02-11-2009 06:51 AM - edited 03-07-2019 12:30 AM
Hi,
Got some input error on an interface of a gateway. What could be the cause ?
FastEthernet0/0 is up, line protocol is up
Hardware is Gt96k FE, address is 0011.200d.b470 (bia 0011.200d.b470)
Description: Inside Network UL
Internet address is X.X.X.X/29
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 10/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 4d18h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 13678
Queueing strategy: Class-based queueing
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/2/256 (active/max active/max total)
Reserved Conversations 2/2 (allocated/max allocated)
Available Bandwidth 5000 kilobits/sec
5 minute input rate 4089000 bits/sec, 459 packets/sec
5 minute output rate 361000 bits/sec, 241 packets/sec
98512390 packets input, 3678068503 bytes
Received 6910 broadcasts, 0 runts, 0 giants, 0 throttles
7 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
99352772 packets output, 1153391011 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
02-11-2009 09:20 AM
there is only 7 input errors. Does the count keep incrementing? If not, you don't need to worry about it.
Most input error is caused by cabling, NIC or port issue. Does "show interface f0/0 counter error" tell you anything?
02-11-2009 11:00 AM
The input errors are increasing at a rate of 1 or 2 a day. SRST is configure on it and I started losing the gateway for a few second in CUCM.
The command show interface f0/0 counter error does not give any output on a router.
02-12-2009 07:30 AM
Did you check input error to see if it incremented everytime when CUCM lost its gateway?
You might need to pay attention to "output drop", which has a big count.
Capture "show interface" every time after CUCM lose its gateway and compare those "input error" and "output drop" count to see which one is incrementing.
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