Velocity Reviews - Computer Hardware Reviews

Velocity Reviews > Newsgroups > Computing > Cisco > Interface errors

Reply
Thread Tools

Interface errors

 
 
Alex Turtois
Guest
Posts: n/a
 
      06-22-2006
Hi All,

I'd assume this router has a faulty ethernet interface, what does
experts say?

Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 81000 bits/sec, 71 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
250630345 packets input, 907360465 bytes, 6261 no buffer
Received 230027406 broadcasts, 0 runts, 876 giants, 1431138
throttles
669130 input errors, 218 CRC, 668036 frame, 0 overrun, 0 ignored, 0
abort
0 input packets with dribble condition detected
48160333 packets output, 1326134205 bytes, 0 underruns
685 output errors, 846589 collisions, 2 interface resets
0 babbles, 0 late collision, 90025 deferred
1 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out

Thanks,
Alex

 
Reply With Quote
 
 
 
 
anybody43@hotmail.com
Guest
Posts: n/a
 
      06-23-2006

Alex Turtois wrote:
> I'd assume this router has a faulty ethernet interface, what does
> experts say?
>
> Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> 5 minute input rate 81000 bits/sec, 71 packets/sec
> 5 minute output rate 1000 bits/sec, 2 packets/sec
> 250630345 packets input, 907360465 bytes, 6261 no buffer
> Received 230027406 broadcasts, 0 runts, 876 giants, 1431138
> throttles
> 669130 input errors, 218 CRC, 668036 frame, 0 overrun, 0 ignored, 0
> abort
> 0 input packets with dribble condition detected
> 48160333 packets output, 1326134205 bytes, 0 underruns
> 685 output errors, 846589 collisions, 2 interface resets
> 0 babbles, 0 late collision, 90025 deferred
> 1 lost carrier, 0 no carrier
> 0 output buffer failures, 0 output buffers swapped out


Not necessarily faulty at all.

The most critical thing is to establish when these various
event counters recorded the events. They may be historic
and of no current interest.

Clear counters

Start again.

If the interesting counters record anything please post
the whole of the "sh int" output and the model of the router
"sh ver". Some idea of how busy the interface is supposed
to be would be good.

sh int x
sh ver
sh interface switching
sh interface stats
sh run int x

Assuming that the config on the interface or any connected device
has not been changed then:-


> Output queue 0/40, 0 drops; input queue 0/75, 0 drops

No drops this is good.

> 5 minute input rate 81000 bits/sec, 71 packets/sec
> 5 minute output rate 1000 bits/sec, 2 packets/sec

Low utilisation at present.
> 250630345 packets input, 907360465 bytes, 6261 no buffer

A few no buffer 6 in 250,000 or 1 in 50000.
You may be able to fix this with buffer tuning.

> Received 230027406 broadcasts, 0 runts, 876 giants, 1431138
> throttles

0.5% throttles. This indicates that the router has been
overwhelmed with traffic. You need to make sure that you are
"Fast Switching" i.e. one of Fast/CEF/NetFlow
If you are then you need to reduce the traffic or get a biger router.

> 669130 input errors, 218 CRC, 668036 frame, 0 overrun, 0 ignored, 0
> abort

These may be OK or they may indicate that you have
a duplex missmatch.
> 0 input packets with dribble condition detected
> 48160333 packets output, 1326134205 bytes, 0 underruns
> 685 output errors, 846589 collisions, 2 interface resets
> 0 babbles, 0 late collision, 90025 deferred


Collisions and deferred are OK. A few output errors. It doesn't
say here what they are.

Basically if this is a corporate backbone there is an issue
but if it is for a bit of internet access then it will be OK
as it is but could be improved.

The biggest problem seems to be the routers basic
load capacity. I would retain the Half Duplex to try
to save it from even more traffic.

If the router is a small one and the link is 100M you could
reduce it to 10M which may save the router from being
overwhelmed.

If you want advice on buffer tuning post sh mem (the first few
lines only) and sh buff.

 
Reply With Quote
 
 
 
 
lAwBoY lAwBoY is offline
Junior Member
Join Date: Aug 2006
Posts: 15
 
      08-16-2006
i do understand that if the router fastethernet is set to half duplex
and switch is set to full duplex... it will gerenated alot of collsion and errors,
but as a user, how will it affect the end user....

what i learn it that full duplex is a two way traffic
half duplex is a 1 way traffic

if a full duplex Router device is connected to a half duplex Switch device.. does that mean that if the switch is tranmiting data to the router... then router cannot transmit to the switch???
 
Reply With Quote
 
 
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
PCI interface or USB interface David Wireless Networking 4 09-16-2004 01:01 PM
allow ssh only on outside interface, but telnet on inside interface of router no-one Cisco 0 07-28-2004 04:17 PM
PIX: how to allow 1 host from outside interface to access another host on the inside interface? jonnah Cisco 1 04-21-2004 02:26 PM
static nat between phisical interface and virtual interface on same ethernet Andrea Cisco 0 04-19-2004 09:37 AM
Errors, errors, errors Mark Goldin ASP .Net 2 01-17-2004 08:05 PM



Advertisments