Redes IP/DWDM E IP/OTN: utilizando as redes de transporte de forma inteligente

Abstract

Data traffic has increased significantly and telecommunication carriers are setting their networks to support this new demand. There are several ways to make the backbone expansion, and currently two models are prevalent. The first is to connect directly IP routers via WDM links (IPoWDM). The second is to create OTN networks which add not only the IP, but other types of network traffic (IPoOTN). Optical networks, such as WDM, SDH and OTN are analyzed in order to understand the advantages and disadvantages of each one. Later, papers from different authors, companies and scientific institutions were compared to identify synergies between them. The conclusion is that the OTN networks are a powerful tool, with lower cost per bit than routers, which is gaining traction in the market. On the other hand, some protocols, such as MPLS, facilitated the IP packet transmission via WDM and may be a good alternative to already established networks and lower prediction growth carriers.