GS308T 1 x WAC510 off that network (9.2.0.6) A Wifi access points have two SSIDs (on seperate VLANs) and share configuration data. All setup through the Insight portal (aside from a non-insight managed switch in the office) I have a number of laptops/tablets/phones in the house that seem to be able to move between access points with no issues. However I have 2 laptops running Windows 10 that have issues. The issue is that a laptop that has been working gets put in standby (ie the lid is shut) and when it wakes back up again it is not assigned an IP address. If you run the Windows network troubleshooter (that resets network adapter etc) if completes with a failure "Wifi does not have a valid IP configuration). Likewise trying to use IPConfig /renew to get a valid IP address fails - it times out with 'unable to contact your DHCP server' If you shen shut the lid, go back to the other access point and open up - it correctly gets an IP address. I have not found any pattern to show that it is a single access point with the issue. The only workaround I have is the network setting to use a random hardware address.

I have noticed a difference in the setup between the WAX610 access points and the WAC510s. All the WAC510s have the other 510s listed in the 'Neighboring Access Points - Known Access Points' where as the WAX610 (which was installed first) does not have any known access points listed and currently all the WAC510s are listed as part of the 'Unknown Access Points' Could this be the issue - i cannot see any way to update the list?

Logged into the WAX610 directly, but does not seem to allow me to update the 'Neighbor AP' list. I can see the other access points in the Unknown AP List, and can move them to the 'Known AP List' but the apply button does not do anything. The button to import a file does not work either. Unlike some other settings this is not grayed out as it is cloud managed, but I cannot update the settings.

I ended up removing and the resetting the WAX610 access points. Adding it in fresh has updated the device with the correct Neighbor AP list. However the laptops that could not connect still have the same issue - no DHCP address is being issues. Anybody got any ideas...?

BR200 / WAC510 not re-assigning DHCP address when you move between access points

12 Replies

schumaku
Guru - Experienced User
Feb 15, 2021
To start with...

Current firmware version on the BR200 and the WAC510?

Are the WAC510 directly connected to the BR200?

All WAC510 share the same SSID and wireless security configuration ?

Pure local management or everything on Insight cloud management?
- jamesbrownox
  Tutor
  Feb 15, 2021
  Internet in goes to BR200 (5.10.0.5)
  One WAX610 off that (9.2.0.7)
  Then into a managed switch GS109Tv3 (7.0.5.2)
  2 x WAC510 off that network (9.2.0.6)
  Another switch in garden office GS308T
  1 x WAC510 off that network (9.2.0.6)
  
  A Wifi access points have two SSIDs (on seperate VLANs) and share configuration data. All setup through the Insight portal (aside from a non-insight managed switch in the office)
  
  I have a number of laptops/tablets/phones in the house that seem to be able to move between access points with no issues. However I have 2 laptops running Windows 10 that have issues.
  
  The issue is that a laptop that has been working gets put in standby (ie the lid is shut) and when it wakes back up again it is not assigned an IP address. If you run the Windows network troubleshooter (that resets network adapter etc) if completes with a failure "Wifi does not have a valid IP configuration). Likewise trying to use IPConfig /renew to get a valid IP address fails - it times out with 'unable to contact your DHCP server'
  
  If you shen shut the lid, go back to the other access point and open up - it correctly gets an IP address.
  
  I have not found any pattern to show that it is a single access point with the issue. The only workaround I have is the network setting to use a random hardware address.
  - jamesbrownox
    Tutor
    Feb 15, 2021
    I have noticed a difference in the setup between the WAX610 access points and the WAC510s. All the WAC510s have the other 510s listed in the 'Neighboring Access Points - Known Access Points' where as the WAX610 (which was installed first) does not have any known access points listed and currently all the WAC510s are listed as part of the 'Unknown Access Points'
    
    Could this be the issue - i cannot see any way to update the list?