Huawei aggregation and core switches can be configured for management, VLANs, and link aggregation using Eth-Trunk with manual or LACP modes, ensuring high bandwidth, redundancy, and load balancing.

Management and Initial Deployment

For large-scale deployments, aggregation and access switches can be managed via iMaster NCE-Campus using Zero Touch Provisioning (ZTP) or manual methods. Three deployment modes are available: importing device/link info via templates, manually adding devices with auto-negotiation, or manually adding devices with Eth-Trunk configured on the controller . Core switch configuration for management includes:

• Setting a management subnet (e.g., VLAN 4080, IP 192.168.100.254/24)
• Enabling DHCP server on the gateway interface for access switches
• Configuring static management IP ranges (e.g., 192.168.100.1–192.168.100.100)
• Enabling controller address auto-negotiation for seamless integration with iMaster NCE-Campus This ensures that access switches can obtain IP addresses dynamically during first-time plug-and-play deployment.

VLAN and Subnet Configuration

• Create VLANs for different network segments (e.g., VLAN10, VLAN20)
• Assign interfaces to VLANs before adding them to Eth-Trunks to prevent broadcast storms
• Configure the core switch as the root device for management VLAN auto-negotiation

Link Aggregation (Eth-Trunk)

Huawei switches support manual and LACP modes for link aggregation: Manual Mode:

• Create an Eth-Trunk and add member interfaces manually
• All active links forward data and perform load balancing
• Ensure member interfaces on both ends have the same Ethernet type, rate, duplex, and flow control LACP Mode:
• Enables dynamic negotiation of aggregated links using Link Aggregation Control Protocol (LACP)
• Only active links connected to the correct remote device forward traffic
• Provides redundancy: if an active link fails, traffic is switched to backup links
• Configure system priority and active interface thresholds to control which links are active and ensure guaranteed bandwidth Example Steps for LACP Eth-Trunk:

1. Create Eth-Trunk1 on SwitchA and SwitchB
2. Add member interfaces to Eth-Trunk1
3. Configure VLANs to pass through the Eth-Trunk (e.g., VLAN10, VLAN20)
4. Set system priority (e.g., 100) and active interface upper threshold (e.g., 2)
5. Configure interface priority to select active links

Best Practices

• Always exit interfaces from default VLAN1 or shut them down before joining Eth-Trunk
• Ensure matching configurations on both ends of the Eth-Trunk to avoid communication issues
• Use static or dynamic IP assignment for management depending on deployment scale
• Monitor Eth-Trunk status and clear LACPDU statistics periodically to maintain reliability By following these steps, Huawei aggregation and core switches can be configured for high-performance, reliable, and scalable campus networks with proper management, VLAN segmentation, and link aggregation.