Thank Cuong for the reply. I need to get back to you regarding the SFP's, I just wanted to know whether it was possible to link the two switches with the SFP ports. We're almost sure it shouldn't be a problem, so we called Dell locally and the consultant said it was not possible to cascade the switches in that manner, we needed some verification.
It seems like the switches aren't working in this configuration. The switches are using the Dell SFP's, we're using port 24 on both switches, we've eliminated any network loops. The seem to connect fine for about 2-3 hours than they lose connection to each other.
Can you verify for us that stacking the switches in this manner is a supported configuration?
I'm not sure I understand what you mean by stacking. The 27xx does not support stacking in the sense of stacking feature supported in 33xx or 34xx. When we refer to stacking in switching technology we are talking about stacking two switches so that the ports on the switch can be managed as if they were from the same switch. This requires coordination between the two switches so that you can do things such as creating a LAG (link aggregation group) which contain ports from both switches.
If you are referring to this type of stacking then the 27xx does not support this feature. If this is not what you mean please explain your definition of the term stacking.
On my test switches I connected two 2724 using the SFP port (port 24 only - and no copper in either port 23 or 24). I left this up overnight without any error.
Can you provide me more info please? Such as any configuration you have for the ports on the switches (did you setup auto-negotiation on the port for example). When you say that the switches lose connection what do you mean exactly? Is it: