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P Router
In Multiprotocol 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 is typically connected to one or more PE routers. Here's one scenario: A customer who has facilities in LA and Atlanta wants to connect these sites over an MPLS VPN provided by AT&T. To do this, the customer would purchase a link from the on-site CE router to the PE router in AT&T's central office in LA and would also do the same thing in Atlanta. The PE routers would connect over AT&T's backbone routers (P routers) to enable the two CE routers in LA and Atlanta to communicate over the MPLS network. See also * Customer edge router * Provider edge router A provider edge router (PE router) is a router between one network service provider's area and areas administered by other network providers. A network provider is usually an Internet service provider as well (or only that). The term ''PE rout ... Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiprotocol Label Switching
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 identify established paths between endpoints. MPLS can encapsulate packets of various network protocols, hence the ''multiprotocol'' component of the name. MPLS supports a range of access technologies, including T1/ E1, ATM, Frame Relay, and DSL. Role and functioning In an MPLS network, labels are assigned to data packets. Packet-forwarding decisions are made solely on the contents of this label, without the need to examine the packet itself. This allows one to create end-to-end circuits across any type of transport medium, using any protocol. The primary benefit is to eliminate dependence on a particular OSI model data link layer (layer 2) technology, and eliminate the need for multiple layer-2 networks to satisfy different types of tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Label Switch Router
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 identify established paths between endpoints. MPLS can encapsulate packets of various network protocols, hence the ''multiprotocol'' component of the name. MPLS supports a range of access technologies, including T1/ E1, ATM, Frame Relay, and DSL. Role and functioning In an MPLS network, labels are assigned to data packets. Packet-forwarding decisions are made solely on the contents of this label, without the need to examine the packet itself. This allows one to create end-to-end circuits across any type of transport medium, using any protocol. The primary benefit is to eliminate dependence on a particular OSI model data link layer (layer 2) technology, and eliminate the need for multiple layer-2 networks to satisfy different types of traffic. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IETF
The Internet Engineering Task Force (IETF) is a standards organization for the Internet standard, Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster or requirements and all its participants are volunteers. Their work is usually funded by employers or other sponsors. The IETF was initially supported by the federal government of the United States but since 1993 has operated under the auspices of the Internet Society, a non-profit organization with local chapters around the world. Organization There is no membership in the IETF. Anyone can participate by signing up to a working group mailing list, or registering for an IETF meeting. The IETF operates in a bottom-up task creation mode, largely driven by working groups. Each working group normally has appointed two co-chairs (occasionally three); a charter that describes its focus; and what it is expected to produce, and when. It is open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provider Edge Router
A provider edge router (PE router) is a router between one network service provider's area and areas administered by other network providers. A network provider is usually an Internet service provider as well (or only that). The term ''PE router'' covers equipment capable of a broad range of routing protocols, notably: *Border Gateway Protocol (BGP) (PE to PE or PE to CE communication) *Open Shortest Path First (OSPF) (PE to CE router communication) *Multiprotocol Label Switching 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 iden ... (MPLS) (CE to PE ( ingress eLSR) or PE to CE ( egress eLSR), also PE to P (and visa versa)) PE routers do not need to be aware of what kind of traffic is coming from the provider's network, as opposed to a P router that functions as a transit withi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MPLS VPN
{{MPLS diagram MPLS VPN is a family of methods for using Multiprotocol Label Switching (MPLS) to create virtual private networks (VPNs). MPLS VPN is a flexible method to transport and route several types of network traffic using an MPLS backbone. There are three types of MPLS VPNs deployed in networks today: 1. Point-to-point ( Pseudowire) 2. Layer 2 (VPLS) 3. Layer 3 (VPRN) Point-to-point (pseudowire) Point-to-point MPLS VPNs employ VLL ( virtual leased lines) for providing Layer 2 point-to-point connectivity between two sites. Ethernet, TDM, and ATM frames can be encapsulated within these VLLs. Some examples of how point-to-point VPNs might be used by utilities include: * encapsulating TDM T1 circuits attached to Remote Terminal Units * forwarding non-routed DNP3 traffic across the backbone network to the SCADA master controller. Layer 2 VPN (VPLS) Layer 2 MPLS VPNs, or VPLS (virtual private LAN service), offers a “switch in the cloud” style service. VPLS provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Customer Edge Router
The customer edge (CE) router generally refers to the router at the customer premises that is interconnected with the provider edge (PE) router of a service provider's IP/MPLS network. The CE router may peer with the PE router and exchanges routes with the corresponding VRF inside the PE for L3VPN services, or it may be connected to utilise L2VPN service provided by the provider. The routing protocol used could be static or dynamic (an interior gateway protocol like OSPF or an exterior gateway protocol like BGP). The customer edge router can either be owned by the customer or service provider. Residential broadband In the case of residential broadband internet services, the service provider or ISP, will often use MPLS internally to transport the broadband customer's layer 2 traffic over the MPLS core, back to their BNGs. In this case, the customer's router can be referred to as a ''customer premises equipment'' (''CPE'') ''device'', where CPE is typically a layer 3 rout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provider Edge Router
A provider edge router (PE router) is a router between one network service provider's area and areas administered by other network providers. A network provider is usually an Internet service provider as well (or only that). The term ''PE router'' covers equipment capable of a broad range of routing protocols, notably: *Border Gateway Protocol (BGP) (PE to PE or PE to CE communication) *Open Shortest Path First (OSPF) (PE to CE router communication) *Multiprotocol Label Switching 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 iden ... (MPLS) (CE to PE ( ingress eLSR) or PE to CE ( egress eLSR), also PE to P (and visa versa)) PE routers do not need to be aware of what kind of traffic is coming from the provider's network, as opposed to a P router that functions as a transit withi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cisco Press
Cisco Press is a publishing alliance between Cisco Systems and Pearson Education Pearson Education, known since 2011 as simply Pearson, is the educational publishing and services subsidiary of the international corporation Pearson plc. The subsidiary was formed in 1998, when Pearson plc acquired Simon & Schuster's educatio ..., the world's largest education publishing and technology company which is part of Pearson plc. Cisco Press distributes its titles through traditional resellers as well as through the O'Reilly Online Learning e-reference service. Cisco Press allows Cisco Systems to publish books about Cisco networking technology, as well as certification study materials. References External links * Book publishing companies based in Indiana Pearson plc Publishing companies established in 1996 {{Ict-company-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
