On Oct 17, 2013, at 2:19 PM, 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.
hi Alison, no, there are no methods in the OF spec for specifically measuring bandwidth between switches. some OF switches will provide interface types (eg, 1 Gbps, 10 Gbps, etc.) via the ofp_port structure. see ofp_port_features field (with values such as OFPF_100MB_FD, OFPF_1GB_FD, OFPF_10GB_FD, etc.) and also the curr_speed and max_speed fields. the OF specs contain more information about all three of these fields. as for actually measuring the bandwidth, OF switches aren't really any different than regular switches. iperf is commonly used to measure the available bandwidth between two hosts in a network. hope this helps! cheers, Andrew _______________________________________________ openflow-discuss mailing list openflow-discuss@lists.stanford.edu https://mailman.stanford.edu/mailman/listinfo/openflow-discuss
