I have migrated three servers from physical to guest using windows 2008 r2 with hyper-v.
1)Host: DELL R720 with Win 08 r2 enterprise edition
2)Guest: windows 2008 r2 standard edition
I used dedicated NIC (Intel Gigabit 4p I350-T Adapter) for guest OS. But when I ping from guest OS to other any physical servers, the time will appear >1ms randomly ( the normal should be <1ms).
But if i ping from physical to physical servers, it will be <1ms.
I try the below method, but the result is the same
update the NIC drivers and windows update to the latest
Disable the offload on NIC.
Changing the cable and network switch