Check whether the problem is with all the PCs or only with specific clients. I meant, try pinging from PC 1 to all other PCs and verify in this manner.Then accordingly, perform the following.
In all the wireless PC's, while configuring the IP addres, also configure the default gateway. This default gateway should be the next hop router address. Check whether you have configured this. If not, do it. Also, ensure the router have route in its routing table to all the networks of these wireless clients. Probbly, this should solve your problem.
I don't think there is any problem with your router. It seems like the problem is at the access level. More questions than answers to your problem:
1. Have you tried to ping a wireless PC from a wired PC? I know you tried to access a wired PC from a wireless PC. Try the other way around.
2. Are you using any software to connect wireless interface to the network? For example, Cisco Aironet Client Utility, Intel ProSet may be kicking in some firewall properties into the wireless interface.
Try to use Windows OS wireless client settings instead.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...