Planning to have stacking using ethernet port in X440 24P switch,when you say port 25 and 26, does it means its the 23 and 24 port or the 21 and 2 optical port? I supposed port 23 and 24, need some confirmation.
To be clear you have to use the SFP+ ports not the SFP ports. I would recommend looking at this HW installation guide as it will show you how to configure the SummitStack V option.
No the 10G ports are on the front of the switch. The alternate stacking ports only work with the 440-24-10G switches. They should have the SFP+ label under the ports and should be to the right of the main bank of ports.
thanks for the reply Paul, still can't get it. based on the manual you can summitstack-V the x440 using Ethernet via port 25 and 26 (alternative stack port). Are ports 25 and 26 are the ports at the rear of the switch?