[pbphoto]

It was removed from the GUI in a release in May IIRC. I saw the comments in the r47000 build thread. I figured this out yesterday on my 1900ACSv1. You could type this into the CLI/telnet, or put it in the GUI under Administration-commands-startup. It doesn't seem to hurt anything running it every time it reboots:

#Assign WAN port the main switch vlan0
#
nvram unset vlan1ports
nvram unset port0vlans
nvram set port0vlans=0
nvram set vlan0ports="0 1 2 3 4 5*"
nvram commit

[kernel-panic69]

Why would it be vlan0ports and not vlan1ports? Also, CPU port was changed to 8 across the board, I think. Did you even attempt to do anything via the webUI?

[pbphoto]

Good questions. This is how it is configured on a fresh 1900ACSv1. Other routers will be different i'm sure. If there is a better way, I'm all ears.

root@router4:~# nvram show | grep vlan.*ports | sort
size: 27876 bytes (103196 left)
vlan0ports=1 2 3 4 5*
vlan1ports=0 5

root@router4:~# nvram show | grep port.*vlans | sort
size: 27876 bytes (103196 left)
port0vlans=1
port1vlans=0
port2vlans=0
port3vlans=0
port4vlans=0
port5vlans=0 1 16000

root@router4:~# swconfig dev switch0 show
Global attributes:
enable_vlan: 0
Port 0:
mask: 0x004e: (0) 1 2 3 6
qmode: 0
pvid: 0
link: port:0 link:down
Port 1:
mask: 0x004d: 0 (1) 2 3 6
qmode: 0
pvid: 0
link: port:1 link:down
Port 2:
mask: 0x004b: 0 1 (2) 3 6
qmode: 0
pvid: 0
link: port:2 link:down
Port 3:
mask: 0x0047: 0 1 2 (3) 6
qmode: 0
pvid: 0
link: port:3 link:up speed:1000baseT full-duplex
Port 4:
mask: 0x0020: (4) 5
qmode: 0
pvid: 0
link: port:4 link:down
Port 5:
mask: 0x0010: 4 (5)
qmode: 0
pvid: 0
link: port:5 link:up speed:1000baseT full-duplex
Port 6:
mask: 0x000f: 0 1 2 3 (6)
qmode: 0
pvid: 0
link: port:6 link:up speed:1000baseT full-duplex


This is how it looks after running the start-script:
vlan0ports=0 1 2 3 4 5*

port0vlans=0
port1vlans=0
port2vlans=0
port3vlans=0
port4vlans=0
port5vlans=0 1 16000

[kernel-panic69]

Ok, that explains things. Need confirmation across the board, but that would mean that Marvells use the same vlan mapping that the old WRT54* series and it's clones use and not the modern vlan mapping for modern routers.