Dell Emulex Family of Adapters - Manual (Page 596)

Emulex Drivers for Windows User Manual P010077-01A Rev. A
3. Configuration
NIC Driver Configuration
596
NetworkDirect 0—Disabled
1—Enabled (default) Windows Server 2012 R2 The Network Direct feature
enables an offloaded RDMA
interface for SMB 3.0 network
attached storage traffic using
Microsoft's SMB Direct protocol.
For best performance, priority
flow control (PFC) should be
configured on the network switch.
Emulex defaults to priority (PFC) 5
for ROCE traffic, although it will
still work without PFC enabled.
Network Direct MTU 256
512
1024 (default)
2048
4096
Windows Server 2012 R2 The maximum transmission unit
(MTU) or frame size for ROCE
traffic may be configured with this
parameter.
NVGRE Task Offload
(also known as
Encapsulated Task
Offload) Disabled
Enabled (default) Windows Server 2012
Windows Server 2012 R2
Note: For
OCe14000-series
adapters only.
NVGRE Task Offload enables the
offloading of network
virtualization using GRE tunneling
on the NIC adapter. NVGRE offload
works in conjunction with VMQ.
Packet Size 1514 (default)
9014
8222
4088 Windows Server 2008
Windows Server 2008 R2
Windows Server 2012
Windows Server 2012 R2 Configures packet size for
OneConnect NIC only.
This parameter determines the
maximum packet size transmitted
and received on the interface. A
1514 byte frame size is standard,
while larger packets are called
jumbo frames.
Using a higher frame size is
generally more efficient, but it
uses more system memory. A
larger frame size also requires
support on the network switch.
Jumbo frames are IPv4-only
frames; IPv6 packets will be
fragmented by LSO. Switches and
the peer should be configured to
accept the specified packet size or
the size will be negotiated to the
common smallest size.
Table 3-3 Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 NIC
Driver Options (Continued)
Option Name Acceptable Values
Supported Operating
Systems
Definition