Recently I bought Cisco 871 Advanced Security router. In table on the product site http://www.cisco.com/en/US/products/hw/routers/ps380/products_data_sheet0900aecd8028a976.html is info that the router with this IOS image gives support for two VLANs from which one is dedicated to DMZ. I was trying to build this DMZ with SDM but without any success. Also I tried to enter the VLAN to database manually via console but I got only
Vlan can not be added. Maximum number of 1 vlan(s) in the database.
Is there any way to add the second VLAN as it should be possible?