Een Semantisch Model voor Complexe Computer Netwerken
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1 Een Semantisch Model voor Complexe Computer Netwerken Jeroen van der Ham System and Network Engineering,Universiteit van TNO Defence, Security and Safety
2 Networks in Real Life 2
3 Network Management 3
4 Network Management 4
5 GLIF Global Optical Network 7
6 Control Plane
7 Interoperable Control Plane 9
8 Semantic Web RDF - Semantic Web technique XML as an interchange syntax Data is a graph described by triplets Subject Predicate Object 10
9 Network Description Device Interface Broadcast Segment Location name description hasinterface locatedat capacity metric connectedto 11
10 12 NDL Example
11 5 TITAAN Network
12 6
13 12
14 13
15 Pathfinding SURFnet6
16 Pathfinding GLIF
17 Disclaimer: Historical Example Multilayer Pathfinding Université du Quebec Gigabit Ethernet can adapt GE in STS-24c CA Net Canada Universiteit van OC-192 (22 free) 2x OC-192 (87 free) GE StarLight Chicago can adapt GE in STS-24c or STS-3c-7v OC-192 (38 free) MAN LAN New York 2x OC-192 (63 free) NetherLight can adapt GE in STS-3c-7v Ref: Freek Dijkstra (UvA)
18 Université du Quebec Gigabit Ethernet can adapt GE in STS-24c CA Net Canada Universiteit van OC-192 (22 free) 2x OC-192 (87 free) GE StarLight Chicago can adapt GE in STS-24c or STS-3c-7v OC-192 (38 free) MAN LAN New York 2x OC-192 (63 free) NetherLight can adapt GE in STS-3c-7v
19 Université du Quebec Gigabit Ethernet can adapt GE in STS-24c CA Net Canada Universiteit van OC-192 (22 free) 2x OC-192 (87 free) GE StarLight Chicago can adapt GE in STS-24c or STS-3c-7v OC-192 (38 free) MAN LAN New York 2x OC-192 (63 free) NetherLight can adapt GE in STS-3c-7v
20 Université du Quebec Gigabit Ethernet can adapt GE in STS-24c CA Net Canada Universiteit van OC-192 (22 free) 2x OC-192 (87 free) GE StarLight Chicago can adapt GE in STS-24c or STS-3c-7v OC-192 (38 free) MAN LAN New York 2x OC-192 (63 free) NetherLight can adapt GE in STS-3c-7v
21 Université du Quebec Gigabit Ethernet can adapt GE in STS-24c CA Net Canada Universiteit van OC-192 (22 free) 2x OC-192 (87 free) GE StarLight Chicago can adapt GE in STS-24c or STS-3c-7v OC-192 (38 free) MAN LAN New York 2x OC-192 (63 free) NetherLight can adapt GE in STS-3c-7v
22
23 Edges Vertex
24 Device Interfaces Links
25 Switching matrix A devices switches data based on: The source interface One or more labels Example label types: Ethernet VLAN SONET STS Channel Wavelength (λ) Channels For example, all data from channel 31 of interface 2 is forwarded to channel 28 of interface 4.
26 Quebec CA*net StarLight NetherLight Switch (Device) switchingcapability... 3c-7v 3c-7v 3c-7v 3c-7v 24c 24c 3c-7v MAN LAN 24c 24c Interface Vertices label Link Edges capacity Adaptation max. # of channels...
27 Université du Quebec Gigabit Ethernet can adapt GE in STS-24c CA Net Canada Universiteit van OC-192 (22 free) 2x OC-192 (87 free) GE StarLight Chicago can adapt GE in STS-24c or STS-3c-7v OC-192 (38 free) MAN LAN New York 2x OC-192 (63 free) NetherLight can adapt GE in STS-3c-7v
28 Université du Quebec Université du Quebec Université du Quebec Université du Quebec Université du Quebec Université du Quebec Université du Quebec Université du Quebec CA Net Canada StarLight StarLight CA Net Chicago StarLight Chicago Canada Chicago StarLight Chicago CA Net StarLight Chicago StarLight Canada CA Net Canada CA Net CA Net Canada CA Net Canada CA Net Canada Canada Chicago StarLight Chicago StarLight Chicago MAN LAN MAN New York LAN MAN New York LAN MAN New York LAN New MAN York New MAN New MAN YorkLAN MAN LAN New York New York NetherLight NetherLight NetherLight NetherLight NetherLight NetherLight NetherLight NetherLight Universiteit van Universiteit van Universiteit van Universiteit van Universiteit van Universiteit van Universiteit van Universiteit van
29 IP layer Ethernet layer VC-4 OC-192 layer layer UTP fiber layer layer End host SONET switch with Ethernet intf. Ethernet & SONET switch SONET switch SONET switch with Ethernet intf. End host Université du Quebec CA Net Canada StarLight Chicago MAN LAN New York NetherLight Universiteit van
30 Multi-Layer Pathfinding
31 Topology Aggregation
32 A1 A3 A2 Aggregated B Aggregated C A1 A2 B1 B2 C1 C2 A3 B3 C3 C4
33 19 Ref: Cees de Laat (UvA) RDF Infrastructure
34 Results
35 Conclusions NDL provides an interoperable description of computer networks NDL provides solutions for: - Network maps - Network monitoring - Network provisioning - Topology dissemenation Based on RDF, NDL is extensible and integrates with other independent ontologies. 20
36 Questions? Contact:
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