understanding bgp

What is the next hop of a BGP third party? Compare the next hop of the route from which the router sends the route with the outgoing interface. If the route is in the same CIDR Block, the next hop of the route remains unchanged. Let's take a look at the following example: www.2cto.com R1, R2, and R3 routers. The interface IP addresses are 10.1.1.1/10.1.1.2 and 10.1.1.3 respectively. R1 and R2 run IBGP, R1 and R3 run EBGP, there is a loopback2 on R2 an

Large Guizhou Network Fuzhou BGP high-anti-server telecom 125.77.30.*, Unicom 43.224.12.*High-anti-server, games, chess, bidding, finance and other industries preferred.Annual pay one months, the monthly renewal fee does not increase priceL5630*2/16G memory/120 SSD HDD/G port sharing 160G defenseL5630*2/16G memory/120 SSD HDD/G port sharing 240G defenseL5630*2/16G memory/120 SSD HDD/G port sharing 480G defenseBig Guizhou Network (Big Shield Cloud)Cons

Bgp-community: Indirect influence route routing!such as: 100 of the network left AS100, carry attributes away!Configuration of the AR1:BGP 100Peer 2.2.2.2 As-number 200Peer 2.2.2.2 Ebgp-max-hop 255Peer 2.2.2.2 Connect-interface LoopBack0Peer 3.3.3.3 As-number 200Peer 3.3.3.3 Ebgp-max-hop 255Peer 3.3.3.3 Connect-interface LoopBack0Group AS200 InternalIpv4-family UnicastUndo SynchronizationNetwork 100.1.1.0 2

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Experiment topology: R1 configuration: R2 configuration: R3 configuration: Verify: From the BGP general rule 1.1.1.0/24 's next hop should be R2 (123.1.1.2) but it has automatically changed to R1 123.1.1.1. This is the third party's next jump. This is a change in the control level. Route redirection is a change in the forwarding of the data plane, and the next hop does not change. (Refer to My route redirection experiment) This arti

Huawei's configuration: As shown in the following illustration, for the purpose of understanding the IP address (C class address/30 mask) that is used to make the host name connected between them. The blue area is Area1, the green area is Area2, and they are in ISIS's agreement. R7 and R8 are also doing ISIS, but not to R3 and R6 (R3 and R7, R6 and R8 to run EBGP between them) The following command: 0 0 means never time out, no matter when the in

(1) preliminary understanding and understanding of Maven; preliminary understanding of maven Apache Maven is a comprehensive tool for software project management. Based on the concept of the project Object Model (POM), it provides methods to help manage building, documents, reports, dependencies, and releases, Maven simplifies and standardizes the project constru

Deep understanding of CSS positioning full understanding of relative and absolute positioning of CSS positioning, deep understanding of css In fact, both the standard stream and floating stream are very understandable, that is, positioning is not very easy to understand, especially relative and absolute positioning. Many of the first students are hard to distingu

^ Flags The beginning of an expression, and if this character is not used, there is no starting limit for default. For example: When using the permit ^254, the meaning is that the route that is connected to the local as is 254 is allowed. If you use

If you forget it, remember 1. Download the original data package of .bz2from http://archive.routeviews.org/and decompress Bzip2-D xxx.bz2 2. Download the zebra-dump-parser software to convert data into ASCII code. Http://www.linux.it /~

copy of data is sent. The host or router can use IGMP to tell other routers that they are interested and then join multicast groups. Dense mode protocols implement flood and pruning, while Sparse Mode uses RP (reverse path) to avoid unnecessary floodinNetwork basics lecture 18: Understanding iBGP Routing Protocol Network basics lecture 17: BGP routing protocol preliminary Network basics lecture 16: Interne

Deep understanding of OOP (2): Polymorphism and inheritance (inheritance), deep understanding of oop This article is the second article of OOP, mainly about inheritance. Deep understanding of OOP (1): Polymorphism and inheritance (polymorphism during initial binding and compilation) Deep understanding of OOP (2): Po

Deep understanding of OOP (first day): Polymorphism and inheritance (initial binding and compilation polymorphism), deep understanding of oop In this series, we mainly use the popular OOP blogs on CodeProject to provide in-depth and simple presentation of OOP.As a master of software design or a cainiao, architecture design requires many restructures and trade-offs to facilitate the healthy construction of t

An in-depth understanding of the sequence of the javascript series, an in-depth understanding of javascript Starting from today, the bloggers will conduct in-depth understanding and analysis of javascript and organize some of their learned knowledge into blog posts for everyone to learn and discuss together. If you have any questions or suggestions, contact the

[An in-depth understanding of javascript prototype and closure series] It took half a month to complete the draft, seek recommendations, and gain an in-depth understanding of javascript As you can see from the following directory, this series has 16 articles, plus two supplemented articles, a total of 18 articles. It was written for half a month and started in December September 17. When every article is up

In the previous article, we discussed what a schema is. In fact, these basic concepts are very important for architecture, and most people think they are aware of the concepts they are accustomed to every day, but in fact they are subconscious and not active. For example, "What is a table?" "When I do training, I often take this example to ask you, answer all sorts of strange things." This actually led to the structure of the time, the different roles of communication will be a lot of problems,

Rpm-i (or--install) options file1.rpm ... filen.rpm Parameters: file1.rpm ... filen.rpm the name of the RPM package that will be installed Detailed options: -H (or--hash) output hash mark (' # ') at installation The--test is only tested for

Understanding of control inversion in asp.net, and understanding of asp.net Inversion IOC is interpreted as: "Inversion of control is a common characteristic of frameworks, so saying that these lightweight containers are special because they use inversion of control is like saying my car is special because it has wheels." I want to explain this concept one by one to facilitate my

Second, understanding database three paradigm, understanding database paradigm Understanding the database paradigm is of great help to design a rational database. Based on my understanding of the database paradigm and specific examples, this article attempts to understand the three paradigm of the database in plain and

This is the third article in the Business Guide series of the Project Manager. (1) preface and project nature; (2) Recognition of responsibilities; (3) Understanding of customers; (4) Understanding of negotiations; (5) Understanding of project progress; (6) Understanding of remittance; (7: push the project to an unbeat