this error happens with a default config, I tested in our lab. Anyone doing NAT from CCA2.1?
updated pic also, maybe more clear... also attached. I can delete the Firewall settings, delete the NAT settings. Create a vlan, try to use NAT and BOOM, error
This may be a configuration error. Are you trying to use vlan 100 for outside interface? VLAN 100 is used for voice subnet. You may want to use interface fastethernet 0/0 (WAN) for outside interface.
of course im using FastEthernet0/0.
From a brand new config this is how the error is reproduced.
First delete all firewall settings
Second delete NAT settings
create a VLAN, say 50, create DHCP pool, etc
Make sure FastEthernet0/0 is DHCP
now go into NAT, and try anything that makes a change and requires saving... BOOM error
this is with CCA2.1
from the CLI I have NAT outside for FastEthernet0/0
Nat inside for the VLANs 1 and 50, but not the BVIs (maybe thats an issue)
I also have attempted doing the "VLAN database" and recreating the vlan.dat
so I can ping from the FastEthernet0/0 to outside, but can not ping the outside from any other interface (vlan)