CRC Error found in C2500 router.

Amit Thakkar · ‎02-19-2012

Dear All,

We are monitoring everyday C-2500 router, the CRC and input error are increasing day by day.This are current readings as observed on 18 Feb.

Any Over-come from this please guide us....

C-2500-R1#sh int s0

Serial0 is up, line protocol is up

Hardware is HD64570

Internet address is 192.168.XX.XX/30

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

reliability 255/255, txload 8/255, rxload 55/255

Encapsulation HDLC, loopback not set

Keepalive set (10 sec)

Last input 00:00:16, output 00:00:00, output hang never

Last clearing of "show interface" counters 1w1d

Queueing strategy: fifo

Output queue 0/40, 577878 drops; input queue 0/75, 29 drops

5 minute input rate 449000 bits/sec, 907 packets/sec

5 minute output rate 68000 bits/sec, 5 packets/sec

31866633 packets input, 692108732 bytes, 29 no buffer

Received 89258 broadcasts, 0 runts, 0 giants, 0 throttles

1236 input errors, 818 CRC, 80 frame, 209 overrun, 209 ignored, 250 abort

28696315 packets output, 1815650600 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

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

Readings as observed on 16 Feb

Serial0 is up, line protocol is up
Hardware is HD64570
Internet address is 192.168.XX.XX/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters 6d12h
Queueing strategy: fifo
Output queue 0/40, 393330 drops; input queue 0/75, 17 drops
5 minute input rate 0 bits/sec, 1 packets/sec
5 minute output rate 3000 bits/sec, 2 packets/sec
     21345337 packets input, 2268645157 bytes, 17 no buffer
     Received 65239 broadcasts, 0 runts, 0 giants, 0 throttles
    513 input errors, 487 CRC, 40 frame, 13 overrun, 13 ignored, 138 abort
     19249627 packets output, 1931191630 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
     DCD=up DSR=up DTR=up RTS=up CTS=up

Readings as observed on 15 Feb.

Serial0 is up, line protocol is up
Hardware is HD64570
Internet address is 192.168.XX.XX/30
MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
reliability 255/255, txload 60/255, rxload 17/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters 5d16h
Queueing strategy: fifo
Output queue 0/40, 353430 drops; input queue 0/75, 17 drops
5 minute input rate 137000 bits/sec, 81 packets/sec
5 minute output rate 487000 bits/sec, 76 packets/sec
19088829 packets input, 1751500313 bytes, 17 no buffer
Received 57112 broadcasts, 0 runts, 0 giants, 0 throttles
83 input errors, 59 CRC, 0 frame, 12 overrun, 12 ignored, 10 abort
16955726 packets output, 4261324851 bytes, 0 underruns
   0 output errors, 0 collisions, 0 interface resets
   0 output buffer failures, 0 output buffers swapped out
   0 carrier transitions
   DCD=up DSR=up DTR=up RTS=up CTS=up

paolo bevilacqua · ‎02-19-2012

Complain to the telco.