ho scritto all'assistenza della castelnet (la ditta che produce l'AR520) e questa è la configurazione per far funzionare come bridge il router....se qualcuno è interessato mi scriva che posso inviarvi il file .doc corredato di immagini
HowTo configure the Bridge connection
01- Use browser and enter address
http://192.168.1.1 to access the GUI of AR520.
02- After Login window pop-up, enter the login username and password.
(Default username and password is root /root)
03- Choose Home Quick Configuration menu, click Delete button to delete the default WAN connection.
04- Choose Home Quick Configuration menu, set the bridge info.
Operation Mode:Enable
Ecapsulation :Bridge LLC or Bridge VC (provide from ISP)
VPI :Provide from ISP
VCI :Provide from ISP
Bridge :Enable
Default Route :Disable
05- Click the “Submit” button under the page.
06- Choose Home Home menu See the “WAN Interface” frame.
If it has an “eoa-0” display to show the bridge connection is success.
If it is display “No exiting WAN Interface” to show set fault, please retry again.
07- Close the DHCP service
LAN DHCP Mode DHCP Mode:None Submit
08- Set the IP on you PC that provide from your ISP.