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Huawei Server Maintenance Manual 09

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
NIC Bonding

NIC Bonding


Server high availability (HA) is essential for an enterprise-level IT environment. Network connection HA of servers is especially important. The network interface card (NIC) bonding technology helps to ensure network connection HA and enhance network performance for servers.

NIC bonding provides two functions:


Two or more NICs of the Linux operating system (OS) are bonded to virtually form one NIC. The NIC is regarded as an independent Ethernet interface device and assigned one Media Access Control (MAC) address and one IP address. If the active NIC fails, the standby NIC becomes active and provides network services. This prevents a single point of failure (SPOF).

The host where NICs are bonded is called server, and NIC bonding operations are performed on the server.

Load balancing

Load balancing aims to provide network HA and increased bandwidth. Nowadays, servers are expected to provide more services, and therefore the servers are more heavily loaded. In addition, higher requirements are put on network bandwidth and HA. If more NICs are added to meet the requirements, high costs and difficult management are induced. Load balancing between NICs through NIC bonding can be used to easily provide high reliability and bandwidth.

To balance load between NICs, you need to perform NIC bonding operations on the server and switch.

Configuration operations on the server vary according to OS types.


Figure 4-1 shows the load balancing networking.

Figure 4-1 Load balancing networking

The networking is described as follows:

  • Two network ports on the server connect to the S5328C switch through network cables.
  • The two network ports are aggregated at the S5328C switch.
  • At least two clients are connected to the S5328C switch at the other end for NIC bonding testing.

Identifying Network Ports

Use one of the following methods to identify network ports before bonding NICs:

  1. Method 1
    1. Log in to the server OS and query the MAC address of each network port.
    2. Compare the MAC addresses obtained in the preceding step and the MAC addresses of the service network ports labeled on the server chassis. Starting from the first service network port, add 1 to the MAC address of each service network port in sequence.
  2. Method 2
    1. Log in to the server OS and set an IP address for each network port.
    2. Connect the network ports to the network in sequence and run ping to determine the IP address of each physical network port.
Updated: 2019-02-25

Document ID: EDOC1000041338

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