The NPM96x0 supports only 1 Gbps and 10 Gbps port speedsOn an NPM-9610 or an NPM-9650, 10 Mbps or 100 Mbps links to adjacent devices will not achieve link status even though the SFPs are the same for 10 Mbps/100 Mbps/1 Gbps on the NPM86xx.
Below are some messages that show the SFP is supporting 1 Gbps mode:
Jun 10 10:43:00 npm2 kernel: cbsif: port-11: SFP has been inserted. 1 Gig mode.
Jun 10 10:43:12 npm2 kernel: cbsif: port-12: SFP has been inserted. 1 Gig mode.
Jun 10 10:43:18 npm1 kernel: cbsif: port-10: SFP has been inserted. 1 Gig mode.
Jun 10 10:43:34 npm1 kernel: cbsif: port-11: SFP has been inserted. 1 Gig mode.
Jun 10 10:43:37 npm1 kernel: cbsif: port-12: SFP has been inserted. 1 Gig mode.
The NPM-96x0 does not support 10 Mbps or 100 Mbps link speed even though the CLI allows configuration of such speed.
The NPM-96x0 only supports 1 Gbps & 10 Gbps link speeds depending upon SFP/XFP transceiver type.