On 4/19/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> Hello –
>
>  We are doing testing using the new 3.0 RC1 build but are seeing some
> strange throughput speeds listed :
>
> sending out eth1 eth2
>
> processing file: ********.cap
>
> Actual: 97181 packets (97793242 bytes) sent in 8.10 seconds
>
> Rated: 12061522.2 bps, 92.02 Mbps/sec, 11986.01 pps

[snip]

> What's odd about this is that the traffic is flowing through a device which
> should be limiting it to about 10-11Mbps.

Well assuming you've got 100Mbps or 1000Mbps network cards, this isn't
at all surprising.  Tcpreplay isn't verifying that your device
actually forward the packets; just that the packet can be sent out on
the wire.  Of course if you have a 10Mbps card and it's reporting
doing about 10x that, then yes something is horribly wrong. :)

> Is there anything that can be adjusted to correct this issue?

Use tomahawk; it verifies that the packet it sends is received on the
other end before sending the next packet.


-- 
Aaron Turner
http://synfin.net/
http://tcpreplay.synfin.net/ - Pcap editing & replay tools for Unix

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