I have a pair of B5c's. I have setup one on my cisco 3750G in a large routed network. The 3750 is connected via a trunk to the rest of the network and routed from there.
I have not been able to connect with either B5c's via the WiFi management interface at all. The only way I could talk to it it is to connect both my PC and the B5c on two ports of the switch set in the same VLAN, right out of the box.
I was able to connect to the wireless recovery network and factory reset the B5c.
Once I connected, I upgraded and unlocked them both, set all the parameters I needed, and brought them out to be installed. I discovered that even though I set a default gateway, the B5c would not talk to anything outside it's network.
I have a VLAN for all our wireless devices for management (VLAN 240). I set the trunk native port to this VLAN.
If I set my PC on this VLAN I could ping and connect to the management interface.
I tried setting the Management VLAN on the B5c to 240. This resulted in me not being able to connect or ping the B5c again. My config on the switch is this: interface GigabitEthernet1/0/47
description B5c WW Wireless link to FS8
switchport trunk encapsulation dot1q
switchport trunk native vlan 240
switchport mode trunk
Also any ideas on why I can't communicate on the wireless out of band management interface? I would set my wireless interface to 10.1.240.100/24 and the B5c to 10.1.240.73/24 and I will not talk.