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Topic: Multiprotocol Label Switching

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	RFC 3031 - Multiprotocol Label Switching Architecture
		If a packet's label stack is of depth m, we refer to the label at the bottom of the stack as the level 1 label, to the label above it (if such exists) as the level 2 label, and to the label at the top of the stack as the level m label.
		The procedure of binding a single label to a union of FECs which is itself a FEC (within some domain), and of applying that label to all traffic in the union, is known as "aggregation".
		When a labeled packet is received, the LSR must decode it to determine the current value of the label stack, then must operate on the label stack to determine the new value of the stack, and then encode the new value appropriately before transmitting the labeled packet to its next hop.
	ip-doc.com /rfc/rfc3031 (15780 words)

	RFC 3031 (rfc3031) - Multiprotocol Label Switching Architecture
		Label Assignment and Distribution In the MPLS architecture, the decision to bind a particular label L to a particular FEC F is made by the LSR which is DOWNSTREAM with respect to that binding.
		If a packet's label stack is of depth m, we refer to the label at the bottom of the stack as the level 1 label, to the label above it (if such exists) as the level 2 label, and to the label at the top of the stack as the level m label.
		When a labeled packet is received, the LSR must decode it to determine the current value of the label stack, then must operate on the label stack to determine the new value of the stack, and then encode the new value appropriately before transmitting the labeled packet to its next hop.
	www.faqs.org /rfcs/rfc3031.html (17313 words)

	Multiprotocol Label Switching - Wikipedia, the free encyclopedia
		Label Lookup and Label Switching may be faster than usual RIB lookup because it can take place directly into fabric and not CPU.
		In a swap operation the label is swapped with a new label, and the packet is forwarded along the path associated with the new label.
		The forwarding of the packet is done based on the contents of the labels, which allows "protocol independent packet forwarding" that does not need to look at a protocol-dependent routing table and avoids the expensive IP longest prefix match at each hop.
	en.wikipedia.org /wiki/Multiprotocol_Label_Switching (1890 words)

	Evolution of Multiprotocol Label Switching
		Multiprotocol label switching (MPLS) [3, 4] is not a silver bullet to cure existing or forthcoming problems, but rather an enabling technology which addresses some of these scaling issues.
		The intermediate LDP peers for the lower-level LSP propagate the stack labels as attributes of the lower-level labels.
		A tree results because of the "merging" of switched paths that occurs at a node when multiple upstream switched paths for a given stream are spliced to a single downstream switched path for the stream.
	www.comsoc.org /ci/private/1998/may/Feldman.html (8960 words)

	[No title]
		Labels A label is a short, fixed length, locally significant identifier which is used to identify a FEC.
		Label Assignment and Distribution In the MPLS architecture, the decision to bind a particular label L to a particular FEC F is made by the LSR which is DOWNSTREAM with respect to that binding.
		Label Distribution Protocol Transport A label distribution protocol is used between nodes in an MPLS network to establish and maintain the label bindings.
	www.ietf.org /rfc/rfc3031.txt (15968 words)

	Multiprotocol Label Switching (mpls) Charter
		Label Distribution Protocol Extensions for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths (73514 bytes)
		Multiprotocol Label Switching Architecture (RFC 3031) (147175 bytes)
		ICMP Extensions for MultiProtocol Label Switching (RFC 4950) (15091 bytes)
	www.ietf.org /html.charters/mpls-charter.html (1342 words)

	* Multiprotocol label Switching *
		Label is a short is a short fixed length, which is physically contiguous, and is a locally significant identifier used to represent the Forwarding equivalence class to which the packet is assigned.
		Thus the forwarding component performs a label swap at each hop to determine the next hop and finally when it reaches the last label switch, the Egress and tries to perform a label swap and a next hop is not available, the incoming label is ignored and the packet is forwarded using I P forwarding.
		Labels to routes were assigned by control procedures, which in turn distributed the labels among mu ltiplayer switches and created the forwarding tables, which were managed by proprietary IP-based protocol, not ATM forum protocols.
	www.cs.uml.edu /~rkothapa/paper1 (6428 words)

	MPLS (Multiprotocol Label Switching) (Linktionary term)
		The default MPLS label assignment and label-forwarding process starts with each label switching device learning about the network to which it is directly attached.
		Label 9 is assigned to 172.16 and label 10 is assigned to 129.10.
		The LSR looks up label 3 in its forwarding table and discovers that label 9 should be attached to the packet and that it should be forwarded out port 0.
	www.linktionary.com /m/mpls.html (1252 words)

	Tag Switching Protocols - TDP \| MPLS
		Protocol Label Switching (MPLS) is a set of procedures for augmenting network layer packets with "label stacks", thereby turning them into labeled packets.
		This protocol attaches labels to IP and IPv6 protocols in the network layer, after the data link layer headers, but before the network layer headers.
		This bit is set to one for the last entry in the label stack and zero for all other label stack entries.
	www.protocols.com /pbook/tag.htm (358 words)

	[No title]
		Recent proposals have extended the scope of Multiprotocol Label Switching (MPLS) Label Switched Paths (LSPs) to encompass point-to-multipoint (P2MP) LSPs.
		To avoid data duplication, backup labels (i.e., inner labels) are assigned by the Point of Local Repair (PLR) according to the RSVP-TE upstream label assignment procedure.
		To facilitate the establishment of Label Switched Paths (LSP) that would span multiple IGP areas in a given Autonomous System (AS), this document proposes a new optional label mapping procedure for the Label Distribution Protocol (LDP).
	www.ietf.org /ids.by.wg/mpls.html (1900 words)

	Cisco IOS Switching Services Configuration Guide, Release 12.1 - Configuring Multiprotocol Label Switching - Cisco ...
		The mechanism by which MPLS can be restricted, such that packets are label switched to only a subset of destinations.
		The appropriate label is placed on the packet with the IP precedence bits copied into every label entry in the MPLS header.
		On the Label Switch Controller (LSC), the TC-ATM ports on the controlled switch are represented as a new IOS interface type called extended Label ATM (XmplsATM).
	www.cisco.com /en/US/docs/ios/12_1/switch/configuration/guide/xcdtagc.html (3710 words)

	MPLS: Multiprotocol Label Switching Protocols Overview (RFC 3031 3032)
		There are several label distribution protocols used today, such as Label Distribution Protocol (LDP) or RSVP or piggybacked on routing protocols like border gateway protocol (BGP) and OSPF.
		High-speed switching of data is possible because the fixed-length labels are inserted at the very beginning of the packet or cell and can be used by hardware to switch packets quickly between links.
		b) the operation to be performed on the label stack before forwarding; this operation may be to replace the top label stack entry with another, or to pop an entry off the label stack, or to replace the top label stack entry and then to push one or more additional entries on the label stack.
	www.javvin.com /protocolMPLS.html (470 words)

	Has telecom's 'next big thing' arrived? - CNET News.com
		Hyped for years, technology known as multiprotocol label switching is finally hitting the mainstream amid growing demand for services that marry voice, video and data on a single network.
		The main advantage of label switching is that it allows routers to make forwarding decisions based on the contents of a simple label, rather than by performing a complex lookup based on a so-called destination IP address.
		Packets are forwarded along a label switch path where each router makes forwarding decisions based solely on the contents of the label.
	news.cnet.com /Has-telecoms-next-big-thing-arrived/2100-1037_3-5155033.html (1674 words)

	Multiprotocol label switching price quotes and free consultation!
		Multiprotocol label switching (MPLS) utilizes major advancements in technology to establish secure private communication channels, for the transfer of data, over shared networks, such as private intranets or the public internet.
		Multiprotocol label switching provides any-to-any connectivity over T1 or higher bandwidth.
		For multiple location networks, or two location networks which you know will increase in number of locations, multiprotocol label switching can be far more functional, and far less expensive than a network comprised of point-to-point lines.
	www.multiprotocol-label-switching.com (1070 words)

	Multiprotocol Label Switching
		Recently, many efforts and activities on multiprotocol label switching (MPLS) have already been initiated, which have impacted IP networks considerably.
		The switching technologies are entering IP networks and shaping their architecture day by day.
		Also, the label switching router (LSR) is a crucial topic for the next-generation router, attracting attention from switching and IP communities.
	www.comsoc.org /ci1/private/1999/dec/Guestkuo.html (764 words)

	IEC: On-Line Education: WPF: Generalized Multiprotocol Label Switching (GMPLS)
		The premise of multiprotocol label switching (MPLS) is to speed up packet forwarding and provide for traffic engineering in Internet protocol (IP) networks.
		To accomplish this, the connectionless operation of IP networks becomes more like a connection-oriented network where the path between the source and the destination is precalculated based on user specifics.
		The tables and the labels are used together to establish an end-to-end path called a label switched path (LSP).
	www.iec.org /online/tutorials/gmpls (484 words)

	MPLS (Multi Protocol Label Switching) (Site not responding. Last check: )
		The idea is to steer IP traffic onto a variety of routes instead of the single one discovered by an interior gateway protocol such as Border Gateway Protocol, to avoid congestion or failures, or to enable a particular class of service or guaranteed service level.
		MPLS switches and routers affix labels to packets based on their destination, type-of-service parameters, Virtual Private Network membership or other criteria.
		The MPLS switches and routers - dubbed label switch routers - assign each packet a label that corresponds to a particular path through the network.
	www.networkworld.com /details/483.html (742 words)

	What is Multiprotocol Label Switching? - a definition from Whatis.com - see also: MPLS
		- Multiprotocol Label Switching (MPLS) is a standards-approved technology for speeding up network traffic flow and making it easier to manage.
		MPLS involves setting up a specific path for a given sequence of packets, identified by a label put in each packet, thus saving the time needed for a router to look up the address to the next node to forward the packet to.
		MPLS is called multiprotocol because it works with the Internet Protocol (IP), Asynchronous Transport Mode (ATM), and frame relay network protocols.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci214350,00.html (256 words)

	Multiprotocol Label Switching (MPLS) over ATM without VC-merge [Multiprotocol Label Switching over ATM (MPLS over ...
		This document illustrates a Multiprotocol Label Switching (MPLS) network with ATM.
		Since VC-merge is not used, there is one VC allocated per route as determined by the prefix in the routing table.
		This setup uses one ATM switch that is used as the label switch router (LSR).
	www.cisco.com /en/US/tech/tk436/tk798/technologies_configuration_example09186a0080093d4f.shtml (754 words)

	GMPLS: Generalized Multiprotocol Label Switching \| NetworkDictionary
		Generalized Multiprotocol Label Switching (GMPLS) enhances MPLS architecture by the complete separation of the control and data planes of various networking layers.
		FDM paths, where electromagnetic frequency is the label (light waves).
		Space division multiplexed paths, where the label indicates the physical position of data (Photonic Cross-connect).
	www.networkdictionary.com /protocols/gmpls.php?PHPSESSID=745111d8eba6051684f6f4b039887bac (337 words)

	Multiprotocol Label Switching
		Multiprotocol label switching (MPLS) is one such solution that has been standardized by the Internet Engineering Task Force (IETF).
		Ingress edge label switching router (LSR) receives a packet, performs layer-3 value-added services, and labels the packets
		At the same time, label management functions need to be implemented in software.
	www.altera.com /end-markets/wireline/mpls/wil-mpls.html (623 words)

	What is Multiprotocol Label Switching? - a definition from Whatis.com - see also: MPLS
		- Multiprotocol Label Switching (MPLS) is a standards-approved technology for speeding up network traffic flow and making it easier to manage.
		MPLS involves setting up a specific path for a given sequence of packets, identified by a label put in each packet, thus saving the time needed for a router to look up the address to the next node to forward the packet to.
		MPLS is called multiprotocol because it works with the Internet Protocol (IP), Asynchronous Transport Mode (ATM), and frame relay network protocols.
	searchtelecom.techtarget.com /sDefinition/0,,sid103_gci214350,00.html (336 words)

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