(When the router interface of the Internet cafe is faulty, it needs to be checked and dealt with in time. Before describing the troubleshooting methods for router interface failures, the editor briefly introduces the CE1 interface of the router. The router CE1 interface uses 2M, and one E1 is used as several 64k and its combination, which is CE1. The bandwidth of the transmission line of CE1 is 2048k.)
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