I breifly lost connection on one of my routers which connects 2 sites via a leased line. I checked the logs, and it was not power cycled, but looking at the serial interfaces which connect to the leased line I noticed input, crc erros and carrier transitions. Below is the output from a sh int from each router. I'm trying to determine the clock rate on both, but am a little confused. They each have a built-in CSU/DSU, so I'm not sure how clocking works in that case. I can't seem to find a command that tells me what the clock rate is. I almost tried just setting an identical clock rate at each end, but think it will be intrusive and knock out our connection temporarily. Based on the output below, am I on the right trail?
Thank you,
Bill
Harrisburg-1720#sh int ser 0
Serial0 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
Internet address is 10.0.4.2/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 210/255, rxload 72/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 3w6d
Input queue: 0/75/0 (size/max/drops); Total output drops: 6
Queueing strategy: weighted fair
Output queue: 11/1000/64/6 (size/max total/threshold/drops)
Conversations 2/40/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 440000 bits/sec, 135 packets/sec
5 minute output rate 1273000 bits/sec, 171 packets/sec
39524992 packets input, 616171347 bytes, 0 no buffer
Received 280944 broadcasts, 0 runts, 5 giants, 0 throttles
6 input errors, 0 CRC, 1 frame, 0 overrun, 0 ignored, 0 abort
40158932 packets output, 2326620656 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
10 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
Serial0/0/0 is up, line protocol is up
Hardware is GT96K with integrated T1 CSU/DSU
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 67/255, rxload 60/255
Encapsulation FRAME-RELAY, loopback not set
Keepalive set (10 sec)
LMI enq sent 240597, LMI stat recvd 240597, 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
FR SVC disabled, LAPF state down
Broadcast queue 0/64, broadcasts sent/dropped 126802/0, interface broadcasts 86696
Last input 00:00:04, output 00:00:04, output hang never
Last clearing of "show interface" counters 3w6d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 11930
Queueing strategy: weighted fair
Output queue: 0/1000/64/11876 (size/max total/threshold/drops)
Conversations 0/60/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1152 kilobits/sec
5 minute input rate 363000 bits/sec, 103 packets/sec
5 minute output rate 408000 bits/sec, 108 packets/sec
125355003 packets input, 3780863130 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
4 input errors, 4 CRC, 1 frame, 1 overrun, 0 ignored, 1 abort
118815665 packets output, 202934665 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
4 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
Hummelstown2811#
