very true.
mishaal wrote:
> How true is this?
> Can anyone throw some light on this report from www.zdlabs.com, 70-80%
> packet loss is rather substantial..hope it's not true!
> thanks
>
> From ZDLAbs :
>
> " In Layer 2 mode, the Black Diamond and Alpine switches forwarded 100%
> of the traffic offered during the test
> without dropping a single packet. This resulted in a throughput of 57.1
> million packets/second for the Black
> Diamond and over 38 million packets/second for the Alpine using 64-byte
> packets. These results represent
> the maximum throughput possible, given the port configurations of the
> switches.
> The Cisco Catalyst 6509 lost over 78% of the packets offered during the
> Layer 2 full mesh test at the 64-byte
> packet size. According to the Catalyst 6509 documentation, the 6509
> switch fabric is capable of forwarding
> 15 million packets/second. This rate is substantially less than the 57.1
> million packets/second offered during
> our test, which explains the large packet loss."
>
> 'The Black Diamond and Alpine switches successfully routed 100% of the
> packets offered (over 5.7 billion
> 64-byte packets) during the test without dropping a single packet. This
> results in a Layer 3 throughput of
> over 95.2 million packets/second for the Black Diamond and over 47.6
> million packets/second for the
> Alpine with 64-byte packets.
> The Layer 3 full mesh results for the Cisco Catalyst 6509 were very
> similar to the Layer 2 results. The
> switch dropped a large number of packets at all block sizes (86.86% with
> 64-byte packets). As in the
> previous tests with Catalyst 6509 we verified that the internal switch
> counters matched the results from
> the SmartFlow application and that there were no packet errors during
> the test."
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