Can an Eth-Trunk be configured as an observing port on CE switches

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An Eth-Trunk can be configured as an observing port, but its member ports cannot.

Other related questions:
Can an Eth-Trunk be configured as a mirrored port on CE switches
An Eth-Trunk can be configured as a mirrored port.
- If an Eth-Trunk is configured as a mirrored port, its member ports cannot be configured as mirrored ports.
- If a member port of an Eth-Trunk is configured as a mirrored port, the Eth-Trunk cannot be configured as a mirrored port.

How can I delete an Eth-Trunk on a CE switch
Before deleting an Eth-Trunk, delete Eth-Trunk member interfaces. For example, Eth-Trunk 2 has two member interfaces: 10GE1/0/1 and 10GE1/0/2. To delete Eth-Trunk 2, perform the following configurations: system-view [~HUAWEI] interface eth-trunk 2 [~HUAWEI-Eth-Trunk2] undo trunkport 10ge 1/0/1 [*HUAWEI-Eth-Trunk2] undo trunkport 10ge 1/0/2 [*HUAWEI-Eth-Trunk2] commit [~HUAWEI-Eth-Trunk2] quit [~HUAWEI] undo interface eth-trunk 2 [*HUAWEI] commit

How to prevent network flapping caused by changes of Eth-Trunk member interfaces on CE switches
The path cost of Eth-Trunks change when Eth-Trunk member interfaces go Up or Down. In this case, STP recalculates the path cost and spanning tree, causing network topology changes and network flapping. You can run the stp [ process process-id ] [ instance instance-id ] cost cost command in the Eth-Trunk interface view to set the path cost of Eth-Trunks to a fixed value. In this way, the changes of Eth-Trunk member interfaces do not affect the path cost, preventing network topology changes. For example, set the path cost of Eth-Trunk 1 to 200. system-view [~HUAWEI] interface eth-trunk 1 [*HUAWEI-Eth-Trunk1] stp cost 200 [*HUAWEI-Eth-Trunk1] commit

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