Can I have a 10G SFP in port 1 and a 1G SFP port 2 on a 5520?

[Peter010101]

Can I have a 10G SFP in port 1 and a 1G SFP port 2 on a 5520?

Would that work or if I had a 1g SFP in port 1 and a 10G SFP in port 2 would the speed throttle down to 1g on port 2? 

[Leo Laohoo]

Won't work because you cannot etherchannel two different speeds.

[Peter010101]

I don't want to use an etherchannel. My existing 10g is a trunk and I want to add the 1g going to a different switch.

[Scott Fella]

The answer is no.


It is recommended to have all ports as either 10 G or 1 G. In case they are different, port 1 SFP determines the mode of operation and functionality on the other SFPs may not work.

https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-1/5520-WLC-DG/b_Cisco-5520-WLC-deployment-guide.html#concept_710F89B1D0A54FE19F977352A2CB4AE2