It means exactly what it says. Nothing more, nothing less. Only enable options that you need. And disable the options you don't need.
This is what I consider a base line.
Before flashing new firmware.
- Make a backup cfg file and label it with the firmware version currently running on the router. (I save this with the associated trx firmware file in a safe place, along with the next item, if needed).
- Save any custom settings to the jffs partition in a safe place.
- Remove all USB devices from the router.
- Reboot via the gui and let it settle for 5 minutes after it comes up again.
Flash new (or existing) firmware.
- Flash new firmware (and in some cases, re-flash the existing firmware if any random, unexplained glitches are still causing issues).
- Reset to factory defaults via the gui.
- After the router has rebooted (point above), do a hard reboot (pull the power plug), wait a couple of minutes and then power it up again.
After new firmware loaded.
- Use the wizard to connect to your ISP.
- Use new ssid's for all bands and radio's (most likely easier to do after the wizard completes for dual 5GHz band radio's capable routers). You can reuse the old passwords though.
- Disable media server.
- Disable network share.
- Disable NFSD.
- Disable FTP.
- Change device name (if needed), set Force as Master Browser and indicate the Work Group name (these steps are optional for some home users).
- Disable WPS.
- Disable WDS.
- Uncheck Xbox and B/G protection (Both bands).
- Wireless Mode: Auto (default).
- Control Channel: set manually after testing each channel.
- Preamble Type: Short.
- Spanning Tree Protocol: Disabled.
- IPv6: Disabled.
- Enable DoS protection: Disabled.
- Set time zone to your area.
- Format JFFS partition at next boot: Yes.
- Any other options not specified above is left at it's default setting following the above reset to factory defaults above.
At this point, reboot the router (via gui) twice, waiting 5 minutes before the second reboot (this allows the JFFS partition to be formatted and then available).
Now, if needed, Enable JFFS custom scripts and configs. Reboot and wait 5 minutes after the router comes up.
This is where I would create another cfg backup and name it with the firmware version just installed. Save this as the 'base default' (but remember that if you use it to use new ssid's and to format the JFFS partition again too).
At this point I will test different channels for each band (and /or radio) to find the best for that specific environment.
After finding the best channel and if things are stable at this point for an extended period (at least a week), other available router options may be introduced one at a time and added to as (and if) they prove stable.