A、数据封装协议不一致
B、时钟速率设置不一致
C、没有配置路由协议
D、物理端口故障
更多“端口查看简述Serial0 is up，line protocol is down这些端口的状态是什么原因造成的（）”相关的问题
A、Serial0/1 is up, line protocol is down B、Serial0/1 is down, line protocol is down C、Serial0/1 is up, line protocol is up D、Serial0/1 is administratively down, line protocol is down
A、A.Serial0/1 is up, line protocol is down B、B.Serial0/1 is down, line protocol is down C、C.Serial0/1 is up, line protocol is up D、D.Serial0/1 is administratively down, line protocol is down
A、Physica llink is Down B、Administratively down C、Serial0 is up，lineprotocolisdown D、Physica llink is Up
A、Serial 0 is up, line protocol is up B、Serial 0 is up, line protocol is down C、Serial 0 is down, line protocol is down D、Serial 0 is down, line protocol is up E、Serial 0 is administratively down, line protocol is down F、Serial 0 is administratively down, line protocol is up
A、A.在全局模式配置：firewall 1 serial0 in B、B.在全局模式配置：access-group 1 serial0 out C、C.在Serial0的接口模式配置：access-group 1 in D、D.在Serial0的接口模式配置：access-group 1 out E、E.在Serial0的接口模式配置：ip access-group 1 in F、F.在Serial0的接口模式配置：ip access-group 1 out
A、R4（config-if）#ipv6 router：：/0 serial0/0/1 B、R4（config）#ipv6 router：：/0 serial0/0/1 C、R4（config）#ipv6 router：：serial0/0/1
A、Manchester的串行链路的地址为10.1.1.1 B、Manchester的串行链路的地址为10.1.1.2 C、London路由器是CISCO2610 D、London路由器是CISCO2611 E、路由器Manchester的Serial0/0端口收到CDP信息 F、路由器London的Serial0/0端口收到CDP信息
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