
2–Configuring NIC
QLogic Device Windows Property Pages
2-10 SN0054671-00  B
Flow Control Sets the hardware flow control parameters. 
Registry Key: *FlowControl 
Default: Rx and Tx Enabled
Value s:  Disabled, Rx Enabled, Tx Enabled, 
Rx and Tx Enabled 
Health Monitoring Checks health of firmware, monitors normal opera-
tion, and ensures recovery of the firmware. 
Interrupt Moderation  Allows interrupt coalescing during receive and trans-
mit operation. 
Registry Key: *InterruptModeration 
Default: Disabled 
Value s:  Enabled, Disabled 
IPv4 Checksum Offload  Enables and disables IPv4 checksum offload. 
Registry Key: *IPChecksumOffloadIPv4 
Default: Rx and Tx Enabled. 
Value s:  Disabled, Rx and Tx Enabled, Rx 
Enabled, Tx Enabled 
Large Receive Offload Enables and disables TCP large receive offload. 
Enables collapsing of multiple MTU size TCP packets 
into bigger segments before handing these over to 
the host. 
Registry Key: LRO 
Default: Enabled 
Value s:  Enabled, Disabled 
Large Send Offload V1 IP4  Enables and disables TCP large send offload. Allows 
host TCP stack to give bigger than maximum seg-
ment size (MSS) packets to the driver, and then with 
the help of hardware, splits the larger segments into 
MTU size packets before sending them on the wire. 
Registry Key: *LsoV1IPv4 
Default: Enabled. 
Value s:  Enabled, Disabled 
Size of LSO v1: 64K 
Table 2-1. Windows Driver Configurable Parameters  (Continued)
Property Description