Users Guide
Table Of Contents
- Table of Contents
- 1 Regulatory and Safety Approvals
- 2 Functional Description
- 3 Network Link and Activity Indication
- 4 Features
- 4.1 Software and Hardware Features
- 4.2 Virtualization Features
- 4.3 VXLAN
- 4.4 NVGRE/GRE/IP-in-IP/Geneve
- 4.5 Stateless Offloads
- 4.6 Priority Flow Control
- 4.7 Virtualization Offload
- 4.8 SR-IOV
- 4.9 Network Partitioning (NPAR)
- 4.10 Security
- 4.11 RDMA over Converged Ethernet – RoCE
- 4.12 VMWare Enhanced Networking Stack (ENS)
- 4.13 Supported Combinations
- 4.14 Unsupported Combinations
- 5 Installing the Hardware
- 6 Software Packages and Installation
- 7 Updating the Firmware
- 8 Link Aggregation
- 9 System-Level Configuration
- 10 PXE Boot
- 11 SR-IOV – Configuration and Use Case Examples
- 12 NPAR – Configuration and Use Case Example
- 13 Tunneling Configuration Examples
- 14 RoCE – Configuration and Use Case Examples
- 15 DCBX – Data Center Bridging
- 16 DPDK – Configuration and Use Case Examples
- Revision History
Broadcom NetXtreme-E-UG304-2CS
74
NetXtreme-E User Guide User Guide for Dell Platforms
9.3.1 Operational Link Speed
This option configures the link speed used by the OS driver and firmware. This setting is overridden by the driver setting in
the OS present state.
9.3.2 Firmware Link Speed
This option configures the link speed used by the firmware when the device is in D3.
9.3.3 Auto-Negotiation Protocol
This is the supported auto-negotiation protocol used to negotiate the link speed with the link partner. This option must match
the AN protocol setting in the link partner port. The Broadcom NetXtreme-E NIC supports the following auto-negotiation
protocols: IEEE 802.3by, 25G/50G consortiums and 25G/50G BAM. By default, this option is set to IEEE 802.3by +
Consortium and Media Auto Detect enabled.
Link speed and flow control/pause must be configured in the driver in the host OS.
9.3.4 Windows Driver Settings
To access the Windows driver settings:
Open Windows Manager→Broadcom NetXtreme E Series adapter→Advanced Properties→Advanced tab
To enable Flow Control/Pause frame AN:
Flow Control = Auto-Negotiation
To enable link speed AN:
Speed and Duplex = Auto-Negotiation
9.3.5 Linux Driver Settings
NOTE: For 10GBASE-T NetXtreme-E network adapters, auto-negotiation must be enabled.
ethtool -s eth0 speed 25000 autoneg off – This command turns off auto-negotiation and forces the link speed to
25 Gb/s.
ethtool -s eth0 autoneg on advertise 0x0 – This command enables auto-negotiation and advertises that the device
supports all speeds: 1G, 10G, 25G (and 40G, 50G if applicable).
The following are supported advertised speeds.
– 0x020 – 1000BASE-T Full
– 0x1000 – 1000BASE-T Full
– 0x80000000 – 25000BASE-CR Full
ethtool -A eth0 autoneg on|off – Use this command to enable/disable pause frame auto-negotiation.
ethtool -a eth0 – Use this command to display the current flow control auto-negotiation setting.