Configure 1Gbps Mode on SFP+ Interfaces
The eight SFP+ ports, 65 to 72 are dual-speed capable ports and can provide 1Gbps connectivity when used with the supported transceivers and configured for 1Gbps operation from the SEFOS CLI.
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To configure a 1G-MMF link, use the supported 10G/1G SFP+ transceiver (PN x2129a). The speed must be changed to 1G on the appropriate port (see example below).
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To configure a 1G-Cu (RJ45) link, use the supported SFP transceiver (PN x2123a), which provides a RJ45 interface. This is a 1G-only transceiver and the speed must be changed to 1G on the appropriate port (see the following example).
 | Caution - When using 1Gbps mode, autonegotiation must be disabled on the link-partner. The link-partner must be configured in 1Gbps-Forced-FDX mode. |
- Obtain the SEFOS prompt.
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Type these commands to configure the speed to 1Gbps.
For example, to configure ports 71 and 72:
SEFOS# config terminal SEFOS(config)# interface range extreme-ethernet 0/71-72 SEFOS(config-if)# shutdown SEFOS(config-if)# speed 1000 SEFOS(config-if)# no shutdown SEFOS(config-if)# end SEFOS# write startup-config