Hi NG,
i've some problems on layer 2.
On a 3560 PoE switch running IOS 12.2(25)SEB2 we have some aironet 1200 accesspoints running 12.3(2)JA2.
There are 2 vlan configured, vlan 10 for the managment of the ap and vlan 20 for the clients running on the wlan.
switchports are configured like this
interface FastEthernet0/2 switchport trunk encapsulation dot1q switchport trunk native vlan 10 switchport mode trunk end
fastethernet on ap is configured like this
interface FastEthernet0.1 encapsulation dot1Q 10 native no ip route-cache bridge-group 1 no bridge-group 1 source-learning bridge-group 1 spanning-disabled ! interface FastEthernet0.20 encapsulation dot1Q 20 no ip route-cache bridge-group 20 no bridge-group 20 source-learning bridge-group 20 spanning-disabled ! radio on the ap like this ! interface Dot11Radio0.20 encapsulation dot1Q 20 no ip route-cache bridge-group 20 bridge-group 20 subscriber-loop-control bridge-group 20 block-unknown-source no bridge-group 20 source-learning no bridge-group 20 unicast-flooding bridge-group 20 spanning-disabled
preamble are forced to use long no aironet extensions beacon dtim-period 10
so far the configuration ;)
Now when a client roams from ap to ap the cam table looks like this
Vlan Mac Address Type Ports
---- ----------- -------- ----- 10 DYNAMIC fe0/2 (new ap) 20 DYNAMIC fe0/3 (old ap)
and ping is not working
after some seconds looks like this
Vlan Mac Address Type Ports
---- ----------- -------- ----- 10 DYNAMIC fe0/2 (new ap) 20 DYNAMIC fe0/2 (new ap)
ping is working again (normal cause the mac is in the right vlan 20)
when the client stay long enough the the cam table looks like it should
Vlan Mac Address Type Ports
---- ----------- -------- ----- 20 DYNAMIC fe0/2 (new ap)
and with every roaming the same game begins again. with a clear of the cam table the problem is solved till the next roamingattemp.
the problem exist only with one type of wlan clients (aironet 350) and I can see the deassoc and the assoc on the two accesspoints.
The switch can't be the problem. In the back there were some 3500xl inlinpower switches installed with the same problem running old 12.0x ios release.
any help you know :)