Fig. 1. VON mapping architecture

Fig. 2. Case of VON mapping to physical optical network

Fig. 3. Flow chart of single-line rate VON mapping

Fig. 4. Flow chart of mixed linear rate VON mapping

Fig. 5. Example of optical channel occupied by single-line rate and hybrid line-rate virtual link

Fig. 6. Network Topology Diagram of NSFNET

Fig. 7. Total network cost of VON mapping between single line rate and mixed line rate at different line rates

Fig. 8. Spectral occupancy of single line rate and mixed line rate VON mapping at different line rates

Fig. 9. The number of optical transponders mapped by single line rate and mixed line rate VON at different line rates

Fig. 10. The number of optical regenerators mapped by single line rate and mixed line rate VON at different line rates

Fig. 11. Running time of VON mapping of single line rate and mixed line rate at different line rates

Fig. 12. Network capacity of VON mapping between single line rate and mixed line rate at different line rates