I've heard similar in the past. However, keep in mind that very few
enterprise networks will ever generate traffic at that level. I've never
seen any network even turn on the utilization lights on the C6k or C5k for
that matter. Too often people weight sheer throughput higher than other
enterprise sensitive items including vendor support/protocol
support/compatibility/stability etc.
Pete
*********** REPLY SEPARATOR ***********
On 7/26/2001 at 3:38 AM 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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