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New Member

clients on Flex-Connect AP loses IP addresses.

Hi all,

I have a funny (actually not funny, more frustrating problem)
I'm using Flex connect to all my remote site. l think I have 20 different locations. All works perfectly except one.
VLAN 509 = Guest
VLAN 510 = VLAN for production (PEAP)
Vlan 511 = Native VLAN


Switch port:
interface GigabitEthernet1/0/45
  switchport trunk native vlan 511
  switchport mode trunk
  SRR-queue bandwidth share 1 30 35 5
  SRR-queue bandwidth shape 30 0 0 0
  priority-queue out
  mls qos trust DSCP

Its only on the VLAN 510 I have the issue.
- VLAN 510 = a mix of wireless and Wired clients.
- Wired clients and wireless client use the same DHCP server.
- Wired clients work fine all the time.
- Wireless clients loses the connection, or their IP address.

Almost every morning I need to reload the AP. After a reload the client start forwarding traffic.

any suggestions to what might be wrong?


New Member

No clever hints?

No clever hints?

New Member

Ok. Lets try with a little

Ok. Lets try with a little more information.
Maybe other have the same issue?
If I change the native VLAN on the Access point from VLAN 511 to VLAN 1. The AP starts to forward packets again, at least for awhile.

If I reload the AP it starts to forward packets again, for like a day.

The AP Config:



Some debug information:

A debug client trying to access VLAN 509 = all ok



A debug client trying to access VLAN 510 = fail.



A debug where cliet access vlan 509, then 510, then 509 and then 510.


I hope some one can help.