BGP (Border Gateway Routing Protocol) is a standardized exterior gateway protocol designed to
exchange routing and reachability information between autonomous systems (AS) on the Internet. The
Border Gateway Protocol makes routing decisions based on paths, network policies or rule-sets
configured by a network administrator, and are involved in making core routing decisions.
BGP is a very robust and scalable routing protocol, as evidenced by the fact that BGP is the routing
protocol employed on the Internet.
Border Gateway Protocol (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet.
BGP (Border Gateway Routing Protocol) is a standardized exterior gateway protocol designed to
exchange routing and reachability information between autonomous systems (AS) on the Internet. The
Border Gateway Protocol makes routing decisions based on paths, network policies or rule-sets
configured by a network administrator, and are involved in making core routing decisions.
BGP is a very robust and scalable routing protocol, as evidenced by the fact that BGP is the routing
protocol employed on the Internet.
Border Gateway Protocol (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet.
Topic: Border Gateway Protocol (BGP)
Outline:
# Introduction
# History
# Current version
# Uses
# Operation
# BGP infrastructure
# Problems
# Success
Introduction
BGP: The Border Gateway Protocol (BGP) is the protocol used throughout the Internet to exchange routing information between networks. It is the language spoken by routers on the Internet to determine how packets can be sent from one router to another to reach their final destination. BGP has worked extremely well and continues to be protocol that makes the Internet work.
History
Date Text
1994-08-15 Concluded group
1992-05-30 Changed milestone "Post the specfication of BGP 4 as an Internet-Draft.", resolved as "Done"
1991-08-30 Changed milestone "Post an Internet-Draft specifying multicast extensions to BGP.", resolved as "Done"
1990-05-01 Changed milestone "Develop a MIB for BGP Version 3.", resolved as "Done"
1990-05-01 Changed milestone "Complete development of Version 2 of the Border Gateway Protocol (BGP).", resolved as "Done"
1989-01-01 Started group
Current version
The current version of BGP is version 4 (BGP4) codified in RFC 4271 since 2006. Early versions of the protocol are widely considered obsolete and are rarely supported. RFC 4271, which went through more than 20 drafts, is based on the earlier RFC 1771 version 4. The RFC 4271 version corrected a number of errors, clarified ambiguities and brought the RFC much closer to industry practices. Version 4 of BGP has been in use on the Internet since 1994. The major enhancement in version 4 was support for Classless Inter-Domain Routing and use of route aggregation to decrease the size of routing.
Uses
Most Internet service providers must use BGP to establish routing between one another (especially if they are multihomed). Compare this with Signaling System 7(SS7), which is the inter-provider core call setup protocol on the PSTN.
Very large private IP networks use BGP internally. An example would be the joining of a number of large OSPE (Open Shortest Path First) networks where OSPF by itself would not scale to size. Another reason to use BGP is multihoming a network for better redundancy, either to multiple access points of a single ISP or to multiple ISPs.
Operation
When BGP runs between two peers in the same autonomous system (AS), it is referred to as Internal BGP (iBGP or Interior Border Gateway Protocol). When it runs between different autonomous systems, it is called External BGP (EBGP or Exterior Border Gateway Protocol).
Finite-state machines
BGP state machine
In order to make decisions in its operations with peers, a BGP peer uses a simple finite state machine (FSM) that consists of six states: Idle; Connect; Active; OpenSent; OpenConfirm; and Established. For each peer-to-peer session, a BGP implementation maintains a state variable that tracks which of these six states the session is in. The BGP defines the messages that each peer should exc
Using BGP To Manage Dual Internet ConnectionsRowell Dionicio
Meredith Rose, CCIE# 4617, of Sigmanet presents on the topic of dual-homing BGP connections. Presentation for San Diego Cisco User Group hosted at Infracore.
This Presentation was made by Ali Ibrahim and Aun Haider for the Class Activity purpose. We do hope that this Presentation may assist those students who are undergoing networking studies, presentation or projects in a fruitful and positive manner.
In this webinar, we cover how Border Gateway Protocol works. Starting from key concepts, you'll learn about Autonomous Systems, the BGP protocol, AS Path, learning and advertising routes, RIBs and route selection. See the webinar recording at https://www.thousandeyes.com/webinars/how-bgp-works
this slide contains basic and advanced concept about BGP routing protocol, according to the latest version of Cisco books and i taught it at IRAN TIC company.
Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance-vector routing protocol that is used on a computer network for automating routing decisions and configuration.
Open Shortest Path First (OSPF) || 2020 || Ser-2Nutan Singh
Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS). It is defined as OSPF Version 2 in RFC 2328 (1998) for IPv4.
This slide contains concept about MPLS_VPNs specially L3_VPN protocol, according to the latest version of Cisco books(SP and R&S) and i taught it at IRAN TIC company.
In the next slide, i prepare title about MPLS L3_VPN Services and VPLS (MPLS L2_VPN)
Topic: Border Gateway Protocol (BGP)
Outline:
# Introduction
# History
# Current version
# Uses
# Operation
# BGP infrastructure
# Problems
# Success
Introduction
BGP: The Border Gateway Protocol (BGP) is the protocol used throughout the Internet to exchange routing information between networks. It is the language spoken by routers on the Internet to determine how packets can be sent from one router to another to reach their final destination. BGP has worked extremely well and continues to be protocol that makes the Internet work.
History
Date Text
1994-08-15 Concluded group
1992-05-30 Changed milestone "Post the specfication of BGP 4 as an Internet-Draft.", resolved as "Done"
1991-08-30 Changed milestone "Post an Internet-Draft specifying multicast extensions to BGP.", resolved as "Done"
1990-05-01 Changed milestone "Develop a MIB for BGP Version 3.", resolved as "Done"
1990-05-01 Changed milestone "Complete development of Version 2 of the Border Gateway Protocol (BGP).", resolved as "Done"
1989-01-01 Started group
Current version
The current version of BGP is version 4 (BGP4) codified in RFC 4271 since 2006. Early versions of the protocol are widely considered obsolete and are rarely supported. RFC 4271, which went through more than 20 drafts, is based on the earlier RFC 1771 version 4. The RFC 4271 version corrected a number of errors, clarified ambiguities and brought the RFC much closer to industry practices. Version 4 of BGP has been in use on the Internet since 1994. The major enhancement in version 4 was support for Classless Inter-Domain Routing and use of route aggregation to decrease the size of routing.
Uses
Most Internet service providers must use BGP to establish routing between one another (especially if they are multihomed). Compare this with Signaling System 7(SS7), which is the inter-provider core call setup protocol on the PSTN.
Very large private IP networks use BGP internally. An example would be the joining of a number of large OSPE (Open Shortest Path First) networks where OSPF by itself would not scale to size. Another reason to use BGP is multihoming a network for better redundancy, either to multiple access points of a single ISP or to multiple ISPs.
Operation
When BGP runs between two peers in the same autonomous system (AS), it is referred to as Internal BGP (iBGP or Interior Border Gateway Protocol). When it runs between different autonomous systems, it is called External BGP (EBGP or Exterior Border Gateway Protocol).
Finite-state machines
BGP state machine
In order to make decisions in its operations with peers, a BGP peer uses a simple finite state machine (FSM) that consists of six states: Idle; Connect; Active; OpenSent; OpenConfirm; and Established. For each peer-to-peer session, a BGP implementation maintains a state variable that tracks which of these six states the session is in. The BGP defines the messages that each peer should exc
Using BGP To Manage Dual Internet ConnectionsRowell Dionicio
Meredith Rose, CCIE# 4617, of Sigmanet presents on the topic of dual-homing BGP connections. Presentation for San Diego Cisco User Group hosted at Infracore.
This Presentation was made by Ali Ibrahim and Aun Haider for the Class Activity purpose. We do hope that this Presentation may assist those students who are undergoing networking studies, presentation or projects in a fruitful and positive manner.
In this webinar, we cover how Border Gateway Protocol works. Starting from key concepts, you'll learn about Autonomous Systems, the BGP protocol, AS Path, learning and advertising routes, RIBs and route selection. See the webinar recording at https://www.thousandeyes.com/webinars/how-bgp-works
this slide contains basic and advanced concept about BGP routing protocol, according to the latest version of Cisco books and i taught it at IRAN TIC company.
Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance-vector routing protocol that is used on a computer network for automating routing decisions and configuration.
Open Shortest Path First (OSPF) || 2020 || Ser-2Nutan Singh
Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS). It is defined as OSPF Version 2 in RFC 2328 (1998) for IPv4.
This slide contains concept about MPLS_VPNs specially L3_VPN protocol, according to the latest version of Cisco books(SP and R&S) and i taught it at IRAN TIC company.
In the next slide, i prepare title about MPLS L3_VPN Services and VPLS (MPLS L2_VPN)
BGP Traffic Engineering with SDN Controller, by Shaowen Ma.
A presentation given at APRICOT 2016’s Software Defined Networking session on 24 February 2016.
For enterprise network engineers, implementing BGP can be an intimidating task. This presentation was given to address common architectures for internet and MPLS BGP usage, along with best practices.
Велосипед уже изобретен. Что умеют промышленные СХД? / Антон Жбанков (Nutanix)Ontico
Зачем мы каждый раз изобретаем велосипед, только потому что можем? Корпоративные СХД существуют более 25 лет и умеют очень многое.
Защита данных, качество обслуживания, многоуровневое хранение и кэширование на флэш-памяти. Система хранения данных - это не только гигабайт по минимальной цене, но так же и гарантированная производительность и отказоустойчивость.
Вы узнаете, как можно обеспечить своим данным высокую степень защиты, значительно сократив время реализации проекта. Или, наоборот, убедитесь в том, что СХД корпоративного класса вашему проекту не подходят.
A presentation to help new network operators plan a project to improve their network traffic management. Useful for inbound and outbound heavy networks. Lists the things you need to do to reach routing and peering nirvana.
Overview of the MPLS backbone transmission technology.
MPLS (MultiProtocol Layer Switching) is a layer 2.5 technology that combines the virtues of IP routing and fast layer 2 packet switching.
IP packet forwarding is not suited for high-speed forwarding due to the need to evaluate multiple routes for each IP packet in order to find the optimal route, i.e. the route with the longest prefix match.
However, Internet Protocol routing provides global reachability through the IP address and through IP routing protocols like BGP or OSPF.
Layer 2 packet switching has complementary characteristics in that it does not provide global reachability through globally unique addresses but allows fast packet forwarding in hardware through the use of small and direct layer 2 lookup addresses.
MPLS combines IP routing and layer 2 switching by establishing layer 2 forwarding paths based on routes received through IP routing protocols like BGP or OSPF.
Thus the control plane of an MPLS capable device establishes layer 2 forwarding paths while the data plane then performs packet forwarding, often in hardware.
MPLS is not a layer 2 technology itself, i.e. it does not define a layer 2 protocol but rather makes use of existing layer 2 technologies like Ethernet, ATM or Frame Relay.