On Thu, Oct 17, 2013 at 11:19 AM, Alison Chan <chan7...@kettering.edu>wrote:
> Are there any papers which describe benchmarking bandwidth between > switches in an OpenFlow-controlled network, or a mechanism within the > OF spec to measure bandwidth? Topological discovery is easy enough, > but I want to add weights to the graph edges which will be bandwidths. > Do you want the *reported* bandwidth, or the actual measured (currently) available bandwidth? Reported bandwidth can come from the usual places - SNMP, etc. - and available bandwidth can be had using existing methods. The fact that the switch is OpenFlow doesn't really impact your ability to do available bandwidth estimations, other than the fact that per-hop test tools will get screwed by the lack of end-to-end TTL decrement support in the stack (even on switches that support and expose this, most controllers don't use it). -- Nick
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