When link aggregation is enabled on an Xserve (Late 2006) computer with an Intel processor and you are using both built-in Ethernet interfaces, Lights Out Management (LOM) services may become inaccessible.
Xserve computers with Intel processors can be configured to use either Link Aggregation or be accessible via Lights Out Management. However, both cannot be used at the same time.
For more information on Link Aggregation, see Mac OS X 10.4 Help: Combining Ethernet ports and Mac OS X 10.5 Help: Combining Ethernet ports.
For more information on Lights Out Management, see What is Lights Out Management?