Just to make sure I understand, your whole config works, in that outside users can access the servers using the public IP and inside users can access the servers using the private IP, but you just can't access the inside servers from the inside (LAN)...
The second message, C6KENV-4-LOWER_SLOT_EMPTY is a severity 4 message, a warning, and generally 0-4 are important and shouldn't be ignored. If the Airdam is installed properly this message shouldn't appear. Maybe it came loose during shipping? May...
Next time you pose a question provide more details please as I can only guess at this point. The factsheet says this switch can support 100 gbps total throughput and that it has 48 gigabit Ethernet ports. Did you set all the ports to the correct spe...
To list trunks use show interface trunk.show vlan is not showing any interfaces for vlan 30 because you did not assign any interfaces to vlan 30! switchport trunk allowed vlan 30 doesn't assign that port to vlan 30, but merely permits vlan 30 to pas...
