View aggregation port information on H3C switches

H3C switch port aggregation combines multiple physical ports into a single logical link to increase bandwidth, provide redundancy, and simplify network management.Overview of Port AggregationPort aggregation, also known as Ethernet link aggregation, allows multiple physical Ethernet links to be bundled into one aggregate link. This provides:Increased bandwidth: Traffic is distributed across member ports, allowing the aggregate link to exceed the capacity of a single port .Improved reliability: If one member port fails, traffic is automatically switched to other ports in the group .Simplified management: The aggregate link appears as a single logical interface to upper-layer protocols .Each aggregation group has member ports and a logical aggregate interface (e.g., Bridge-Aggregation1) that handles traffic forwarding .Types of AggregationStatic Aggregation: Ports are manually assigned to an aggregation group. The selected state of a port is independent of the peer port, and no negotiation protocol is used .Dynamic Aggregation (LACP): Uses the Link Aggregation Control Protocol (LACP) to automatically negotiate and maintain the aggregation group. Ports can be in selected or standby states, and LACP ensures load balancing and redundancy .Configuration GuidelinesPort Preparation: Before adding a port to an aggregation group, remove conflicting configurations such as VLAN mapping, QinQ, or port isolation .Port Attributes: For static aggregation, all member ports must have the same link type (Trunk, Hybrid, or Access). For dynamic aggregation, ports must also match in rate and duplex mode .VLAN Trunking: Assign VLANs to the aggregate interface to allow multiple VLANs to pass through a single logical link .Master Port Selection: In a manual aggregation group, the port with the lowest number becomes the master port, while others serve as member ports .Example Commands (Layer 2 Trunk Aggregation)TextCopy interface Bridge-Aggregation 1[H3C-Bridge-Aggregation1] port link-type trunk[H3C-Bridge-Aggregation1] port trunk permit vlan 10 20 interface GigabitEthernet1/0/1[H3C-GigabitEthernet1/0/1] port link-aggregation group 1 interface GigabitEthernet1/0/2[H3C-GigabitEthernet1/0/2] port link-aggregation group 1 This configuration creates a trunk aggregate interface carrying VLANs 10 and 20 over two physical ports .High-Speed Interface BreakoutFor QSFP or high-speed interfaces (40G/100G), H3C switches support interface breakout, splitting a single high-speed port into multiple lower-speed logical interfaces (e.g., 10G, 25G, 50G) before aggregation . Commands like using Split_speed allow immediate reconfiguration of the interface into multiple member ports for aggregation purposes .Best PracticesEnsure all member ports are physically connected and free of conflicting configurations.Use LACP for dynamic aggregation to simplify management and provide automatic failover.Monitor the status of member ports using display link-aggregation to verify selected and standby states.For VLAN trunking, configure the aggregate interface rather than individual member ports to avoid misconfigurations.By following these guidelines, H3C switch port aggregation can effectively increase network throughput, provide redundancy, and simplify VLAN management across multiple physical links .