Intel(R) 82574L Gigabit Network Connection settings
There are 2 NIC adapters – Intel(R) 82547L. The first physical NIC is for the management [RDP, file copy, Hyper-V Manager] and the second one is for VMs. Here is the configuration for the physical NIC.
Intel(R) 82574L Gigabit Network Connection
Configure… -> Advanced:
Gigabit Master Slave Mode – Default Auto Detect
Interrupt Moderation – Default Enabled
Jambo Packet – Not Default 9014 Byte
Jambo Packet enables capability for TCP/IP packets.
Good for situations where large packets make up the majority of traffic. Causes additional latency.
Jumbo Packets can reduce CPU utilization and improve wire efficiency.
Jumbo Packets are larger than standard Ethernet frames, which are approximately 1.5k in size.
Large Send Offload(IPv4) – Default Enabled
Large Send Offload(IPv6) – Default Enabled
Locally Administered Address – Default
Log Link State Event – Default Enabled
Max number of RSS CPUs – Default 8
Preferred NUMA Mode – System Default
Priority & VLAN – Default Priority & VLAN Enabled
Receive Side Scaling (RSS) – Default Enabled
Receive Side Scaling Queues – Default 1 Queue
Performance Options
Adaptive Inter-Frame spacing – Default Disabled
Flow Control – Default Rx & Tx Enabled
Interrupt Moderation Rate – Default Adaptive
Receive Buffers – Default 256
Transmit Buffers – Default 512
1 queue is used when low CPU utilization is required.
2 queues is used when good throughput and low CPU utilization are required.
4 or more queues are used for applications that demand high transaction rates such as web server based applications. With this setting, the CPU utilization may be higher.
Starting RSS CPU – Use Default 0
Allows the user to set the preferred starting RSS processor. Change this setting if the current processor is dedicated to other processes. The setting range is from 0 to the number of logical CPUs – 1. In Server 2008 R2, RSS will only use CPUs in group 0 (CPUs 0 through 63).
TCP/IP Offloading Options
Wait for link – Default Auto Detect
Intel(R) 82574L Gigabit Network Connection #2
The second NIC is for VMs. The settings are almost the same.
Jambo Packet – Not Default 9014 Byte
TCP/IP Offloading Options are enabled
Virtual Machine NIC settings
Configure… -> Advanced:
IPv4 Checksum Offload – Rx & Tx Enabled
Jambo Packet – 9014 Byte
Large Send Offload Version 2 (IPv4) – Enabled
Large Send Offload Version 2 (IPv6) – Enabled
TCP Checksum Offload (IPv4) – Rx & Tx Enabled
TCP Checksum Offload (IPv6) – Rx & Tx Enabled
UDP Checksum Offload (IPv4) – Rx Enabled
UDP Checksum Offload (IPv6) – Rx Enabled
