Can I Add Interfaces with Different Bandwidths to an Eth-Trunk?

Created: Sep 21, 2019 06:31:27Latest reply: Sep 21, 2019 06:35:16 77 1 0 0
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Can I add interfaces with different bandwidths to an Eth-Trunk? If yes, is the bandwidth of such an aggregated port equal to the sum of all link bandwidths?

  • x
  • convention:

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Popeye_Wang
Admin Created Sep 21, 2019 06:35:16 Helpful(0) Helpful(0)

For S switches:

In earlier versions of V200R011C10, interfaces with different rates cannot join the same Eth-Trunk. In V200R011C10 and later versions, interfaces with different rates can join the same Eth-Trunk by running mixed-rate link enable.

However, when an Eth-Trunk performs load balancing calculation, the interface rate cannot be used as the calculation weight. When interfaces with different rates are added to the same Eth-Trunk, traffic is evenly load-balanced on all the links. Therefore, the bandwidth of member interfaces is calculated by the minimum rate of the member interfaces in the Eth-Trunk. For example, when a GE interface and a 10GE interface are added to the same Eth-Trunk, the rate of the GE interface is used in the calculation and the bandwidth of the Eth-Trunk is 2G.


For CE switches:

In earlier versions of V200R002C50, interfaces with different rates cannot join the same Eth-Trunk.

In V200R011C10 and later versions, interfaces with different rates can join the same Eth-Trunk in LACP mode.

To enable interfaces operating at different rates to forward traffic after they are added to an Eth-Trunk in LACP mode, run the lacp mixed-rate link enable command.

And the distribute-weight command can be used to configure the weight of load balancing for a member interface.


For AR routers:

The member interfaces in an Eth-Trunk interface must be an interface with the same Ethernet type and rate.

  • x
  • convention:

All Answers
Popeye_Wang
Popeye_Wang Admin Created Sep 21, 2019 06:35:16 Helpful(0) Helpful(0)

For S switches:

In earlier versions of V200R011C10, interfaces with different rates cannot join the same Eth-Trunk. In V200R011C10 and later versions, interfaces with different rates can join the same Eth-Trunk by running mixed-rate link enable.

However, when an Eth-Trunk performs load balancing calculation, the interface rate cannot be used as the calculation weight. When interfaces with different rates are added to the same Eth-Trunk, traffic is evenly load-balanced on all the links. Therefore, the bandwidth of member interfaces is calculated by the minimum rate of the member interfaces in the Eth-Trunk. For example, when a GE interface and a 10GE interface are added to the same Eth-Trunk, the rate of the GE interface is used in the calculation and the bandwidth of the Eth-Trunk is 2G.


For CE switches:

In earlier versions of V200R002C50, interfaces with different rates cannot join the same Eth-Trunk.

In V200R011C10 and later versions, interfaces with different rates can join the same Eth-Trunk in LACP mode.

To enable interfaces operating at different rates to forward traffic after they are added to an Eth-Trunk in LACP mode, run the lacp mixed-rate link enable command.

And the distribute-weight command can be used to configure the weight of load balancing for a member interface.


For AR routers:

The member interfaces in an Eth-Trunk interface must be an interface with the same Ethernet type and rate.

  • x
  • convention:

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