OS: Windows Server 2008 Standard Service Pack 1I have a PC with an ethernet card (IP:10.0.0.1).When i run a PING from this PC to its own IP address (PING 10.0.0.1) it gives me a response even if the network cable is disconnected from the NIC.In my other PC, running Windows XP, this is not the case: when i disconnect the network cable from the NIC the PING stops responding.I need this behavior to be like in Windows XP.Thank you.Thursday, March 04, 2010 2:56 PM
I'm not completly shure about it: But I think, that it has something to do with the network adapter itself. If it does an automatic hardware-loopback, if no cable is connected, it will respond to a PING...
That means, it should not have anything to do with the OS itself...Thursday, March 04, 2010 3:04 PM
Thanks cal77 for your reply.
Unfortunatley, this behavior is observed on two different machines
running Windows Server 2008, and on all four network adapters:
NIC1: VIA Rhine II (onboard) - 10.1.0.1/255.0.0.0
NIC2: Realtek RTL8139 (PCI) - 10.0.0.1/255.0.0.0
NIC1: SiS 900 (onboard) - 10.1.0.2/255.0.0.0
NIC2: Realtek RTL8139 (PCI) - 10.0.0.2/255.0.0.0
The Windows network configuration is mostly the default, only the static IP/Mascs where configured.
Also, "Network Load Balancing (NLB)" was installed and configured over the two PCI NICs.Thursday, March 04, 2010 6:29 PM
I am not sure but still I am sharing my gut feeling below.
Ideally it should not respond to 220.127.116.11 with default settings. If MAC/PHY loopback bit is set in loopback register (or its equivalent) then this will loop back data. But this is not default setting.
If you are looking for just loopback from IP stack use 127.0.0.1, or know how to set MAC/PHY Loopback.
Vishal Jain, MSFTFriday, March 05, 2010 8:44 AM