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10G link is not becoming active after using 1000T optic on the same port

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Title10G link is not becoming active after using 1000T optic on the same port
Symptoms
10G SFP+ link does not become active if we had used the 1000T optic on the same port before.
Environment
Summit X670G2
1000 Base T optic
EXOS 16.1 and above 
Cause
By default, the 10G fiber ports on EXOS switches have the port setting to auto negotiation off and speed 10000 duplex full. 
If we insert a 1G - 1000 BaseT optic, the following warning is thrown and the speed is auto-corrected for this optic. 
04/07/2004 14:53:06.32 <Warn:HAL.Port.OpticCfgCflct> Slot-1: The configuration for the 1000T optic module is not correct - please configure port 1:9 for auto-negotiation On and speed 1000

04/07/2004 14:53:06.41 <Info:vlan.dbg.info> Slot-1: Port 1:9 was changed to auto negotiation on due to 1000BaseT GBIC.

After this change, the port speed is currently set to auto negotiation on speed 1000. 
If an 10G SFP+ optic is now inserted, the link does not become active with the following warning. 

 
04/07/2004 14:07:41.34 <Info:vlan.dbg.info> Media SF+_SR is inserted into Port 9
04/07/2004 14:07:41.34 <Warn:HAL.Port.OpticCfgCflct> The configuration for the SF+_SR optic module is not correct - please configure port 9 for auto-negotiation Off and speed 10000

The settings has to manually changed to auto negotiation off and speed 10000 for the link to be active. 
Please refer to the article below for more information about this behaviour. 

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


 
Resolution
Work-around: 
Manually change the port setting to auto-negotiation off and speed 10000 using the command below: 

 
configure port <port number> auto off speed 10000 duplex full

CR xos0076625 is created to address this issue where the port speed will be automatically changed to default if the connected 1000T optic is removed from the port. 
 
Additional notes

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