Is it possible to club together Gigabit Ethernet and SFP ports in an EtherChannel on SUP720.
Depends on whether you want redundancy between the switches or if you feel a single link will not have enough bandwidth for the traffic traversing that link. If its a gig link it takes a lot of traffic to fill that pipe. If the switches are near each and you can runn copper and have spare ports it certainly would not hurt to have an extra link. You were talking etherchannel before so you would already have a redundant link if you are running etherchannel .