Monitoring Apple's 802.11n Airport Extreme

Thanks to the info posted by Erik Romijn at http://www.uname.nl/closer-look-airport-extreme/, I now have the Airport Extreme being tracked by mrtg for graphs. For those wishing to do the same, the important interfaces are:

• 1 - gec0 - ethernet traffic on the home side
  
• 2 - ath0 - wireless traffic
  
• 5 - vlan1 - ethernet traffic on the provider side
  

There are other interfaces as well; wlan0 is the madwifi driver (and best I can tell, irrelevent), and bridge0, which sees all traffic (again, irrelevent).