Load balancing principle of Eth-Trunk member interfaces on CE switches

An Eth-Trunk has 16 timeslots for sending packets at each interval. Eth-Trunk member interfaces use the 16 timeslots to send packets in sequence.

When the number of Eth-Trunk member interfaces is the nth power of 2, load balancing can be made more even. For example, if the number of Eth-Trunk member interfaces is 2, 4, or 8 (which is divisible by 16), the timeslot of the packets sent by each interface is an integer, making load balancing even. If it is not the nth power of 2 (for example, 3), a member interface gets 6 times for sending packets from 16 timeslots, while the other two only get 5 times. In this way, load balancing is not even.

Therefore, you are advised to set the number of Eth-Trunk member interfaces to the nth power of 2, ensuring even load balancing.

Scroll to top