"NSLP for Quality-of-Service Signaling", Jukka Manner, Georgios Karagiannis, Andrew McDonald, 7-Feb-08. ( bytes)

This specification describes the NSIS Signaling Layer Protocol (NSLP) for signaling QoS reservations in the Internet. It is in accordance with the framework and requirements developed in NSIS. Together with GIST, it provides functionality similar to RSVP and extends it. The QoS NSLP is independent of the underlying QoS specification or architecture and provides support for different reservation models. It is simplified by the elimination of support for multicast flows. This specification explains the overall protocol approach, design decisions made and provides examples. It specifies object, message formats and processing rules.

"NAT/Firewall NSIS Signaling Layer Protocol (NSLP)", Martin Stiemerling, Hannes Tschofenig, Cedric Aoun, Elwyn Davies, 3-Nov-08. ( bytes)

This memo defines the NSIS Signaling Layer Protocol (NSLP) for Network Address Translators (NATs) and firewalls. This NSLP allows hosts to signal on the data path for NATs and firewalls to be configured according to the needs of the application data flows. For instance, it enables hosts behind NATs to obtain a public reachable address and hosts behind firewalls to receive data traffic. The overall architecture is given by the framework and requirements defined by the Next Steps in Signaling (NSIS) working group. The network scenarios, the protocol itself, and examples for path-coupled signaling are given in this memo.

"GIST: General Internet Signalling Transport", Henning Schulzrinne, Robert Hancock, 31-Oct-08. ( bytes)

This document specifies protocol stacks for the routing and transport of per-flow signalling messages along the path taken by that flow through the network. The design uses existing transport and security protocols under a common messaging layer, the General Internet Signalling Transport (GIST), which provides a common service for diverse signalling applications. GIST does not handle signalling application state itself, but manages its own internal state and the configuration of the underlying transport and security protocols to enable the transfer of messages in both directions along the flow path. The combination of GIST and the lower layer transport and security protocols provides a solution for the base protocol component of the "Next Steps in Signalling" framework.

"Applicability Statement of NSIS Protocols in Mobile Environments", Takako Sanda, Xiaoming Fu, Seong-Ho Jeong, Jukka Manner, Hannes Tschofenig, 18-Nov-08. ( bytes)

Mobility of an IP-based node affects routing paths, and as a result, can have a significant effect on the protocol operation and state management. This draft discusses the effects mobility can cause to the NSIS protocol suite, and how the protocols operate in different scenarios, with mobility management protocols.

"RMD-QOSM - The Resource Management in Diffserv QOS Model", Attila Bader, 7-Jul-08. ( bytes)

This document describes an NSIS QoS Model for networks that use the Resource Management in Diffserv (RMD) concept. RMD is a technique for adding admission control and pre-emption function to Differentiated Services (Diffserv) networks. The RMD QoS Model allows devices external to the RMD network to signal reservation requests to edge nodes in the RMD network. The RMD Ingress edge nodes classify the incoming flows into traffic classes and signals resource requests for the corresponding traffic class along the data path to the Egress edge nodes for each flow. Egress nodes reconstitute the original requests and continue forwarding them along the data path towards the final destination. In addition, RMD defines notification functions to indicate overload situations within the domain to the edge nodes.

"GIST State Machine", Tseno Tsenov, Hannes Tschofenig, Xiaoming Fu, Cedric Aoun, Elwyn Davies, Intellectual Property, 3-Nov-08. ( bytes)

This document describes the state machines for the General Internet Signaling Transport (GIST). The states of GIST nodes for a given flow and their transitions are presented in order to illustrate how GIST may be implemented. (This Internet-Draft is also available in PDF format [ bytes].)

"Y.1541-QOSM -- Y.1541 QoS Model for Networks Using Y.1541 QoS Classes", Gerald Ash, Al Morton, Martin Dolly, Percy Tarapore, Chuck Dvorak, Yacine Mghazli, 27-Oct-08. ( bytes)

This draft describes a QoS-NSLP QoS model (QOSM) based on ITU-T Recommendation Y.1541 Network QoS Classes and related signaling requirements. Y.1541 specifies 8 classes of Network Performance objectives, and the Y.1541-QOSM extensions include additional QSPEC parameters and QOSM processing guidelines.

"NSIS Operation Over IP Tunnels", Charles Shen, Henning Schulzrinne, Sung-Hyuck Lee, Jong Bang, 3-Nov-08. ( bytes)

This draft presents an NSIS operation over IP tunnel scheme using QoS NSLP as the NSIS signaling application. Both sender-initiated and receiver-initiated NSIS signaling modes are discussed. The scheme creates individual or aggregate tunnel sessions for end-to-end sessions traversing the tunnel. Packets belonging to qualified end- to-end sessions are mapped to corresponding tunnel sessions and assigned special flow IDs to be distinguished from the rest of the tunnel traffic. Tunnel endpoints keep the association of the end-to- end and tunnel session mapping, so that adjustment in one session can be reflected in the other.

"General Internet Signaling Transport (GIST) over SCTP", Xiaoming Fu, Christian Dickmann, Jon Crowcroft, 26-Oct-08. ( bytes)

The General Internet Signaling Transport (GIST) protocol currently uses TCP or TLS over TCP for connection mode operation. This document describes the usage of GIST over the Stream Control Transmission Protocol (SCTP). The use of SCTP can take advantage of features provided by SCTP, namely streaming-based transport, support of multiple streams to avoid head of line blocking, the support of multi-homing to provide network level fault tolerance, as well as partial reliability extension for partially reliable data transmission. Additionally, the support for datagram TLS is also discussed.

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