The default lifespan of ARP cache entries was lowered from 10min in Windows Server 2003 to a random value between 15 and 45sec in Vista/W2K8. As a result, the PVS bootstraps are twenty times more likely to experience a timeout during a Vista/W2K8 boot.
The workaround is to increase the ARP cache entry lifespan for PVS-bound NIC’s:
1. Open a command shell window. At the command prompt, enter the following command:
netsh interface ipv4 show interfaces
2. To set the ARP cache entry lifespan to 600 seconds, enter the following command:
netsh interface ipv4 set interface <PVS interface number> basereachable=600000
3. To verify the new setting, enter the following command:
netsh interface ipv4 show interface <PVS interface number>
The “Base Reachable Time” should be set to 600,000 ms, and the “Reachable Time” – to a value between 300,000 and 900,000 ms.