The following sections describe some of the important fields of the command output. This section describes how to use the show interfaces serial command to diagnose serial line connectivity problems in a wide area network (WAN) environment. Figure 15-1 shows the output of the show interfaces serial EXEC command for a High-Level Data Link Control (HDLC) serial interface. The output of the show interfaces serial EXEC command displays information specific to serial interfaces. Troubleshooting Using the show interfaces serial Command Conventionsįor more information on document conventions, see the Cisco Technical Tips Conventions. If you are working in a live network, ensure that you understand the potential impact of any command before using it. All of the devices used in this document started with a cleared (default) configuration. The information presented in this document was created from devices in a specific lab environment. This document is not restricted to specific software and hardware versions.
Readers of this document should be knowledgeable of the following definitions.
Troubleshooting Using the show interfaces serial Commandĭetailed Information on the show interfaces serial Command The chapter consists of the following sections: This chapter presents general troubleshooting information and a discussion of tools and techniques for troubleshooting serial connections.
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