L2TPv3

Abstract: Generalized multiprotocol label switching, also referred to as multiprotocol lambda switching, supports not only devices that perform packet switching, but also those that perform switching in the time, wavelength, and space domains. The development of GMPLS requires modifications to current signaling and routing protocols. It has also triggered the development of new protocols such as the Link Management protocol. We present the traffic engineering enhancements to the Open Shortest Path First Internet routing protocol and ISIS Intradomain Routing Protocol, two popular routing protocols, to support GMPLS. We present the concepts of generalized interfaces, label-switched path hierarchy, and link bundling intended to improve GMPLS scalability. We also discuss the Link Management Protocol which can be used to make the underlying links more manageable.

Abstract: Generalized multiprotocol label switching (GMPLS), also referred to as multiprotocol lambda switching, is a multipurpose control plane paradigm that supports not only devices that perform packet switching, but also devices that perform switching in the time, wavelength, and space domains. The development of GMPLS necessitates enhancements to existing IP signaling and routing protocols. We present enhancements to two commonly used IP signaling protocols, RSVP and LDP, to support GMPLS. We illustrate the concept of hierarchical label switched path setup with an example, discuss mechanisms for bidirectional LSP setup, and describe the applications of suggested labels. We also discuss the important problem of protection and restoration in the GMPLS context. Finally, we describe how various recovery mechanisms can be implemented within the GMPLS framework.

Abstract: A capital expenditure model is a key requirement to evaluate multilayer (ML) metro and core network architectures. Based on the Internet protocol/multiprotocol label switching (IP/MPLS), MPLS-transport profile, optical transport network and WDM technology, a detailed capital expenditure model developed by researchers from system vendors and network operators is introduced. Besides current equipment and corresponding prices for the different layers, it also contains predictions for technology evolution and pricing until 2018. We show how to determine the price of anML node by constructing it from components specified in the cost model. We use the model in a case study where we benchmark the price of an integrated IP/MPLS/WDM solution.

Abstract: The embodiment of the present invention comprises a device-internal data flow organization coupled with a wireless communications medium access control protocol for a set of WLAN “Multiprotocol Devices”, each containing a 2.4 and 5 GHz frequency band-agile CCK and OFDM modulation capable radio, such that the devices may support simultaneous IEEE 802.11a and 802.11b/g-compliant Access Point functionality. The set includes a “Multiprotocol Access Point” that bridges communications from IEEE 802.11a and/or IEEE 802.11b/g compliant WLAN client devices, and other Multiprotocol Devices, to the wired LAN distribution system. Also included is a “Multiprotocol Repeater” that relays communications from the above client and Multiprotocol devices wirelessly to another Multiprotocol Device. The set also includes a “High Capacity Multiprotocol Repeater” that can relay a higher volume of communications from IEEE 802.11a, b or g devices wirelessly to another Multiprotocol Device.