Q&A: How to Prevent Packet Loss Caused by a Single-Fiber Fault on an LACP Member Port in Non-Auto Negotiation Mode?

Created: Jun 22, 2018 09:28:46Latest reply: Jun 24, 2018 13:31:41 300 1 0 0

Port1 and Port2 between SwitchA and SwitchB are member ports of an LACP link aggregation group and work in non-auto negotiation mode. A fiber between Port1 on SwitchA and Port1 on SwitchB is broken, for example, the fiber between the Tx end of Port1 on SwitchA and the Rx end of Port1 on SwitchB is broken. Port1 on SwitchA is in Up state and Port1 on SwitchB is in Down state, so Port1 on SwitchA is in LACP selected state and Port1 on SwitchB is in LACP unselected state. As a result, packets transmitted from SwitchA to SwitchB are lost on Port1 on SwitchB.

Figure 5-5 Network diagram
imgDownload?uuid=a7e1fe19ccec4cbbb1dc06f

Use either of the following methods to rectify this fault:

Configure Port1 on SwitchA and Port1 on SwitchB to work in auto-negotiation mode.
Associate EFM OAM with Port1 on SwitchA and Port1 on SwitchB. Run the efm trigger if-down command in the interface view. When the status of Port1 on SwitchA is Down, Port1 on SwitchB is in EFM Down state.

x
convention：

Helpful (0) Favorite(0) Report

wissal

MVE Created Jun 24, 2018 13:31:41

well described doc. thanks

x
convention：

Telecommunications%20engineer%2C%20currently%20senior%20project%20manager%20at%20an%20operator%2C%20partner%20of%20Huawei%2C%20in%20the%20radio%20access%20network%20department%2C%20for%2020%20years%20I%20managed%20several%20types%20of%20projects%2C%20for%20the%20different%20nodes%20of%20the%20network.

Comment

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:

Politically sensitive content
Content concerning pornography, gambling, and drug abuse
Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy

Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " Privacy."

Enterprise

Consumer

Corporate

Carriers

Q&A: How to Prevent Packet Loss Caused by a Single-Fiber Fault on an LACP Member Port in Non-Auto Negotiation Mode?

Third Party’s Trade Secret