link aggregation

[Brahim dias]

Sure! Here's the translation:

"I would like to know if it is possible to have 6 or 12 sub-interfaces in one port channel, and why."

[MHM Cisco World]

Port-channel as physical interface you can have as much as you can of subinterface' and it limit by SW vlan tag  if SW vlan support up to 1023 then you can config up to 1023 (except some reserved vlan).

Note:- Some sw support up to 4093 vlan.

MHM

[Brahim dias]

I would like to know if it is possible to have 5, 7, or 9 sub-interfaces in one port channel."

[MHM Cisco World]

Sure no problem at all

MHM

[Joseph W. Doherty]

As far as I know, port-channel interfaces don't have different limitations vs. other interfaces that support subinterfaces.

As to your OP "why", for the same reasons you would use subinterfaces, although I think it much more likely a L3 switch port-channel would be a trunk using SVIs and unsure a L3 switch would even support subinterfaces.

[Joseph W. Doherty]

BTW, you're not confusing port-channel physical interfaces with interface logical subinterfaces?

[Brahim dias]

Okay, thank you for the answer.

I have an additional question. I would like to know if "mode on" is one of the protocols for link aggregation. How is it different from LACP and PAgP? Can it be used with all products?