Same issue here. No link aggregation works when
connecting both ethernet ports to a Netgear GS748T.
Part of ifconfig's output shows that line:
partner system: 0x0000,00:00:00:00:00:00 key: 0x0000
port: 0x0000 priority: 0x0000 state: 0x00
All these "0" in that line bode ill. I think that
behind partner system there should be a valid
ethernet address?
Jomel I really tend to believe your problem is how you switch is setup. RadUS posted that he was able to get it working on an Xserve and in the other post you made you said that System Pref:Network showed switch problem. The problem we have is with the Mac Pro Intel and it "says the switch is fine". The thing is it does not set the en0 & en1 MAC addresses correctly.
On the NetGear I would look at a few things.
1. Make sure LACP is set On and to "Passive" on the Ports for link aggregation.
2. DO NOT have any "Trunking" active. Apple does not do trunks.
3. The Switch should not really have any defined trunk or Link aggregation because LACP should handle it automatically. I have heard 2 sides to this and some switches need some defined setup for aggregation to work with Apple OS. According to Apple, aggregation should be controlled wholly by the OS through LACP.
4. Maybe the NetGear is incompatable with Apple link aggregation. Look to see if the firmware is up-to-date on the Netgear switch.
RadUS might be able to help you since he got this working on an Xserve.