So I have a SG350X-24P switch as my home network core switch.
I am now planning on getting another SG350X-24P (I know it's EOL, but I can have it for a good deal) second hand to add to my existing SG350X-24P switch and create a two switch stack as I have run out of ports. Thus I have a few questions around expected stack behaviour.
I am familiar with the general concept of stacking like doing LACP across stack members or the active member being the switch you interface with, just with other competing vendors than Cisco, and thus I don't know what to expect from a Cisco front.
My questions around stacking with the SG350X Switch series are as follows:
1) If two switches are connected together in a stack without setting the unit ID, does the switch with the lowest MAC address become the stack member 1. Is this also used to determine what switch will become the active member?
2) If the active member loses power and causes the standby member to become the new active member, what happens when the previous active member regains power and boots up?
Does it become the new standby member, does it go into a shutdown state with all ports disabled or does it become the active member again with the current active member transitioning back to the standby member?
3) In the event of the failure of the active member, what kind of network/traffic disruption (if any) would one expect through the switch stack, assuming the data between two physical ports on the same VLAN (say a server and a client) were on the previous standby member switch, now the active member?
4) If all stack links fail between a two switch stack, I presume this would cause a split brain scenario where the current active member would remain active and the standby member would also become active thinking the other switch had gone down. Does the SG350X series support any alternate communication methods (say over a normal cat5e cable) should all stacking links fail in the very unlikely scenario.
5) Does the SG350X series support a rolling reboot during firmware upgrade. (Other vendors I've used, you can upgrade the firmware on the active member and reboot, and then once it come back up and joined the stack, do the same for the remaining units; minimizing downtime to end users.
6) When using SFP+ DAC cables as stacking cables between the SG350X series of switches, do they need to be any specific type, or will any third party compatible DAC cable work. I am talking about working in the literal sense, not about being officially supported or anything.
Regards: Elliott.
