Understanding Promiscuous Mode for Aggregated Ethernet Interfaces

You can enable promiscuous mode on aggregated Ethernet interfaces. When promiscuous mode is enabled on a Layer 3 Ethernet interface, all packets received on the interface are sent to the central point or Services Processing Unit (SPU) regardless of the destination MAC address of the packet. If you enable promiscuous mode on an aggregated Ethernet interface, promiscuous mode is then enabled on all member interfaces.