My ISP provides a SFP+ GPON ONT that I currently use with my CSS326-24G-2S+ switch.
This link is stable and working, however is only negotiating a 1gb link.
The SFP module does have the ability to negotiate the full GPON spec bandwidth of 2.488gbps rx/1.244gbps tx.
My ISP is now offering 1.5gbps but I cannot upgrade due to the negotiation of the current speed. Is there any way I can force a 2.5gbps link or can a firmware update be provided?