EX9200-40T auto negotiation behavior with 10/100M box

EX9200 auto negotiation behavior with default configuration
When EX9200 is connected to a device which supports only 100M (such as any legacy box), the link will not come up without any auto negotiation configuration

The cause of this issue is because EX9200 works in tri mode auto negotiation.
[working case (config speed explicitly)]

 

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James Palmer

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