4th gen Extreme in wireless bridge mode; are the LAN ports available?

I have purchased one of the new Airport Express models, and use that as the primary router. I want to use my older (4th gen) Airport Extreme in wireless bridge mode, and connect some wired devices to the switch ports on the extreme....

Wireless Bridge mode is working fine - over 5Ghz no less - but the LAN ports don't seem to work....