The 1000BASE-T Small Form-Factor Pluggable (SFP) can support 10/100/1000 speeds only on the Cisco Catalyst 2970, 3560, and 3750 Series switches.
It is also possible to have the port auto-negotiate at a lower speed, or force a slower speed. Issue the show interface capabilities command in order to confirm whether a given GLC-T= supports 10/100 speed on a switch.
Output from the show interface capabilities command can confirm whether a GLC-T= can be run at a lower speed. The output also displays the capabilities of the specified interface, including the configurable features and options.
For example, in order to hardcode the speed of the SFP port to 100Mbps, issue this command:
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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