Advanced settings for HP NC-Series QLogic nx3 Multifunction adapters

These advanced parameters are available for HP NC-Series QLogic nx3 Multifunction Server Adapters.

Property. Each adapter property displays only if the property is supported by the selected adapter. Some properties might not display if the adapter has FlexNIC enabled.

• Priority and VLAN. Enables or disables the ability to insert or remove the 802.1q tags for priority and VLAN.
  • Default = Priority & VLAN Enabled
  • Range = Priority & VLAN Disabled; Priority & VLAN Enabled; Priority Enabled; VLAN Enabled
• Jumbo Packet. The size, in bytes, of the largest supported Jumbo Packet (an Ethernet frame that is greater than 1514 bytes) that the hardware can support.
  • Default = 1514 Bytes
  • Range = 1514 Bytes; 4088 Bytes; 9014 Bytes
• Flow Control. Specifies the type of flow control that is needed.
  • Default = Rx/Tx Enable
  • Range = Disable; Tx Enable; Rx Enable; Rx/Tx Enable
• TCP Connection Offload (IPv4). Enables the offloading of TCP connections over IPv4.
  • Default = Disabled
  • Range = Disabled; Enabled
    • A TOE license is required to enable TOE on some QLogic/NetXen adapters. The TOE property is not displayed for supported adapters if a TOE license is not present. See the Release Notes for information on how to obtain a TOE license.
    • TOE is disabled system wide by default in the operating system. TOE must be enabled system-wide for it to work on the adapter itself. To enable TOE in the operating system, execute the "netsh int tcp set global chimney=enabled" command.
    • TOE will not work with the following features enabled: Windows Firewall; Internet Protocol security (IPsec); Internet Protocol Network Address Translation (IPNAT); third-party firewalls; and NDIS 5.1 intermediate drivers. Download article number KB912222 from the Microsoft website for more information.
    • TOE and RSS are incompatible on NetXen adapters. If RSS is already enabled and then you enable TOE, RSS is automatically disabled even though it may appear to be enabled. Likewise, if you enable TOE after RSS, RSS becomes disabled.
• Receive-Side Scaling. Enables dynamic load balancing of incoming traffic across CPUs.
  • Default = Enabled
  • Range = Disabled; Enabled
    • RSS is not supported on a system with a single CPU.
    • When the NC524SFP Module is plugged into the NC375i, both 1 Gb and both 10 Gb ports support RSS.
    • RSS is disabled system wide by default in the operating system. RSS must be enabled system-wide for it to work on the adapter itself. To enable RSS in the operating system, execute the "netsh int tcp set global rss=enabled" command.
    • TOE and RSS are incompatible on NetXen adapters. If RSS is already enabled and then you enable TOE, RSS is automatically disabled even though it may appear to be enabled. Likewise, if you enable TOE after RSS, RSS becomes disabled.
• IPv4 Checksum Offload. Describes whether the device enabled or disabled the calculation of IPv4 checksums.
  • Default = Rx/Tx Enable
  • Range = Disable; Tx Enable; Rx Enable; Rx/Tx Enable
• TCP Checksum Offload (IPv4). Describes whether the device enabled or disabled the calculation of TCP Checksum over IPv4 packets.
  • Default = Rx/Tx Enable
  • Range = Disable; Tx Enable; Rx Enable; Rx/Tx Enable
• TCP Checksum Offload (IPv6). Describes whether the device enabled or disabled the calculation of TCP checksum over IPv6 packets.
  • Default = Rx/Tx Enable
  • Range = Disable; Tx Enable; Rx Enable; Rx/Tx Enable
• UDP Checksum Offload (IPv4). Describes whether the device enabled or disabled the calculation of UDP checksum over IPv4 packets.
  • Default = Rx/Tx Enable
  • Range = Disable; Tx Enable; Rx Enable; Rx/Tx Enable
• UDP Checksum Offload (IPv6). Describes whether the device enabled or disabled the calculation of UDP checksum over IPv6 packets.
  • Default = Rx/Tx Enable
  • Range = Disable; Tx Enable; Rx Enable; Rx/Tx Enable
• Large Send Offload Version 1 (IPv4). Describes whether the device enabled or disabled the segmentation of large TCP packets over IPv4 for large send offload version 1 (LSOv1).
  • Default = Enabled
  • Range = Disabled; Enabled
• Large Send Offload Version 2 (IPv4). Describes whether the device enabled or disabled the segmentation of large TCP packets over IPv4 for large send offload version 2 (LSOv2).
  • Default = Enabled
  • Range = Disabled; Enabled
• Large Send Offload Version 2 (IPv6). Describes whether the device enabled or disabled the segmentation of large TCP packets over IPv6 for large send offload version 2 (LSOv2).
  • Default = Enabled
  • Range = Disabled; Enabled
• Completion Queue Size. Determines the number of Completion Queue Entries (CQEs) that can be posted in a completion queue.
  • Default = 16384
  • Range = 1024; 2048; 4096; 8192; 16384; 32768
• Interrupt moderation. If enabled, helps to reduce number of interrupts per packet, which reduces CPU utilization, while maintaining the same throughput. This feature is useful under heavy network traffic conditions.
  • Default = Disabled
  • Range = Disabled; Enabled
• Large Receive Offload (LRO). Describes whether the device enabled or disabled the segmentation of large packets for large receive offload (LRO).
  • Default = Enabled
  • Range = Disabled; Enabled
• Number of Tx Descriptors. Determines how many resources are allocated to transmit packets.
  • Default = 1024
  • Range = 1024; 2048
• Number of RX Descriptors. Determines how many resources are allocated to receive packets. Increasing receive descriptors can increase performance, which also increases the amount of system memory used by the driver. So, if too few receive descriptors are used, performance suffers and if too many receive descriptors are used the driver unnecessarily consumes memory resources.
  • Default = 8192
  • Range = 1024; 2048; 4096; 8192; 16384
• Number of RX Descriptors (Jumbo). Receive Descriptors determine how many resources are allocated to receive packets. This property is only applicable if Max Frame Size is greater than 1500.
  • Default = 4096
  • Range = 1024; 2048; 4096; 8192