Can a 10GE interface on a CE series switch connect to a GE interface

A 10GE optical interface can connect to a GE optical interface in the following situations:

1. The 10GE optical interface has a GE optical module installed. No other configuration is required.
2. The 10GE optical interface has a GE copper transceiver module installed and negotiates with the remote interface to use the same rate and duplex mode.

By default, auto-negotiation is enabled on a 10GE electrical interface. A 10GE electrical interface can connect to a GE electrical interface when they negotiate to use the same rate and duplex mode.

You can run the display interface [ interface-type [ interface-number ] ] command in any view to check the speed and Duplex fields of the local and remote interfaces to determine whether the two interfaces use the same rate and duplex mode.

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