Effective Date - HP MPX200 Release Note

Windows drops the IP connection
Certain I/O workloads can cause Windows to drop the IP connection, resulting in removal of a
LUN.
To restore the IP connection, reboot the system. To avoid dropped connections:
Reduce the I/O workload.
Reduce the application transfer size.
Windows registry modifications
CAUTION:
that require reinstallation of the operating system. Be sure to back up the registry before making
any changes.
If you use a method other than the HP MPX200 Multifunction Router Windows software kit to
update, you add the Tcp1323Opts and Disk TimeOutValue to the registry.
Timestamps enable TCP to accurately measure round-trip time (RTT) to adjust retransmission timeouts.
The timestamps option provides two 4-byte timestamp fields in the TCP header. One field records
the time of the initial transmission; the other field records the time on the remote host.
There are two methods to add Tcp1323Opts to the registry. HP recommends that you use the first
method.
IMPORTANT:
Router Windows software kit, Tcp1323Opts is added to the registry automatically.
Method 1
To enable timestamps, under:
HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters, set the Tcp1323Opts
entry to REG_DWORD = 2.
To extend the timeout period, under: HKLM\System\CurrentControlSet\services\Disk,
set the TimeOutValue entry to REG_DWORD = 120.
Method 2
Make the change to the registry, or cut and paste the following lines to a text file named:
tcp1323opts.reg:
tcp1323opts.reg.
:
REGEDIT4
[HKEY_LOCAL_MACHINE\SYSTEM\Current-
ControlSet\Services\Tcpip\Parameters]
"Tcp1323Opts"=dword:00000002
Double-click the tcp1323opts.reg file to add the changes to the registry for the iSCSI initiator.

Effective date

July 201 1
Use the Registry Editor at your own risk. Using it incorrectly can cause serious problems
When you install the Windows iSCSI initiator from the HP MPX200 Multifunction
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