Andrew's questions

I've got an issue where a Windows 2008 R2 Standard (SP1) server loses its static IP configuration upon a reboot. It's a sysprep'd image.

The following steps reproduces the problem:

• Using the SAC, set the IP using 'i'
• Use the Win32 EnableStatic() method to set an IP (and then SetGateways()) through PowerShell
• Reboot

The machine boots up with the following configuration:

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : [...]
   Autoconfiguration IPv4 Address. . : 169.254.152.31 (incorrect)
   Subnet Mask . . . . . . . . . . . : 255.255.0.0 (incorrect, was set to /24)
   Default Gateway . . . . . . . . . : 1.1.1.1     (correct)

Occasionally, the gateway is also incorrect (0.0.0.0)

The images have a script that runs 'netsh int ip reset' after sysprep finishes (before the reboot), so it appears that does not solve the issue. (the problem also happens without this step)

After the reboot, using 'i' on the SAC resolves the issue permanently. (But I'd like to know the root cause as having to run 'i' again isn't ideal)

I have a Dell PowerEdge 6248 with a 2x10Gb uplink module. I'm trying to make sense of the representation of the ports from the following snmp output:

Q-BRIDGE-MIB::dot1qVlanStaticUntaggedPorts.4081 = Hex-STRING: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

That hex string is 128 hex characters long. Each hex character represents 4 ports on the switch. Now, as it's a stackable switch I believe Q-BRIDGE-MIB contains the configuration for all units. This is where I get confused - the manual says a maximum of 12 switches can be stacked together, but:

(128 * 4 ) / 12 = 42.67 ports if the hex-string represents 12 units, or

(128 * 4) / 48 ports = 10.66 units if I am correct in assuming the hex-string represents 48 ports.

Can anyone clear up the confusion? Is my assumption that any of the 48 ports on the front can be used for VLANing not correct?

Thanks!