Hello guys,
I have one question regarding show interface serial. When we type show interface serial, we will get the output as stated below. The question is what are DCD, DSR, DTR, RTS & CTS ? How this 5 indicators can help us for troubleshooting purposes?
Thank in advance
syamrouter#sh int s1
Serial1 is up, line protocol is up Hardware is HD64570 MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255 Encapsulation FRAME-RELAY IETF, loopback not set, keepalive set (10 sec) LMI enq sent 19075, LMI stat recvd 19074, LMI upd recvd 0, DTE LMI up LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0 LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE Broadcast queue 0/64, broadcasts sent/dropped 49968/0, interface broadcasts 0 Last input 00:00:01, output 00:00:00, output hang never Last clearing of "show interface" counters never Input queue: 1/75/0 (size/max/drops); Total output drops: 0 Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations 0/18/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) 5 minute input rate 16000 bits/sec, 2 packets/sec 5 minute output rate 4000 bits/sec, 2 packets/sec 999755 packets input, 370609737 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 932796 packets output, 265560428 bytes, 0 underruns 0 output errors, 0 collisions, 2 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitionsDCD=up DSR=up DTR=up RTS=up CTS=up
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