| | 52 | == GEC11 Network Stitching Engineering Meeting == |
| | 53 | |
| | 54 | Full agenda, summary, and slides for the [wiki:GEC11Stitching GEC11 stitching meeting] are on the wiki. A summary follows. |
| | 55 | |
| | 56 | === Meeting Summary === |
| | 57 | '''Tom Lehman''' reviewed the agreed-upon GENI stitching architecture: |
| | 58 | - Several functions, to be implemented in various locations or |
| | 59 | skipped in certain scenarios : |
| | 60 | - Static topology collection |
| | 61 | - Path computation |
| | 62 | - Workflow/coordination |
| | 63 | - A common schema for describing connections between aggregates, |
| | 64 | and the capabilities of those connections. |
| | 65 | - AM API revisions to support 'chain' (AM to AM) mode, and |
| | 66 | negotiation. |
| | 67 | |
| | 68 | '''The stitching schema''' |
| | 69 | - Based on and interoperable with IDC / OSCARS / perfSonar Topology service |
| | 70 | - AMs advertise connection points |
| | 71 | - Requests and manifests list hop by hop paths |
| | 72 | - http://hpn.east.isi.edu/rspec/ext/stitch/0.1/stitch-schema.xsd |
| | 73 | - Follow links in Background Reading for examples and more |
| | 74 | information |
| | 75 | |
| | 76 | '''Aaron Helsinger''' and '''Chris Benninger''' did a demo of a |
| | 77 | tree-mode (client-driven) VLAN stitching from ProtoGENI (using the |
| | 78 | schema) across ION, to MAX. The script calculates dependencies and |
| | 79 | orders its calls appropriately. |
| | 80 | |
| | 81 | '''Tom''' briefly discussed some remaining points to cover |
| | 82 | - Negotiation: How do 2 Aggregates negotiation a common stitching |
| | 83 | mechanism and configuration? IE, how do they pick a VLAN tag? |
| | 84 | - Proposal: an AM API call that reserves a resource without |
| | 85 | instantiating it, returning the reserved resource and the other |
| | 86 | options that are available |
| | 87 | - Chain mode: need an aggregate to aggregate call |
| | 88 | - Note authorization issues |
| | 89 | |
| | 90 | === Possible Next steps === |
| | 91 | - Make sample stitching client code available |
| | 92 | - Complete schema implementation at ProtoGENI |
| | 93 | - Discuss and agree on APIs to support negotiation (eg of VLAN tags) |
| | 94 | - Investigate policy considerations in having a real ION Aggregate |
| | 95 | Manager |
| | 96 | - Prototype topology service based on perfSonar topology service |
| | 97 | - Prototype path computation service based on IDC computation service |
| | 98 | - Discuss and agree on APIs to support chain/AM-to-AM mode |
