[e2e] Losses unrelated to congestion on wired networks

[=?gb2312?q?Jing=20Shen?=]

just got some.

To one of port monitored ( Cisco4006, 10/100Mbps
interface working at 10Mbps full duplex),
in past 7 days we have the following statistics:

Port Bandwidth utilization:
Max Recv bit rate: 159075.33bps
Min Recv bit rate: 3563.3bps
Max Trans Bit rate: 3971732.25bps
Min Trans Bit rate: 543255bps

Packet loss rate:

min: 0%
max: 0.38%
average: 0.06%

as the measurement is still going on, we have not do
more analysis on those raw data. Also, the above
measurement is  based on  RTT measurement every 20sec
by fping 20 packets to remote end from measurement
station. The packet size we use is 56bytes. To current
situation, the packet loss rate from measurement
station to access router is kept to 0%.

simple graph:

Server-- Cisco6500-- cisco4006---------vigor2300--user
                                 ^
                                 |
                               fiber 
|<----------- RTT ---------------------->|

Anyway, we are trying to modify our software to
meausure directly from access router.

jing shen

 --- Panos Gevros <Panos.Gevros at cl.cam.ac.uk>
µÄÕýÎÄ£º> Jing-Shen,
> 
> do you have any utilisation statistics that go with
> this packet loss rate 
> (min/max/avg/stddev)
> 
> Thanks
> Panos
> 
> =?gb2312?q?Jing=20Shen?= typed :
>  | I'm now working on some implementation of network
>  |monitoring for SLA.=20
>  |
>  |  The monitoring of leased line service in past
> months
>  |shows that, the packet loss rate is as low as less
>  |than 0.5% in our situation( 10Mbps optical line
>  |connecting routers). The reason for this is
> possibly
>  |for bad working condition of optic convertor or
>  |router's buffer outage.
> 
> 
> 
>  | --- Saad Biaz <biazsaa at eng.auburn.edu>
> =B5=C4=D5=FD=CE=C4=A3=BA>
>  |Greetings!
>  |>=20
>  |> Does anyone have references/links to losses
>  |> unrelated to congestion that
>  |> happen on WIRED (optical included)  networks?
>  |>=20
>  |> Packet loss rates numbers would be most welcome.
>  |>=20
>  |>=20
>  |> I will highly appreciate any help.
>  |>=20
>  |> Thank you, Saad-
>  |>=20
>  |> Saad Biaz
>  |> Auburn University
>  |> =20
>  |
> 
>
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