mixed-rate link enable

Function

The mixed-rate link enable command adds interfaces with different rates to the same Eth-Trunk.

The undo mixed-rate link enable command disables interfaces with different rates from being added to the same Eth-Trunk.

By default, interfaces with different rates are not allowed to be added to the same Eth-Trunk.

Format

mixed-rate link enable

undo mixed-rate link enable

Parameters

None

Views

Eth-Trunk interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

You can run the mixed-rate link enable command to add interfaces with different rates to the same Eth-Trunk. If a member interface of an Eth-Trunk is a GE interface and the transmission bandwidth needs to be increased, you can enable this function when the GE interface needs to be changed to an XGE interface. During switching, add the XGE interface to the Eth-Trunk and then delete the GE interface. In this way, the service interruption time during the switching process can be reduced.

Precautions

In LACP mode, if the peer device does not support this function, interfaces with different rates cannot be successfully added to the same Eth-Trunk even if the local device has the function enabled.
In LACP mode, when Eth-Trunk negotiation succeeds, modifying the configuration of this command triggers a renegotiation, which can cause an LACP flap.
In manual mode, if the peer device allows only interfaces with the same rate to be added to the same Eth-Trunk, traffic forwarded by all interfaces of the local device can be received only by the interfaces with the same rate, but not by the other interfaces.
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 calculation and the bandwidth of the Eth-Trunk is 2G.
When the undo mixed-rate link enable command is executed, ensure that the Eth-Trunk does not contain member interfaces with different rates.

Example

# Set the Eth-Trunk 2 to allow interfaces with different rates adding.

<HUAWEI> system-view
[HUAWEI] interface Eth-Trunk 2
[HUAWEI-Eth-Trunk2] mixed-rate link enable