Skip to main content
Figure 1 | Journal of Internet Services and Applications

Figure 1

From: PolyViNE: policy-based virtual network embedding across multiple domains

Figure 1

Overview of inter-domain VN embedding: (a) substrate networks ( G i S = N i S , L i S ) from four InPs connected using inter-domain links; (b) the underlay ( G U =( N U , L U )) consisting of border nodes and inter-domain links; (c) the underlay multigraph ( G W =( N W , L W )) after topology abstraction; (d) controller network ( G C =( N C , L C )) obtained through simplification; (e) a single VN request ( G V =( N V , E V )) with CPU constraints in boxes and bandwidth constraints over links; (f) the same VN request ( G V ) with location constraints on the virtual nodes shown in vertical boxes covering possible host physical nodes for them; (g) the embedded VN request with virtual nodes mapped into three different InPs; (h) the meta-VN request ( G M V = N M V , L M V ); (i) an InP-level view of the embedding (note that, InP #2 has not embedded any virtual node but still it is in the embedding by being in an inter-domain virtual link).

Back to article page