ExoGENI OpenFlow support Ilya Baldin Paul Ruth RENCI Director for Network Research and Infrastructure

Support for OpenFlow experiments Traditional OVS-based VM topologies –Robust OpenFlow implementation –Multiple versions supported –Works across sites –Works with slice modify – bringing links between OVS instances up and down dynamically Known Problem: LLDP does not propagate properly –Solution1: don’t rely on LLDP –If using FlowVisor, recode LLDP to use a different header –ExoBlog 2

Wide-area SDN “Switch” 3 Tenant’s Compute Hosts (multiple sites) SDN Controlled “Switch”

Wide-area SDN “Switch” 4 SDN Controlled “Switch” Tenant’s Compute Hosts (multiple sites)

Hardware support for OpenFlow experiments OpenFlow in rack hardware –Possible with IBM-branded racks only (not well advertised) –Only OF 1.0 with caveats (see BNT8264 documentation) –Can request a slice in Flukes, mark it as ‘openflow’ and attach your controller –Stitching to other sites not sorted out due to switch limitations Various Cisco and Dell-based racks don’t have OF- capable switches –Ciena, Dell switches 5