I'm having a problem that I am sure is just a quick fix changing something in the configuration of my 5508. I am unable to ping a device on my wireless VLAN from a device on the same wireless VLAN. I am able to ping, and be ping from devices on other VLAN's on my network. The devices on my wireless VLAN are up and operational, I just can't manage them from a device on the same VLAN.
What is the configuration for "P2P Blocking Action" in WLAN Advanced settings ? It should not be set to "Drop"
In normal operation you should be able to ping each other in the same WLAN
If you connect a wired machine to the same vlan, do you get the same results?
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Tried this today. A wired device on the same VLan can ping a wireless device. So any wired device can ping on the VLan or to a different VLan on our network. I went to another wireless VLan that is configured on the same 5508 controller and the same thing happens. Can't ping two wireless devices on the same VLan but can ping devices on a different VLan.
When you ping a destination wireless device from a source wireless device and ping times out - what do you get in your arp cash of the source? Does it MAC address get resolved?
Hm, so there is no arp's comming back in responce to the request. Can you mirror VLAN traffic up from the WLC and check what is happening with ARPs when wireless client attempts an arp-request to another wireless client? Does that traffic get forwarded up to the VLAN (ignoring the setting of Peer-to-Peer Disable) or will you not see that request at all.