From: James Ventre (messageboard@ventrefamily.com)
Date: Tue Apr 12 2005 - 08:33:20 GMT-3
a few weeks ago I tested a 3550-48.
c3550-i9q3l2-mz.121-19.EA1c.bin
SmartBits hanging off each fiber interfaces (2 total) - trunking to the
SmartBits (on both interfaces). The 3550 was doing inter-vlan routing.
I was able to get 1Gbps (full duplex) without any packet loss for the
duration of the test which was 120 seconds.
James
Wayne Bellward wrote:
>Hi All,
>
>I have two 3550EMI's connected via a 10Mb Full duplex crossover, the
>link is a 802.1q trunk and I only have about four VLANS running. When
>I do an FTP of a 10Mb binary file between two hosts one on each switch
>in different VLANS I get file transfer speeds of about 50KBs. If I
>put the hosts on the same 3550 I get transfer speeds of about 85KBs,
>CEF is enabled but either way I would expect to get transfer speeds
>much greater than those I am getting.
>
>The 3550 has a 8.8Gbps switch fabric and a throughput of 4.4Gbps can
>anyone explain to me why this is happening? I don't think there is a
>problem with the switches or the hosts but get the impression I am
>missing a fundamental aspect of switching.
>
>Many Thanks,
>
>Wayne
>
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