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input eroors.

two site connected with E1.

My question is in Remote site,with only 262 packets input,how can it have a 4325 input packets error.What is the problem?What should I deal with it?

Remote site using show command :

serial0/1 is up, line protocol is up

Hardware is PowerQUICC Serial

Internet address is

MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,

reliability 182/255, txload 1/255, rxload 1/255

Encapsulation HDLC, loopback not set

Keepalive set (10 sec)

Last input 00:00:04, output 00:00:05, output hang never

Last clearing of "show interface" counters 00:15:19

Input queue: 0/75/0 (size/max/drops); Total output drops: 0

Queueing strategy: weighted fair

Output queue: 0/1000/64/0 (size/max total/threshold/drops)

Conversations 0/2/256 (active/max active/max total)

Reserved Conversations 0/0 (allocated/max allocated)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

<font color=red> 262 packets input </font>, 206434 bytes, 0 no buffer

Received 63 broadcasts, 0 runts, 1 giants, 0 throttles

!!! 4325 input errors, 651 CRC, 3365 frame, 0 overrun, 0 ignored, 309 abort

305 packets output, 210810 bytes, 0 underruns

0 output errors, 0 collisions, 10 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

DCD=up DSR=up DTR=up RTS=up CTS=up

Central site using show command:

Serial3/0/2 is up line protocol is up

Interface DTE, V35, invert t-clock set, detect dsr_dtr set

nrzi-encoding not set, idle-mark not set, loopback not set

Description : to-shi-ju

The Maximum Transmit Unit is 1500, The keepalive is 10(sec)

Internet Address is

Encapsulation HDLC, keepalive set (10 sec)

Queueing strategy: FIFO

Output queue: (size/max/drops) 0/75/0

5 minutes input rate 8 bytes/sec, 0 packets/sec

5 minutes output rate 2 bytes/sec, 0 packets/sec

13174 packets input, 1335127 bytes

289 input errors, 7 CRC

269 frames, 0 overruns, 13 aborts, 0 giants

13160 packets output, 1332310 bytes

0 output errors, 0 underruns



Re: input eroors.

packets input = Total number of error-free packets received by the system

input errors = Total number of no buffer, runts, giants, CRCs, frame, overrun, ignored, and abort counts. Other input-related errors can also increment the count, so that this sum might not balance with the other counts.

I suggest you refer to the Cisco Command Reference for information on these outputs: (They are very good)

These errors could be due to any of the above mentioned problems. Check your configurations if it matches with your provider's. Also check the line for any errors. A bit error rate test (BERT) would tell you if the line is good or noisy.

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