I got curious here (I'm not very good at all at Cisco related networking stuff), ISL is the Cisco proprietary VLAN protocol (Inter-Switch Link) and its really old. Right? It's deprecated now and not even all Cisco switches supports it.
You set up a 4-switch "ClusterNet" for your temp stuff there, with 2x the redundancy HW-wise, in this unsupported stretch cluster, correct? Why did you chose to use the old ISL?
/M
On 2020-10-13 18:10, Filip Sneppe wrote:
Lastly, maybe not all that important but you don't want to have your cluster switches go down while you are in your stretched 4-node cluster setup. In my unsupported scenario we had 2 switches on each side, 4 in total with ISLs between them. Like I said, this was not a supported setup bit we were confident enough to get the migration done that was without a whole lot of hassle.