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Spanning Tree Protocol: Disable.
For vendor specific information, search for "HA" in the Infoblox Knowledge Base system at https://support.infoblox.com.Trunking: Disable.
If VLAN tagging in enabled on an Infobolox HA appliance, you must enable trunking at the port level.
EtherChannel: Disable.
IGMP Snooping: Disable.
DHCP Snooping: Disable or Enable Trust Interface.
You must disable DHCP Snooping to successfully run DHCP services on the Grid. For more information about DHCP services, see Configuring Infoblox DHCP Services.
Port Channeling: Disable.Speed and Duplex settings: Match these settings on both the Infoblox appliance and switch.
Disable other dynamic and proprietary protocols that might interrupt the forwarding of packets.
By default, a NIOS appliance automatically negotiates the optimal connection speed and transmission type (full or half duplex) on the physical links between its LAN1 or LAN1 (VLAN), HA, and MGMT ports and the Ethernet ports on the connecting switch. If the two appliances fail to auto-negotiate the optimal settings, see as described in Modifying Ethernet Port Settings for steps you can take to resolve the problem.