On 09/12/2010 00:05, Phil Bedard wrote:
The Nexus 5548 has 1G support coming sometime in the near future, so if
you are looking to buy further down the line it might be an option. The
older 5010/5020 models have limited 1G support (only on first 16 ports if
I recall correctly)
ObWarning: down-stepping from 10G to 1G on a box often requires lots of
buffers if the traffic is bursty. The N5548 is a cut-thru switch with
small port buffers (680k per port, of which only 160k is allocated for
egress)[1]. If you randomly mix 10G and 1G on a box without careful
consideration on a box like this, you may end up losing lots of data.
In this light, I would suggest that the N5k limits on 1G port availability
aren't as much of a problem as they might seem.
Nick
[1]
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/qa_c67-618605_ps9670_Products_Q_and_A_Item.html#wp9000216
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