How to configure an H3C aggregation switch

H3C aggregation switches can be configured for static or dynamic link aggregation using Bridge-Aggregation interfaces, allowing multiple physical ports to operate as a single logical link for increased bandwidth and redundancy.Step 1: Enter System ViewTo configure an H3C switch, first access the switch via console or Telnet and enter system-view mode:CodeCopy system-view This mode allows you to make configuration changes to interfaces and aggregation groups .Step 2: Create a Bridge-Aggregation InterfaceDeclare a link aggregation group using the interface Bridge-Aggregation command:CodeCopy interface Bridge-Aggregation 1 This creates the first aggregation group. If additional groups are needed, increment the number accordingly .Step 3: Set Aggregation ModeChoose between dynamic (LACP) or static aggregation:CodeCopy[H3C-Bridge-Aggregation1] link-aggregation mode dynamic Dynamic mode uses LACP to negotiate link aggregation with the peer device.Static mode aggregates ports without negotiation .Step 4: Assign Physical Ports to the Aggregation GroupEnter each physical interface and add it to the aggregation group:CodeCopy interface GigabitEthernet 1/0/1[H3C-GigabitEthernet1/0/1] port link-aggregation group 1 Repeat for all ports to be included (up to 8 ports per group for most H3C switches), .Step 5: Configure VLANs and Trunking (Layer 2)If the aggregation is Layer 2, configure the Bridge-Aggregation interface as a trunk and assign VLANs:CodeCopy interface Bridge-Aggregation 1[H3C-Bridge-Aggregation1] port link-type trunk[H3C-Bridge-Aggregation1] port trunk permit vlan 10 20 This allows VLAN 10 and VLAN 20 traffic to pass through the aggregated link .Step 6: Configure Layer 3 Aggregation (Optional)For Layer 3 aggregation, switch the interface to Layer 3 mode and assign an IP address:CodeCopy interface Bridge-Aggregation 1[H3C-Bridge-Aggregation1] undo portswitch[H3C-Bridge-Aggregation1] ip address 192.168.1.1 255.255.255.0 This enables routing capabilities on the aggregated interface .Step 7: Verify ConfigurationUse the following commands to check the status of the aggregation group and member ports:CodeCopy display link-aggregation summary display this Selected ports are active members of the aggregation group.Standby ports are ready but not currently forwarding traffic in dynamic mode .Best PracticesEnsure all member ports have the same speed, duplex, and link type before aggregation .Remove any existing VLAN or port isolation configurations before adding ports to the aggregation group .Use consistent aggregation settings on both ends of the link to avoid mismatches and traffic issues . This configuration provides increased bandwidth, redundancy, and simplified management for H3C switches in both Layer 2 and Layer 3 environments.