bgp protocol explained

BGP is a dynamic routing Discovery protocol between autonomous systems, and its basic function is to automatically exchange loop-free routing information between autonomous systems. As with OSPF and RIP protocols that operate within autonomous zones, BGP is a class of EGP (Edge Gateway Protocol)

The BGP protocol runs on top of TCP and, as a result, it inherits all vulnerabilities of TCP connections. For example, in a BGP session, an attacker could impersonate a legitimate BGP neighbor, and then persuade the BGP router on the other end to share routing information to

The BGP protocol is one of the routing protocols. Therefore, we use it for many purposes. The most important reason is that we use the BGP protocol to mitigate the depletion of IP address barrier space. Why can it do this? Next we will introduce this agreement in detail. 1. Introduction

The BGP protocol in the routing protocol is a type of protocol we will analyze for you below. As this part of the content is very important, we will mainly introduce it in two parts: first, the introduction of the concept above, and then a brief analysis of its topology structure. 1. Introduction

Dynamic routing protocols are divided into Internal Gateway Protocol (IGP) and External Gateway Protocol (EGP), depending on whether they are used within an autonomous domain. The autonomous domain here refers to a network with a unified management authority and a unified routing policy. The routing protocol adopted within the autonomous domain is called the Inte

Key Issues 1) How does an ACL match route entries with the same subnet and different masks? How do I match entries with the same mask and different subnets? 2) Why does a summary route cause a tumble of BGP peers? 3) Why does the acl fail to match the route entry when attribite-map is used? 4) How to Use advertise-map, suppress-map, unsuppress-map, attribute-map, and route-map routing diagrams? Instance. 5) What are the two routing filtering solutions

1. Route Selection Protocol The core of routing protocol is routing algorithm, the router uses routing protocol to generate routing table, which can realize the "best" path of the network packets. 2. Classification of routing protocols Routing protocol is divided into internal Gateway

In the network structure, we have been paying attention to their deployment and optimization. As the network pressure increases, we have put forward higher requirements for some hardware and protocols. Now, we will focus on the deployment of BGP routing protocols. In general, the BGP routing protocol deployed in the domain should consider the following: 1. Actua

BGP protocol-neighbor PMTU checks that the BGP protocol runs on TCP, so the TCP parameter settings will affect the performance of BGP. When the number of routes is small, the adjustment of TCP Parameters may not affect the BGP per

A key problem statement (a) How does the ACL match the same subnet and the different mask routing entries? How do I match the same mask, different entries for subnets? (ii) Why does a summary route cause the rollover of a BGP neighbor? (iii) Why does the ACL not match the route entry when using Attribite-map? (d) How to use Advertise-map,suppress-map,unsuppress-map,attribute-map and Route-map five-way map? Give an example. (v) The two schemes of

In the previous article, we introduced MPLS technology. Many protocols have been applied in this Multi-Protocol Label technology. Today we will introduce the BGP protocol. Let's see how BGP works in MPLS. The specific application of the BGP

C through the BGP learning, will generate a routing table based on the shortest path algorithm to select the path of a more optimal service-side address assume a more excellent New route Table 10.0.0.1--192.168.1.3. In the process of use, the BGP network will continue to send each other keeplive packets if C to send a packet result of failure is a down, then C will delete the route table 10.0.0.1--192.168.

Principles and configurations of the BGP protocol for HCNP learning notes 3-route AggregationThe BGP protocol can use commands to aggregate specific routes into an aggregation route. The Routing aggregation principle adopts the longest matching method with the same mask. Route aggregation can reduce the size of the rou

generate the most reasonable path (merge ). (The basic logic of RIP is: if A is 6 away from B and I am 1 Away From A, the distance from A to B is 7) For technical reasons (looping hops), rip considers that IP addresses over 15 cannot arrive. Therefore, rip is more used in the Internet (such as the entire China Telecom Network ). Such an internet part often belongs to the same ISP or has the same management organization, so it is called an autonomous system (as, autonomous system ). Hosts and

different HTTP servers.6, Other: In order to improve the user's performance when using the browser, the modern browser also supports concurrent access, browse a Web page while establishing multiple connections, to quickly obtain a number of icons on a Web page, so that the entire page can be faster to complete the transmission.This continuous connection is provided in HTTP1.1, while the next-generation HTTP protocol: Http-ng adds support for session