• Configuration
• CoreSwitching

Notes on the core switch build and configuration...

• Cisco/Linksys E4200 v1
• two for redundant operation
• a third as a cold spare
• higher-capacity power supplies
• heatsinks and thermal adhesive for switch chips
• DD-WRT standard

• custom switch driver to allow 802.1q VLAN tag remapping

Steps...

1. perform 30/30/30 reset

2. connect as 192.168.1.2/30 to its WebUI through any LAN port

3. initial login is root/admin

4. upgrade flash with dd-wrt.v24-18777_NEWD-2_K2.6_mini-e4200.bin

5. wait an additional five minutes for good measure
6. perform 30/30/30 reset

7. confirm password reset page is displayed

8. set root/admin as the new login
9. backup the CFE as routername_cfe.bin (in embeds the original interface MAC) and stash it somewhere for safekeeping

10. upgrade flash with dd-wrt.v24-20453_NEWD-2_K2.6_std_usb_nas-nv60k.bin

11. wait an additional five minutes for good measure
12. perform 30/30/30 reset
13. wait an additional five minutes for good measure

14. confirm password reset page is displayed and Firmware: DD-WRT v24-sp2 (12/31/12) std-usb-nas shows in the top-right corner

15. set root/admin as the new login
16. disable both radios and choose Apply (Save is transient and does not write to NVRAM)

17. with modern iceweasel/firefox use Web Developer Extension -> Miscellaneous -> Clear Private Data -> Clear HTTP Authentication