The 20 10GBASE-T ports, 1 to 20, are triple-speed capable ports and can provide 10 Gbps, 1 Gbps, and 100 Mbps connectivity. The 10GBASE-T ports operate in autonegotiation mode only and support all three speeds by default. For most deployments, the default setting would be optimal, permitting link-partners with any speed to link up. If required, the maximum advertised speed can be changed from the SEFOS CLI.
For example, to configure ports 11 and 12.
SEFOS# SEFOS(config)# interface range extreme-ethernet 0/11-12 SEFOS(config-if)# shutdown SEFOS(config-if)# speed 1000 SEFOS(config-if)# no shutdown SEFOS(config-if)# end SEFOS# write startup-config
For example, to configure ports 1 and 4.
SEFOS# config terminal SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# shutdown SEFOS(config-if)# speed 100 SEFOS(config-if)# no shutdown SEFOS(config-if)# exit SEFOS(config)# interface extreme-ethernet 0/4 SEFOS(config-if)# shutdown SEFOS(config-if)# speed 100 SEFOS(config-if)# no shutdown SEFOS(config-if)# end SEFOS# write startup-config