debug serial interface命令是直接与路由器接口和传输介质类型相关的调试命令。在下面的示例中,串行接口采用HDLC封装。端到端的HDLC保持活跃的报文每10秒钟交换一次。这表明链路操作正常并且第二层工作正常。show interface serial0命令表明线路协议正常启动。使用 undebug all命令关闭所有的调试。
YH-Router#debug serial interface Serial network interface debugging is on YH-Router# Jun 1 21:54:55 PDT:Serial0: HDLC myseq 171093, mineseen 171093*, yourseen 1256540,line up Jun 1 21:55:05 PDT:Serial0: HDLC myseq 171094, mineseen 171094*, yourseen 1256541,line up Jun 1 21:54:15 PDT:Serial0: HDLC myseq 171095, mineseen 171095*, yourseen 1256542,line up YH-Router#undebug all All possible debugging has been turned off
YH-Router#debug ip rip events RIP event debugging is on YH-Router# NOV 27 13:55:45 PST: RIP: sending v1 0update to 255.255.255.255 via TokenRing1/0 (165.48.65.136) NOV 27 13:55:45 PST: RIP: Update contains 25 routes NOV 27 13:55:45 PST: RIP: Update queued NOV 27 13:55:45 PST: RIP: Update contains 6 routes NOV 27 13:55:45 PST: RIP: Update queued NOV 27 13:55:45 PST: RIP: Update sent via TokenRing1/0 ...... YH-Router#undeb all All possible debugging has been turned off