I have two C2960S stacked switches. Does anybody know if there's a way to increase the maximum number of Etherchannels? The max number is 6 but i need around 9-10. Is there any way? (Some licence or something?)
I'm not aware of any way to increase that number because it's based on the platform used. If you need more then the supported six channels on the 2960S you need a newer/bigger switch. The 2960-X supports up to 24 channels, the 3850 up to 128 (based on the config-guide).