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FAQ-Why Are the NE20E and Peer Device Configured with Different Auto-Negotiation Modes Can Properly Communicate with Each Other and the Interconnected Interfaces Are Up

Publication Date:  2019-04-19 Views:  40 Downloads:  0
Issue Description

An NE20E and an S5720 can communicate with each other properly and the interconnected interfaces are up. However, the auto-negotiation duplex modes at both ends are different.

Solution
This problem is caused by incorrect interface configuration. When the auto-negotiation electrical interface is interconnected with a forcible electrical interface, the negotiation mode of the local interface must be configured to be compatible with the baseline half-duplex capabilities because the auto-negotiation interface cannot receive information including duplex capabilities from the peer device. In this case, error packets or packet loss may occur. You are advised to ensure the same configurations on both ends.

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