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Switches Directly Connected Through Link Aggregation
In Figure 3-13, traffic of services with different priorities is sent to the core network through the UPE and PE-AGG. Eth-Trunk 1 is established to ensure the bandwidth and reliability of the link between the UPE and PE-AGG.
If devices at both ends of the Eth-Trunk support LACP, LACP mode is recommended; otherwise, you must use manual mode.
QoS can be implemented on an Eth-Trunk as a common interface. This allows for traffic shaping, congestion management, and congestion avoidance on outgoing traffic at both ends (UPE and PE-AGG) of Eth-Trunk 1, ensuring that high-priority packets are sent promptly.