Why Auto-Negotiation cannot be disabled for a 1000BASE-T interface


Applies to

FTBx-88xxx Series

Question

Can the Auto-Negotiation be disabled for a 1000BASE-T interface?

Answer

 It cannot be disabled, as Auto-Negotiation is mandatory for 1000BASE-T interfaces.  This requirement is defined in IEEE standard 802.3, Section 28D.5 Extensions required for Clause40 (1000BASE-T)