|
Posted by on August 20, 2006, 8:26 pm
If you were Registered and logged in, you could reply and use other advanced thread options
Gerard Bok wrote:
> On Sun, 20 Aug 2006 08:09:26 GMT, Danny Stone
>
> >I am seeking a means of performing basic 10/100 bit error rate
> >testing using a Win XP laptop w/ integrated NIC. Essentially I am
> >looking for a software application to run on the laptiop that can
> >generate and terminate fixed length (up to 1518 byte) packets of
> >random data content.
> >
> >The purpose is simple 10/100 bit error rate testing.
>
> First of all, if you read through this group's archive, you will
> find that there is no such thing as a 'NIC BERT'.
>
> But for what you want to do: most NIC chipset manufacturers
> supply a test utility that will pull this trick for you.
> (e.g. Realtek: REALDIAG.exe)
Above sounds a fine plan.
If for some reason that does not suit you could as an alternative
consider sending frames and seeing if they arrive correctly.
Ethernet checks for bad frames so all you have to do is to send frames
and count how many arrive.
This clearly does not return the BER directly.
I am also not sure what you expect to see.
Here is a random port on a LAN. Well I know is was a busy one
but no special selection was made regarding error
rate.
sw2#sh int gi 3/22 counters
Port InBytes InUcastPkts InMcastPkts InBcastPkts
Gi3/22 4419807352991 8817575501 206740 44197
Port OutBytes OutUcastPkts OutMcastPkts OutBcastPkts
Gi3/22 1260741405328 4961991888 61575480 35987515
sw2#sh int gi 3/22 counters err
Port CrcAlign-Err Dropped-Bad-Pkts Collisions Symbol-Err
Gi3/22 0 0 0 0
Port Undersize Oversize Fragments Jabbers
Gi3/22 0 0 0 0
Port Single-Col Multi-Col Late-Col Excess-Col
Gi3/22 0 0 0 0
Port Deferred-Col False-Car Carri-Sen Sequence-Err
Gi3/22 0 0 0 0
That's 40,000G bits with no errors of any kind!!!
This is a copper GBE port running at 1000Mbps.
Tools for sending a lot of packets and checking if they
arrive are:-
iperf this is like ttcp but a bit reworked
ttcp
fping.exe http://www.kwakkelflap.com - not too easy to find
hence the reference.
| 
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML site map