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How to configure a port when SR SFP+ optic is plugged into a multi-speed port

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TitleHow to configure a port when SR SFP+ optic is plugged into a multi-speed port
Objective
  • How to configure a port when SR SFP+ optic is plugged into a multi-speed port
Environment
  • EXOS
  • X620 & X670V
  • SR SFP+ Optics
Procedure
  • When SR SFP+ optic is plugged into a multi-speed port on X620 or other switch, Auto negotiation has to be turned off for the port to become active.
configure ports <Port no> auto off speed 10000 duplex full
  • Our SFP+ (Part 10301) modules are ONLY 10G, therefore when autonegotiation is turned on and the transceiver is plugged into the port, the following log is thrown because 10G requires autonegotiation to be turned off.
05/19/2017 10:28:20.46 <Warn:HAL.Port.OpticCfgCflct> The configuration for the SF+_SR optic module is not correct - please configure port 14 for auto-negotiation Off and speed 10000
X670V-48x # show ports 14 configuration no-refresh 
Port Configuration
Port     Virtual    Port  Link  Auto   Speed      Duplex   Flow  Load   Media
         router     State State Neg  Cfg Actual Cfg Actual Cntrl Master Pri Red
================================================================================
14       VR-Default  E      R    ON  1000       FULL                    SF+_SR  
================================================================================
  • ​The link will only become active if the auto-negotiation is turned OFF on that particular port.
X670V-48x # configure ports 14 auto off speed 10000 duplex full
X670V-48x # show ports 14 configuration no-refresh 
Port Configuration
Port     Virtual    Port  Link  Auto   Speed      Duplex   Flow  Load   Media
         router     State State Neg  Cfg Actual Cfg Actual Cntrl Master Pri Red
================================================================================
14       VR-Default  E      A   OFF 10000 10000 FULL FULL   NONE        SF+_SR  
================================================================================

 
Additional notes
  • This is expected/normal behavior because our SR SFP+ modules are ONLY 10G even though the switch port will support 100/1G/10G speeds.
  • By default, an EXOS switch has auto negotiation set to ON for 1G ports and set to OFF for 10G ports.

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