Although Cormac Hogan already wrote about this I figured I would repeat some of his work. It seems like various folks are hitting this issue where an error is thrown while configuring VSAN: Misconfiguration Detected. The misconfiguration in this case refers to how the physical network has been configured. In order for VSAN to be successfully configured your layer 2 VSAN network will need to be enabled for multicast traffic. (below a screenshot of the error which I borrowed from Cormac… thanks Cormac)
In order to successfully configure VSAN you can do two things, now lets be clear that I am not the networking expert and personally I would always advise to discuss with your networking team what the best option is. Here are your two options:
- Enable IGMP Snooping for your VSAN network (VLAN) and define an IGMP Snooping Querier. Default setting on most Cisco switches is IGMP Snooping enabled but without an IGMP Snooping Querier. In this configuration VSAN will not be able to configure correctly!
- Disable IGMP Snooping for your VSAN network (VLAN). Please note that you can typically disable IGMP Snooping globally and per VLAN, in this case if you want to disable it… disable it on your VLAN!
Please consult your network vendor documentation on how to do this.