Metro Ethernet

Conclusion

As discussed in this chapter, GMPLS is necessary to establish a dynamic way to provision optical networks. You have seen the benefits and drawbacks of both the static centralized and dynamic decentralized provisioning models. The chapter also discussed the different signaling models, such as the overlay, peer, and augmented models. These resemble how IP packet-based networks are deployed today over ATM or Frame Relay circuit-based networks. You have also seen how GMPLS uses labels to cross-connect the circuits for TDM and WDM networks. Although the concept of labels was adopted, the use of these labels is quite different from the traditional use of labels in data forwarding.

The next chapter goes into more detail about the extensions ...