I have a Cisco 881w router, which has a built-in WLAN module. Technically it has to be configured as two separate devices with two separate VLANs and subnets (one of each for WLAN and one of each for LAN). So, I have used default VLAN1 for the LAN subnet 192.168.0.0/24 and created a new VLAN10 for the WLAN subnet 192.168.1.0/24.
Everything works fine, including NAT, I can access Internet from both subnets (i.e. from both, clients in LAN and clients in WLAN). I also can ping from a client in the LAN (VLAN1) to a client in the WLAN (VLAN10).
But: I can't ping vice versa, so I get no response when I ping from WLAN (VLAN10) to LAN (VLAN1). Any ideas what could be the problem here? I have attached both configs, from the normal router module and from the WLAN module.
Thanks in adavance for your help!
Kind regards, Matthias
generally, 99% of Ping working in one direction only problems are caused by a (personal) FW involved.
Are you able to Ping from one device in VLAN1 to another in the same VLAN?
If yes, are you able to Ping from your router to a device in VLAN1? And from VLAN10 to your router VLAN1 interface?