Read the page below about Layer 2 and Layer 3 switches and I think your questions will be answered. If not, let me know. http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_1-2/switch_evolution.html
One question to ask is: What is a secondary? A secondary is just that an additional IP address that can be assigned to an interface that already has an IP address; a second IP address, this way you can on a particular VLAN (vlan 1 in your case) ...
You can find Cisco refurbished original CF or some Smart Modular AVL Cisco approved memory in the market on this 28XX pretty easy:http://simondirect.com/store/index.php?main_page=index&cPath=7
different controlers on some & some it works fine. in addition some of the ATA cards are even different thickness, smart makes a thiner version for the ATA-1-64regards,geoffwww.simondirect.com
