legacy network adapter windows 2003 64bit and nlb

hello,

i test nlb clustering on hyper-v first before rolling out environment.  have test on both windows 2003 32bit , 64bit.  configured 2 machines each 1 synthetic network card.  followed guide on how create nlb cluster , configured adapters accordingly.  once nlb setup lost network connectivity machines.  removing nlb bring network connectivity.  based on previous post decided remove synthetic network adapter , install legacy network adapter.  time nlb worked.

i proceeded same thing on windows 2003 64bit virtual machines.  @ point realized there no windows 2003 64bit drivers legacy network adapter. 

1)why nlb fail using native network adapter?
2)will there drivers legacy network adapter on windows 2003 64bit?

thx
farah

if remember correctly - issue fixed in next publically available build.

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Windows Server  >  Hyper-V