Resource Reservation Protocol - Traffic Engineering is an extension of the Resource Reservation Protocol (RSVP) for traffic engineering. It supports the reservation of resources across an

IP network The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suit ...

. Applications running on IP end systems can use RSVP to indicate to other nodes the nature (

bandwidth Bandwidth commonly refers to: * Bandwidth (signal processing) or ''analog bandwidth'', ''frequency bandwidth'', or ''radio bandwidth'', a measure of the width of a frequency range * Bandwidth (computing), the rate of data transfer, bit rate or thr ...

jitter In electronics and telecommunications, jitter is the deviation from true periodicity of a presumably periodic signal, often in relation to a reference clock signal. In clock recovery applications it is called timing jitter. Jitter is a significa ...

, maximum burst, and so forth) of the

packet Packet may refer to: * A small container or pouch ** Packet (container), a small single use container ** Cigarette packet ** Sugar packet * Network packet, a formatted unit of data carried by a packet-mode computer network * Packet radio, a fo ...

streams they want to receive. RSVP runs on both

IPv4 Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based internetworking methods in the Internet and other packet-switched networks. IPv4 was the first version de ...

and

IPv6 Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communication protocol, communications protocol that provides an identification and location system for computers on networks and routes traffic ...

. RSVP-TE generally allows the establishment of

MPLS Multiprotocol Label Switching (MPLS) is a routing technique in telecommunications networks that directs data from one node to the next based on labels rather than network addresses. Whereas network addresses identify endpoints the labels identif ...

label switched path Multiprotocol Label Switching (MPLS) is a routing technique in telecommunications networks that directs data from one node to the next based on labels rather than network addresses. Whereas network addresses identify endpoints the labels identif ...

s (LSPs), taking into consideration network constraint parameters such as available bandwidth and explicit hops. Updated by , , , , , , , , and .

History

, the IETF MPLS working group deprecated

CR-LDP Constraint-based Routing Label Distribution Protocol (CR-LDP) is a control protocol used in some computer networks. As of February 2003, the IETF MPLS working group deprecated CR-LDP and decided to focus purely on RSVP-TE. It is an extension of th ...

and decided to focus purely on RSVP-TE. Operational overhead of RSVP-TE compared to the more widely deployed

label distribution protocol Label Distribution Protocol (LDP) is a protocol in which routers capable of Multiprotocol Label Switching (MPLS) exchange label mapping information. Two routers with an established session are called LDP peers and the exchange of information is bi- ...

(LDP) will generally be higher. This is a classic

trade-off A trade-off (or tradeoff) is a situational decision that involves diminishing or losing one quality, quantity, or property of a set or design in return for gains in other aspects. In simple terms, a tradeoff is where one thing increases, and anot ...

between complexity and optimality in the use of technologies in

telecommunications network A telecommunications network is a group of nodes interconnected by telecommunications links that are used to exchange messages between the nodes. The links may use a variety of technologies based on the methodologies of circuit switching, message ...

Standards

* - RSVP-TE: Extensions to RSVP for LSP Tunnels * - The Multiprotocol Label Switching (MPLS) Working Group decision on MPLS signaling protocols * - Fast Reroute Extensions to RSVP-TE for LSP Tunnels * - Exclude Routes - Extension to Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) * - Crankback Signaling Extensions for MPLS and GMPLS RSVP-TE * - Inter-Domain MPLS and GMPLS Traffic Engineering—Resource Reservation Protocol-Traffic Engineering (RSVP-TE) Extensions * - Encoding of Attributes for Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Establishment Using Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) * - Node Behavior upon Originating and Receiving Resource Reservation Protocol (RSVP) Path Error Messages * - Generalized MPLS (GMPLS) Protocol Extensions for Multi-Layer and Multi-Region Networks (MLN/MRN)

History

Standards

References

Further reading