Abstract
Generalized multiprotocol label switching (GMPLS) network nodes can be connected together by many data channels or links. Each channel may be a fiber, but there may be many channels within a single link, for example, separate lambdas within a WDM fiber. It is certainly possible to configure this information at each label switching router (LSR), but as the number of data channels increases, this becomes a tremendous management overhead prone to error and completely inflexible to fibering changes within the network. The problem is handled by the link management protocol (LMP) that helps switches discover the capabilities and identifiers of links that connect them. The protocol also determines the operational status of links and helps the LSRs to detect and isolate faults in optical networks where some switches do not utilize electronic components on the data path—all-optical switches are often called OOOs, or photonic cross-connects, PXCs. This chapter describes how links are managed in a GMPLS system and explores the peculiarities of link management in different types of transport networks with a special accent on WDM networks. The chapter introduces LMP and its extensions for control and management within WDM systems (LMP-WDM) are introduced in the chapter. This chapter also explains how link management affects traffic engineering in GMPLS.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
