Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

threshold for input error

Hi,

Is there a threshold (in percentage) for input error on the ethernet interface. The inut error are generally increasing due to overrun. if the percentage is less than .1% in 24 hours is this a real problem? If someone can point me to a documentation that would be great.

thanks,

Arana

4 REPLIES
Hall of Fame Super Gold

Re: threshold for input error

Is not a problem as the number is still small, anyway is symptom that the router is not working properly.

Which router is that ? What is the interface the packets go out? Which features are enabled ?

New Member

Re: threshold for input error

Hi, this router has a 1M connectivity on the serial and is using CBWFQ. it is a 1721. cpu is less than 20% at all times. The % is in fact much lower than I mentioned in my earlier post.

#show interface fa0

FastEthernet0 is up, line protocol is up

Hardware is PQUICC_FEC, address is 000d.bcc0.3840 (bia 000d.bcc0.3840)

Description: AK_NEt

Internet address is 217.116.2.1/24

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

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

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 1w3d

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

Queueing strategy: fifo

Output queue: 0/40 (size/max)

30 second input rate 109000 bits/sec, 26 packets/sec

30 second output rate 66000 bits/sec, 23 packets/sec

55489952 packets input, 1802339287 bytes

Received 4967488 broadcasts, 0 runts, 0 giants, 0 throttles

95 input errors, 0 CRC, 0 frame, 95 overrun, 0 ignored

0 watchdog

0 input packets with dribble condition detected

49210614 packets output, 577143256 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

Re: threshold for input error

Hi,

input error specially accumulating very fast is a concern. What device and model this is on?

Cisco states the following about input errors of the overrun variety:

Description: The number of times the receiver hardware was unable to hand received data to a hardware buffer.

Common Cause: The input rate of traffic exceeded the receiver's ability to handle the data.

Regards,

Dandy

New Member

Re: threshold for input error

hi, 1721 is the hardware. could this happen when there is a burst of traffic on the LAN but the output queue on the serial does not have enough buffer. I can also see interface reset on the FE interface at times.

How can I verify this?

Thanks,

Arana

368
Views
0
Helpful
4
Replies