- T-MPLS
T MPLS or Transport MPLS is a transport network layer technology that uses extensions to a subset of the existing Multiprotocol Label Switching MPLS standards and is designed specifically for application in transport networks. Work to define T MPLS was started by the ITU T in February 2006. It was intended ... by removing MPLS features that are not relevant to co ps applications and adding mechanisms that provide support of critical transport functionality. ITU T ceased work on T MPLS in December 2008, in favour of MPLS TP standardization. ref http www.itu.int ITU T newslog Clarifications On MPLS For Transport Network.aspx Clarifications on MPLS for transport network ITU T newslog, 10 March 2009 accessed 28 06 2009 ref T MPLS uses the same architectural principles of layered networking that are used ... for use in networks that use those other technologies. In this way T MPLS was intended .... T MPLS is a low cost Layer 2 technology that provides Quality of service QoS , end to end OA&M and protection switching. The following ITU T Recommendations exist for T MPLS . These Recommendations will be superseded i.e., replaced by new revisions that apply to MPLS TP and reference the joint work ... last first authorlink coauthors title Architecture of Transport MPLS T MPLS layer network work publisher ... en format HTML doi accessdate ref Architecture of Transport MPLS T MPLS Layer Network G.8112 ref cite web last first authorlink coauthors title Interfaces for the Transport MPLS T MPLS hierarchy ... G.8112 en format HTML doi accessdate ref Interfaces for the Transport MPLS T MPLS Hierarchy G.8121 ref cite web last first authorlink coauthors title Characteristics of Transport MPLS T MPLS equipment ... www.itu.int rec T REC G.8121 en format HTML doi accessdate ref Characteristics of Transport MPLS equipment ... switching for Transport MPLS T MPLS networks work publisher International Telecommunication Union ... protection switching for Transport MPLS T MPLS networks Y.Sup4 ref cite web last first authorlink coauthors ... more details
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- Mpls
MPLS or Mpls can refer to Minneapolis, Minnesota , United States Multiprotocol Label Switching , a data carrying mechanism in computer networking From MoS DAB prefer ONE LINK per entry, short descriptions, avoid piping and external links disambig ... more details
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- MPLS-TP
context date March 2011 MPLS TP or MPLS Transport Profile is a profile of Multiprotocol Label Switching MPLS whose definition has been commenced by the IETF . It will be designed for use as a network layer ... network experts of the ITU T , specifically SG15, as T MPLS . Since 2008 the work is progressed in a cooperation between ITU T and IETF . The required protocol extensions to MPLS being designed ... packet switched CO PS application. It will offer a dedicated MPLS implementation by removing features ... transport functionality. MPLS TP is to be based on the same architectural principles of layered networking ... have already developed management processes and work procedures based on these principles. MPLS TP will provide ... scale work procedures similar to other packet transport technologies. MPLS TP is expected to be a low ... flash 035 may08.html 003 format HTML doi accessdate ref on the design of MPLS TP . Based on this agreement ... the existing T MPLS standards ref http www.itu.int oth T0906000001 en ref based on the MPLS TP related RFC s listed below. RFC or drafts The following IETF RFC s or drafts exist for MPLS TP class wikitable RFC Title Draft RFC 5317 Joint Working Team JWT Report on MPLS Architectural Considerations for a Transport Profile draft bryant mpls tp jwt report RFC 5654 MPLS TP Requirements draft ietf mpls tp requirements RFC 5921 A Framework for MPLS in Transport Networks draft ietf mpls tp framework RFC 5860 Requirements for OAM in MPLS Transport Networks draft ietf mpls tp oam requirements RFC 5960 MPLS Transport Profile Data Plane Architecture draft ietf mpls tp data plane tbd MPLS TP OAM Framework and Overview http tools.ietf.org html draft ietf mpls tp oam framework draft ietf mpls tp oam framework tbd MPLS TP OAM Analysis http tools.ietf.org html draft ietf mpls tp oam analysis draft ietf mpls tp oam analysis RFC 5586 Assignment of the Generic Associated Channel Header Label GAL draft ietf mpls tp gach gal tbd MPLS TP ACH TLV s http tools.ietf.org html draft ietf mpls tp ach ... more details
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- MPLS VPN
Refimprove date August 2008 POV check date February 2009 MPLS VPN is a family of methods for harnessing the power of Multiprotocol Label Switching MPLS to create virtual private network s VPNs . MPLS is well suited to the task as it provides traffic isolation and differentiation without substantial overhead. Citation needed date July 2009 Layer 3 MPLS VPN A layer 3 MPLS VPN, also known as L3VPN, combines enhanced BGP signaling, MPLS traffic isolation and router support for VRFs VRF Virtual Routing Forwarding to create an IP based VPN. Compared to other types of VPN such as IPSec VPN or ATM, MPLS L3VPN is more cost efficient and can provide more services to customers. However, there is no implementation of privacy of the traffic sent over the MPLS, except to the degree that you trust the operator of the MPLS equipment along the way. If privacy is a concern, other encryption method such as end to end IPSec tunnels should be considered before injecting the traffic to MPLS backbone. Category MPLS networking ... more details
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- File:Mpls rotocolstack.jpg
indian mpls Licensing PD self date January 2009 ... more details
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- Layer 2 MPLS VPN
Unreferenced date October 2008 A Layer 2 MPLS VPN is a term in computer networking . It is a method that Internet service providers use to segregate their network for their customers, to allow them to transmit data over an IP network . This is often sold as a service to businesses. Layer 2 VPNs are a type of Virtual Private Network VPN that uses MPLS labels to transport data. The communication occurs between routers that are known as Provider Edge routers PEs , as they sit on the edge of the provider s network, next to the customer s network. Internet providers who have an existing Layer 2 network such as Asynchronous Transfer Mode ATM or Frame Relay may choose to use these VPNs instead of the other common MPLS VPN, Network Layer Layer 3 . There is no one IETF standard for Layer 2 MPLS VPNs. Instead, two methodologies may be used. Both methods use MPLS Headers to Encapsulation networking encapsulate data. However, they differ in the way they transport data. Types of Layer 2 MPLS VPNs BGP based The BGP based type is based on a draft specification by Kireeti Kompella , from Juniper Networks . It uses the Border Gateway Protocol BGP as the mechanism for PE routers to communicate with each other about their customer connections. Each router connects to a central cloud, using BGP. This means that when new customers are added usually to new routers , the existing routers will communicate with each other, via BGP, and automatically add the new customers to the service. LDP based The second type is based on a draft specification by Luca Martini from Cisco Systems . This method is also known as a Layer 2 circuit . It uses the Label Distribution Protocol LDP to communicate between PE routers. In this case, every router will connect to every other router in the VPN, which differs from the BGP based methodology. Methods used by Vendors Alcatel Lucent LDP based Foundry Networks LDP ... based Huawei Technologies LDP based & BGP based NE S series Compu network stub Category MPLS networking ... more details
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- MPLS local protection
MPLS Fast Reroute also called MPLS local restoration or MPLS local protection is a local restoration network resilience network resiliency mechanism. It is actually a feature of Resource reservation protocol RSVP Teletraffic engineering Traffic Engineering RSVP TE . In MPLS local protection each Label Switched Path LSP passing through a facility ref The term facility is usually referred to a link or node. ref is protected by a backup path which originates at the node immediately upstream to that facility. ref name aslam cite paper author Aslam et al. title NPP A Facility Based Computation Framework for Restoration Routing Using Aggregate Link Usage Information url http cat.inist.fr ?aModele afficheN&cpsidt 16546516 version QoS IP 2005 quality of service in multiservice IP network date 2005 02 02 accessdate 2006 10 27 ref ref name raza cite paper author Raza et al. title Online routing of bandwidth guaranteed paths with local restoration using optimized aggregate usage information url http ieeexplore.ieee.org iel5 9996 32109 01494347.pdf version IEEE ICC 2005 accessdate 2006 10 27 ref ref name LiLi cite journal author Li Li et al. title Routing bandwidth guaranteed paths with local restoration in label switched networks url http ieeexplore.ieee.org iel5 49 30289 01391048.pdf?tp &arnumber 1391048&isnumber 30289 version IEEE Journal on Selected Areas in Communications accessdate 2006 10 27 ref ref name rfc4090 cite paper author Pan et al. title Fast Reroute Extensions to RSVP TE for LSP Tunnels networks url http tools.ietf.org html rfc4090 version RFC 4090 accessdate 2006 10 27 ref ref name Kodialam cite paper author Kodialam et al. title Dynamic Routing of Locally Restorable ... such as VoIP . In contrast, MPLS local protection meets the requirements of real time applications ... down. Local protection fault models Image Localprotection.JPG thumb 400px An illustration of MPLS ... MPLS networking ... more details
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- File:Mpls 003.jpg
Summary Ryan Ludens. Campbell Mithun Tower, Feb. 3rd, 2007. Minneapolis, MN. Licensing PD self date February 2007 ... more details
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- File:Mpls 001.jpg
Summary Ryan Ludens Feb. 3rd, 2007. Minneapolis Institute of Arts. Licensing PD self date February 2007 Category Images of Minneapolis, Minnesota ... more details
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- File:Mpls 004.jpg
Summary Ryan Ludens Feb. 3rd, 2007 AT&T Tower in Minneapolis, MN. Licensing PD self date February 2007 ... more details
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- Label Information Base
Orphan date February 2009 Label Information Base is the software table maintained by IP Multiprotocol Label Switching MPLS capable router s to store the details of port and the corresponding MPLS router label to be popped pushed on incoming outgoing MPLS packets. br Entries are populated from label distribution protocols. LIB functions in the control plane of cisco routers MPLS layer. It is used by the label distribution protocol for mapping the next hop labels Category MPLS networking compu network stub ... more details
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- File:Oarfolk.jpg
Source http www.thirdav.com hd discog clubs mpls oarfolk 2.jpg Licensing NoRightsReserved Category Images of Minneapolis, Minnesota ... more details
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- Label edge router
Unreferenced stub auto yes date December 2009 A label edge router LER , also known as edge LSR is a router that operates at the edge of an MPLS network. When forwarding Internet Protocol IP datagram s into the MPLS domain, it uses routing information to determine appropriate labels to be affixed, labels the packet accordingly, and then forwards the labelled packets into the MPLS domain. Likewise, upon receiving a labelled packet which is destined to exit the MPLS domain, the LER strips off the label and forwards the resulting IP packet using normal IP forwarding rules. DEFAULTSORT Label Edge Router Category MPLS networking Compu network stub de Label Edge Router ... more details
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- P Router
IPstack In Multi protocol label switching Multi Protocol Label Switching MPLS , a P Router or Provider Router is a Label Switch Router LSR that functions as a transit router of the core network. The P Router typically connected to one or more Provider Edge PE Routers . Category MPLS networking compu network stub ... more details
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- Virtual Leased Line
Virtual Leased Line VLL is a way to provide Ethernet based point to point communication over IP MPLS networks. The term Virtual Leased Line is also used to describe a point to point bonded connection using the Broadband Bonding technology. This implementation is bonding in layer4. In the industry, the technology is also referred to as Virtual Private Wire Service VPWS or EoMPLS Ethernet over MPLS . VLL uses the pseudo wire encapsulation for transporting Ethernet traffic over an MPLS tunnel across an IP MPLS backbone. See also Multiprotocol Label Switching Virtual Private LAN Service External links http ietf.org html.charters l2vpn charter.html Layer 2 Virtual Private Networks l2vpn working group homepage http ietf.org html.charters pwe3 charter.html Pseudo Wire Emulation Edge to Edge pwe3 working group homepage Category MPLS networking Category Network protocols internet stub ... more details
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- Martini draft
The Martini drafts are contributions made to the IETF s PWE3 Pseudo Wire Emulation Edge to Edge working group by Luca Martini of Cisco Systems formerly of Level 3 Communications and a number of other authors. They define a method to transport a layer 2 protocol across an Multiprotocol Label Switching MPLS network. The Martini trans draft defines the transport mechanism using the Label Distribution Protocol LDP protocol. The Martini encaps series of drafts defines how specific layer 2 protocols are encapsulated prior to being carried in the MPLS network. Provision is made for Synchronous optical networking SONET SDH , Ethernet , Asynchronous Transfer Mode ATM and frame relay . The encapsulation defined by the Martini drafts has been published as a Historical RFC http www.rfc editor.org rfc rfc4905.txt RFC 4905 Encapsulation Methods for Transport of Layer 2 Frames over MPLS Networks . See also Layer 2 MPLS VPN Pseudo wire External links http www.ietf.org html.charters pwe3 charter.html PWE3 working group homepage http www.rfc editor.org rfc rfc4905.txt Encapsulation Methods for Transport of Layer 2 Frames over MPLS Networks Compu network stub Category MPLS networking Category Level 3 Communications ... more details
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- Virtual Switching Instance
Multiple issues orphan February 2009 context October 2009 unreferenced July 2008 Similar to VRF Virtual Routing and Forwarding Instance maintained in IP MPLS routers to deliver layer 3 VPN s, IP VPN s, IP MPLS switches maintain a Virtual Switching Instance VSI to deliver layer 2 VPN s, VPLS . As VRF s keep Internet Protocol IP route entries for a particular L3 VPN, VSIs keep MAC address entries for a particular VPLS . MAC addresses are learned on pseudowires an L2 switch learns MAC addresses on ports . Category MPLS networking compu network stub ... more details
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- Forwarding equivalence class
A Forwarding Equivalence Class FEC is a term used in Multiprotocol Label Switching MPLS to describe a set of packets with similar and or identical characteristics which may be forwarded the same way that is, they may be bound to the same MPLS label. Characteristics determining the FEC of a higher layer packet depend on the configuration of the router, but typically this is at least the destination IP address. Quality of service class is also often used. Thus, a Forward Equivalence Class tends to correspond to a label switched path LSP . The reverse is not true, however an LSP may be and usually is used for multiple FECs. http www.cisco.com en US tech tk436 tk428 technologies q and a item09186a00800949e5.shtml qa4 MPLS FAQ For Beginners What is a Forwarding Equivalence Class FEC ? Category MPLS networking de Forwarding Equivalence Class it Forwarding Equivalent Class ... more details
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- Label Switched Path
In Multi Protocol Label Switching MPLS networking, a Label Switched Path LSP is a path through an MPLS network, set up by a signaling protocol such as Label Distribution Protocol LDP , RSVP TE , BGP or CR LDP . The path is set up based on criteria in the forwarding equivalence class FEC . The path begins at a Label Edge Router LER , which makes a decision on which label to prefix to a packet based on the appropriate FEC. It then forwards the packet along to the next router in the path, which swaps the packet s outer label for another label, and forwards it to the next router. The last router in the path removes the label from the packet and forwards the packet based on the header of its next layer, for example IPv4 . Due to the forwarding of packets through an LSP being opaque to higher network layers, an LSP is also sometimes referred to as an MPLS tunnel. The router which first prefixes the MPLS header to a packet is called an ingress router . The last router in an LSP, which pops the label from the packet, is called an egress router . Routers in between, which need only swap labels, are called transit router s or Label Switching Router LSR s. Note that LSPs are unidirectional they enable a packet to be label switched through the MPLS network from one endpoint to another. Since bidirectional communication is typically desired, the aforementioned dynamic signaling protocols can set up an LSP in the other direction to compensate for this. When protection is considered, LSPs could be categorized as primary working , secondary backup and tertiary LSP of last resort . As described above, LSPs are normally P2P Point to Point . A new concept of LSPs, which are known as P2MP Point to Multi Point , was introduced recently. These are mainly used for multicasting purposes. External links MPLS Architecture, RFC 3031 LSP Hierarchy with Generalized MPLS Traffic Engineering, RFC 4206 Detecting MPLS Data Plane Failures, RFC 4379 LSP Ping Category MPLS networking Compu network stub ... more details
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- VLL
VLL may refer to Virtual Leased Line , an Ethernet based communication over IP MPLS networks Lego Mindstorms Codepilot Visual Light Link , a component of a Lego robotics kit Valladolid Airport s IATA code disambig ... more details
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- Ingress router
An ingress router is a Label Switch Router that is a starting point source for a given Label Switched Path LSP . An ingress router may be an egress router or an intermediate router for any other LSP s . Hence the role of ingress and egress routers is LSP specific. Usually, the Multiprotocol Label Switching MPLS label is attached with an IP packet at the ingress router and removed at the egress router, whereas label swapping is performed on the intermediate routers. However, in special cases such as LSP Hierarchy in RFC 4206, LSP Stitching http tools.ietf.org html draft ietf ccamp lsp stitching 06 and MPLS local protection the ingress router could be pushing label in label stack of an already existing MPLS packet instead of an IP packet . Note that, although the ingress router is the starting point of an LSP, it may or may not be the source of the under lying IP packets. Category MPLS networking computer stub ... more details
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- MLPS
MLPS may mean Martin Luther Preparatory School , a school located in Prairie du Chien, Wisconsin , from 1979 to 1995. Minneapolis, Minnesota , correctly abbreviated as MPLS . disambig Category Initialisms ... more details
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- File:Localprotection.JPG
Summary I have created that file to illustrate MPLS local protection User Ibrahimfaisal 16 56, 27 October 2006 UTC ShouldBeSVG Licensing PD self date October 2006 ... more details
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- RSVP-TE
Protocol Label Switching MPLS 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 ... Switching MPLS Label Switched Path LSP Establishment Using Resource ReserVation Protocol Traffic ... 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 ... more details
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- Customer edge
IPstack The customer edge CE is the router at the customer premises that is connected to the provider edge of a service provider Internet Protocol IP Multi protocol label switching MPLS network. CE peers with the PE and exchanges routes with the corresponding VRF inside the PE. The routing protocol used could be static or dynamic an Interior Gateway Protocol like OSPF or an Exterior Gateway Protocol like BGP . Category MPLS networking compu network stub ... more details
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