When you discover a network switch or network-enabled device, its datalinks are discovered including:
Target Components
LAG Configuration
LAG Membership
Bonding Configuration
IPMP Configuration
IPMP Membership
The datalink layer manages networks that share resources by means VLANs (tagged and untagged VLAN IDs), InfiniBand partitions (default and assigned partition keys), and Fibre Channel zones. Datalinks can also depend on other datalinks to increase throughput or reliability.