Hello Dear,

the reason you are able to ping the loopback ip is because the ping packets are sent untagged on the trunk i.e. they are sent using Vlan 1 or the native Vlan. Specify a non native vlan svi as the source in the ping and see if it passes. e.g. ping x.x.x.x source y.y.y.y.

You have configured trunk on the switches but are these switches directly connected... probably not and that's because you have some sort of a Wireless device between the switches that has to be at least layer 2 and essentially is the device you should be trunking with..But then i do not know if you can trunk with the wireless device but if the device is Layer 1 the configuration should work but again it is not working so i believe that you should investigate the issue from the wireless perspective.

change the interface mode to dynamic desirable and see if a trunk is negotiated, if the trunk is negotiated then i guess the wireless device is layer 1 and if the trunk is not negotiated then the device is at least layer 2 and that might be the problem.

switchport mode dynamic desirable

and check using

show interface gi4/24 switchport

check the "operational mode", the administrative mode should be "dynamic desirable"

Regards

Rohit

Make sure the layer 2 vlan definitions are in both devices. Verify with a "show vlan" command . Your vlans should show active on both sides. The trunk config is ok but thats the trouble with forcing on a trunk it will say its trunking as long as you have a layer 1 connection even if its not working . As far as trying to pass it wirelessly can't help you , have never tried it and is not a common practice. What are the devices it is passing thru , did you check the wireless device docs for setup info on something like this ?