LightPulse Fibre Channel PCI Host Adapter How to Guide
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You can also add or modify the topology entry in the Windows NT registry as shown below.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lp6ndlan
x
\Parameters
(where
x
is the adapter suffix)
topology
REG_SZ
default is loop; set to loop, pt2pt, or both.
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Maximum Transfer Unit
This parameter establishes the maximum transmission unit (MTU) for a network interface.
The MTU is the maximum packet size, in bytes, that the transport will transmit over the
network. The packet size includes the transport header.
The MTU is set to 5DC (default) during installation. To view or change this entry without
directly modifying the registry, access the LAN registry parameter window and make changes
there.
A second method is to run the registry configurator program (lp6conf.exe) which came with
the Emulex Windows NT driver. After running configurator program, the system must be
rebooted.
You can also add or modify the MTU entry in the Windows NT registry as shown below.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lp6ndlan
x
\Parameters\tcpip
(where
x
is adapter suffix)
MTU
REG_DWORD
default is 5DC; from 0X44—-0XC350.
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802.3 SNAP
The Emulex Windows NT IP driver uses the 802.3 SNAP frame encoding format. By default,
Microsoft Windows NT TCP/IP stack transmits DIX Ethernet format only, but is able to
receive both DIX and 802.3 SNAP formats. Changing this registry value to 1 forces Windows
NT TCP/IP to transmit Ethernet packets using 802.3 SNAP encoding.
Because this registry change affects all adapter cards using TCP/IP (for example, Ethernet and
Fibre channel host adapters) in the computer, every card must support 802.3 SNAP encoding.
Add or modify the ArpUseEtherSnap entry in the Windows NT registry as shown below.
