In the present days, the data on particular topic availability is huge and massive. The network virtualization plays very important role in the field of internet. For the Future Internet, Network Virtualization recognized a technology that overcome network ossification [18].Due to existence of the multiple confliction policies, services and alternations to the existing internet, there are some limitations occur according to the following features: robust routing, efficient search, scalability, decentralization, fault tolerances, trust and authentications. We need network virtualization, but the difficulties with the network virtualization are Instantiation means creating virtual networks, logistics means runs them; Management means manage them and Interactions. The creation of virtual network is very difficult and this is referred as future work. In this paper, we propose an algorithm to create virtual node and link for network virtualization. We have already some techniques to create the virtual network but they do not show the exact structure, which we require actually. In this paper, we proposed an algorithm to managing the virtual node and virtual link in any virtual network.

The Per recruit models were applied to assess Major carp stock in the Pattipul of Bihar showed rapid increment in Yield per recruit (Y/R) at low values of fishing mortality (M=0.17/year) and age at first capture (Tc=0.5 years and increasing F (0.50/year) as 1068 g per year. The Y/R above this level was constant or slightly decreased and the recent F value is higher than the biological reference points as F0.1 (0.15 per year), FSB40% (0.13 per year), FSB50% (0.08 per year) and FSB25% (0.24 per year). The Tc increase by one year resulted in slight increase in Y/R, while additional Tc increase led to decrease in Y/R values. The Tc increase in F required to obtaining the maximum Y/R until reaching a optimum state as initial recruitment at constant M, while recent F value gives small increase in recent level of F, increasing the Tc by one year would result in a small increase in biomass per recruit (B/R). The Tc increase caused a gradual increase in B/R, followed by a decline after a certain value of Tc. These results provide evidence of recruitment over-fishing at all optimum fishing levels, and so sustainable management and conservation of Major carps in Pattipul would require a decrease in F to levels less than F0.1 and FSB40%, which can be achieved through a reduction in fishing effort but not through an increase in Tc.