Best thing to do if you’re curious is to read the RCF file - they are just the config files for the switch, but remember that in any case they are not negotiable - the whole reason for the dedicated isolated switches for clustering/metrocluster is to ensure the switches operate in a consistent fashion without the need to operate in consideration of the rest of your network.
Do not make any changes to the RCF config - all of our testing is done with RCF configs and you may not understand why we have made decisions we do in it. Your network team should not have access to the cluster switches unless they agree to this.
From NetApp's Knowledge Base "How to install or update the RCF file on a cDOT Cisco Cluster Switch" so I believe RCF files are for both NetApp and Cisco switches.
NetApp Branded Switches. NetApp has Rebranded Broadcom switches to be used as both Cluster and Management switches. The CN1610 is a 24-port switch that is used as a Cluster switch. The CN1601 is a 24-port switch used as a Management switch.
The Broadcom Switches call CDP, LLDP Link Layer Discovery Protocol. So I think the correct answer is Jumbo Frames & CDP.