04-24-2013 07:25 PM - edited 03-07-2019 01:01 PM
Guys,
I see many crc errors on the interface, how will I face and resolve this issue? Is there any initial fault isolation that I must do? Sometimes crc errors occur on the GigE interface. Thanks.
FastEthernet0/13 is up, line protocol is up
Hardware is Fast Ethernet, address is 0004.4d27.66cd (bia 0004.4d27.66cd)
Description: EDL-P-Box-NO-4
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 250/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Auto-duplex (Full), Auto Speed (100), 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 18:52:43, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 12000 bits/sec, 6 packets/sec
5 minute output rate 24000 bits/sec, 6 packets/sec
14488019 packets input, 2783320210 bytes
Received 345346 broadcasts, 0 runts, 0 giants, 0 throttles
261028 input errors, 259429 CRC, 1599 frame, 0 overrun, 0 ignored
0 watchdog, 84207 multicast
0 input packets with dribble condition detected
19658279 packets output, 3529106068 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Solved! Go to Solution.
04-25-2013 09:38 PM
Not sure.
CRC, as what Inayath is saying, is a layer 1 issue. Happens when your layer 1 is "dirty". In your case, it's caused by a faulty cable. If you have switches that I've mentioned, then you can run a test called TDR.
04-25-2013 10:42 PM
We have these on our transmission facilities but its OTDR (Optical). Also some of our Field Engineers use fluke networks cable analyzer.
04-25-2013 11:30 PM
OTDR is fibre optic. Get your FE to do a TDR to determine where the faulty pair is located and replace if found.
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