RSVP-TE
Encyclopedia
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. Applications running on IP end systems can use RSVP to indicate to other nodes the nature (bandwidth
, jitter
, maximum burst, and so forth) of the packet streams they want to receive. RSVP runs on both IPv4
and IPv6
.
RSVP-TE is detailed in IETF RFC 3209 (updated by RFC 5151). RSVP-TE generally allows the establishment of MPLS label switched path
s (LSPs), taking into consideration network constraint parameters such as available bandwidth and explicit hops.
As of February 2003, as documented in RFC 3468, the IETF MPLS working group deprecated CR-LDP
and decided to focus purely on RSVP-TE. Operational overhead of RSVP-TE compared to the more widely deployed label distribution protocol
(LDP) will generally be higher. This is a classic trade-off
between complexity and optimality in the use of technologies in telecommunications network
s.
Resource Reservation Protocol
The Resource Reservation Protocol is a Transport Layer protocol designed to reserve resources across a network for an integrated services Internet. RSVP operates over an IPv4 or IPv6 Internet Layer and provides receiver-initiated setup of resource reservations for multicast or unicast data flows...
(RSVP) for traffic engineering
Teletraffic engineering
Telecommunications traffic engineering, teletraffic engineering, or traffic engineering is the application of traffic engineering theory to telecommunications...
. It supports the reservation of resources across an IP network. Applications running on IP end systems can use RSVP to indicate to other nodes the nature (bandwidth
Bandwidth (computing)
In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it .Note that in textbooks on wireless communications, modem data transmission,...
, jitter
Jitter
Jitter is the undesired deviation from true periodicity of an assumed periodic signal in electronics and telecommunications, often in relation to a reference clock source. Jitter may be observed in characteristics such as the frequency of successive pulses, the signal amplitude, or phase of...
, maximum burst, and so forth) of the packet streams they want to receive. RSVP runs on both IPv4
IPv4
Internet Protocol version 4 is the fourth revision in the development of the Internet Protocol and the first version of the protocol to be widely deployed. Together with IPv6, it is at the core of standards-based internetworking methods of the Internet...
and IPv6
IPv6
Internet Protocol version 6 is a version of the Internet Protocol . It is designed to succeed the Internet Protocol version 4...
.
RSVP-TE is detailed in IETF RFC 3209 (updated by RFC 5151). RSVP-TE generally allows the establishment of MPLS label switched path
Label Switched Path
In MPLS networking, a Label Switched Path is a path through an MPLS network, set up by a signaling protocol such as LDP, RSVP-TE, BGP or CR-LDP. The path is set up based on criteria in the forwarding equivalence class ....
s (LSPs), taking into consideration network constraint parameters such as available bandwidth and explicit hops.
As of February 2003, as documented in RFC 3468, the IETF MPLS working group deprecated CR-LDP
Constraint-based Routing Label Distribution Protocol
Constraint-based Routing Label Distribution Protocol 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....
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
Label Distribution Protocol is a protocol in which two Label Edge Routers exchange label mapping information. The two LERs are called LDP peers and the exchange of information is bi-directional....
(LDP) will generally be higher. This is a classic trade-off
Trade-off
A trade-off is a situation that involves losing one quality or aspect of something in return for gaining another quality or aspect...
between complexity and optimality in the use of technologies in telecommunications network
Telecommunications network
A telecommunications network is a collection of terminals, links and nodes which connect together to enable telecommunication between users of the terminals. Networks may use circuit switching or message switching. Each terminal in the network must have a unique address so messages or connections...
s.
RFCs
- RFC 3209 - RSVP-TE: Extensions to RSVP for LSP Tunnels
- RFC 3468 - The Multiprotocol Label Switching (MPLS) Working Group decision on MPLS signaling protocols
- RFC 4090 - Fast Reroute Extensions to RSVP-TE for LSP Tunnels
- RFC 5420 - Encoding of Attributes for Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Establishment Using Resource ReserVation Protocol-Traffic Engineering (RSVP-TE)
- RFC 4874 - Exclude Routes - Extension to Resource ReserVation Protocol-Traffic Engineering (RSVP-TE)
- RFC 4920 - Crankback Signaling Extensions for MPLS and GMPLS RSVP-TE
- RFC 5151 - Inter-Domain MPLS and GMPLS Traffic Engineering -- Resource Reservation Protocol-Traffic Engineering (RSVP-TE) Extensions