Yes in performance mode the 'shared' buffer is used for one port only.

The command 'show platform hardware capacity interface' will give you the port buffers.




On 11/27/2015 8:02 AM, selamat pagi wrote:
Hi,
Question to oversubscription/performance mode on a  C6800-32P10G:

  I understand that in oversubscription mode 2 ports share port buffers.
  e.g port 1 and port 9.
   If port 1 is not used, does port 9 get all the buffers ?
   or
   are half of those buffers still allocated to port 1 ?

Is there a CLI to check the allocated buffer ?
and even usage of buffers for each interface ?

cheers,
  keti



http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6800-series-switches/datasheet-c78-733662.html
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