Add a link aggregation group

  1. Go to Network > Interfaces, click Add interface, and select Add LAG.
  2. Enter a name.
  3. Click Add new item and select interfaces.
    Note Only unbound static physical interfaces can be members of the LAG. Interfaces that have been configured for PPPoE, cellular WAN or WLAN cannot participate in the LAG.
  4. Select a mode.
    Active–Backup This mode provides link failover. One member link remains active while the others remain in standby mode. When the active link fails, the standby link becomes active.
    802.3ad (LACP) This mode provides failover and load balancing. In this mode, traffic is distributed among all links. Observe the following requirements:
    • LACP must be enabled at both ends of the link.
    • All of the member interfaces must be of the same type and have the same interface speed.
    • All links must be full-duplex.
  5. Select a network zone.
  6. Specify IP assignment details.
  7. Optional Specify advanced settings.
    Interface speed Interface speed for synchronization.
    Note Speed mismatch between the device and third-party routers and switches may result in errors or collisions, disconnection, increased latency, or slow performance.
    MTU MTU (Maximum Transmission Unit) value, in bytes. The MTU is the largest packet size that a network can transmit. Packets larger than the specified value are divided into smaller packets before they are sent.
    Note When networks with differing MTU sizes are interconnected, packets larger than the specified MTU value are fragmented before they are sent.
    Override MSS The maximum segment size is the largest amount of data, in bytes, that a device can receive in a single TCP segment.
    Xmit hash policy For LAGs that use 802.3ad (LACP) mode, assign load sharing across links based on the algorithm applied in the xmit hash policy.
    • Layer2 Generate the hash value using MAC addresses.
    • Layer2+3 Generate the hash value using a combination of layer 2 (MAC address) and layer 3 (IP address) protocol information.
    • Layer3+4 Generate the hash value using transport layer protocol information.
    Primary interface For LAGs that use Active–Backup mode, the interface that acts as the primary interface. This interface remains active as long as it is available. Select Auto to assign this value automatically.
    Use default MAC address Use the default MAC address of the interface. By default, the first port that is included as member port becomes the default MAC address.
    Override default MAC address Override the default MAC address of the interface and enter a new address. On factory reset, the address will be reset to the default MAC address.
  8. Click Save.