Users Guide
Table Of Contents
- Revision History
- Table of Contents
- Regulatory and Safety Approvals
- Functional Description
- Network Link and Activity Indication
- Features
- Software and Hardware Features
- Virtualization Features
- VXLAN
- NVGRE/GRE/IP-in-IP/Geneve
- Stateless Offloads
- UDP Fragmentation Offload
- Stateless Transport Tunnel Offload
- Multiqueue Support for OS
- SR-IOV Configuration Support Matrix
- SR-IOV
- Network Partitioning (NPAR)
- RDMA over Converged Ethernet – RoCE
- Supported Combinations
- Installing the Hardware
- Software Packages and Installation
- Windows Driver Advanced Properties and Event Log Messages
- Teaming
- System-level Configuration
- ISCSI Boot
- VXLAN: Configuration and Use Case Examples
- SR-IOV: Configuration and Use Case Examples
- NPAR – Configuration and Use Case Example
- RoCE – Configuration and Use Case Examples
- DCBX – Data Center Bridging
System-level ConfigurationNetXtreme-E User’s Manual
September 4, 2019 • NetXtreme-E-UG103 Page 50
FEC Auto-Negotiation
To enable/disable Link FEC auto-negotiation, the following options can be enabled in the system BIOS HII menu
or in CCM:
• System BIOS->Device Settings->NetXtreme-E NIC->Device Level Configuration
The FEC Auto-negotiation uses two parameters during negotiation exchange: FEC capable and FEC request.
If the NIC advertises it as FEC Auto-negotiation capable, then the FEC settings are driven by the Switch. It can
then link up with a switch which enables FEC or a switch which disables FEC.
Example:
– switch – capable=1, request = 1 then, the link is a FEC link.
– switch – capable= N/A, request= 0 = then the FEC is disabled.
For the NetXtreme-E Ethernet controllers, only Base-R FEC (CL74) is supported. Table 29 shows all supported
configurations with a link partner.
For the NetXtreme-E Ethernet controller, the FEC supports Base-R FEC (CL74) and RS-FEC (CL91/CL108).
Tabl e 3 0 shows all supported configurations with a link partner.
Table 29: Supported FEC Configurations for the BCM5730X/BCM5740X
Local SFEC Setting
Link Partner FEC Setting
Force Speed No
FEC
Force Speed Base-
R FEC CL74 AN (None) AN (None, Base-R)
Force Speed No FEC Link w/ no FEC No link No link No link
Force Speed Base-R FEC CL74 No link Base-R FEC CL74 No link No link
AN (None) No link No link Link w/ no FEC Base-R FEC CL74
AN (None, Base-R) No link No link Base-R FEC CL74 Base-R FEC CL74
Note: For force speed, it must be the same speed setting on both sides.
Note: AN {None} means AN advertises the Base-R capable bit. Set the F0 bit on IEEE802.3by and
the F2 bit on Consortium.
Note: AN {None, Base-R} means the AN advertises the Base-R capable bit and requested bit. Set the
F0 and F1 bits on IEEE802.3by and the F2 and F4 bits on Consortium.