Aruba Networks Mobility Access Switch S1500-48P

Link aggregation groups (LAGs): Ports may be bonded together to increase uplink bandwidth and eliminate the need for primary/backup links which are typically found in spanning tree topologies.
PoE priority: ArubaOS PoE priority classifies attached PoE devices with a priority level, ensuring no loss of power for business-critical devices like APs, security cameras and red phones.
Hot Standby Link (HSL): Provides a link failover mechanism without configuring and running a spanning-tree protocol. A port or group of ports may be configured as redundant for another group of ports.