bgp routing decision

With the development of the Internet in China, the connection between ISP service providers and Internet is also changing. On a network connection, from a single connection to the Internet via multiple telecommunications companies, in terms of routing protocols used, from the use of static routing protocols to the use of BGP (Border Gateway Protocol). How does th

Topology experiment diagram: 650) this. width = 650; "src =" 51cto.com/uploads/allianz 111103/134944bq-0.jpg "title =" BGP backdoor routing "height =" 407 "width =" 606 "/> what is BGP backdoor routing? What is its function? Let's take a look at the brief Network Configuration: R1 S0/0: ip add 12.1.1.1 255.255.255.0 S0

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

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

Networking requirements:1. AS65000 boundary network segment release: RT1 and RT2 re-release direct connection route to OSPF (metric 1000 type 1)2. BGP Configuration Requirements:No synchronizationNo auto-summary IBGP uses LOOPBACK to establish a neighbor, and the next hop points to itself3. RT1 and RT2 publish a summary route of AS65000 to BGP: 10.0.0.0/16 and 10.3.0.0/16.4. RT5 publishes a summary route fo

3IP Route 1.1.1.1 255.255.255.255 10.1.12.1 Track 3!!!Access-list 1 Permit 192.168.2.0 0.0.0.255Access-list 2 Permit 192.168.1.0 0.0.0.255R1 down one of the interfacesR2 Tipsr2#*mar 1 02:34:50.951:%bgp-5-adjchange:neighbor 10.1.12.1 down BGP Notification sentr2#*mar 1 02:34:50.955:%bgp-3-notification:sent to neighbor 10.1.12.1 4/0 (hold time expired) 0 bytesr2#r

Design of the BGP Practice Policy Routing distribution requirements for the two RoutersR1 and R2 are connected by two lines. BGP is used. R1 has two groups of routes, 192.168.1.0/24 and 192.168.2.0/24. When both lines are connected, the traffic of the two groups of routes is distributed and balanced on the two lines. When any one of them is disconnected, only tra

BGP routing load balancing fault caseNetwork Architecture 1. Topology: the actual network structure is simplified considering the privacy of the company's network and a clearer description of fault phenomena. 2. network planning and data Configuration Overview: ◆ ASR9K establishes IBGP neighbor relationships with two n7ks Based on the interconnected addresses respectively; ◆ ASR9K is connected to the Cisco

[Experimental environment] liehuo.net C3640-IK9O3S-M Version 12.4 (10) liehuo.net [Tutorial Objective] veryhuo.com Uses Full-mesh to resolve BGP routing black hole liehuo.net [Experiment topology] liehuo.net Liehuo.net [Experiment description] lie # fire # Network BGP distribution. R2, R3, and R4 run the OSPF protocol. The objective is to enable 1.1.1.1

Before we start, let's start by thinking about several questions. What is a route? What are OSPF and BGP? What are their purposes? What are their application scenarios? What are the advantages of the two routing protocols in OpenBSD compared with hardware routers such as Cisco/Huawei? How to Use OpenBSD to reduce network costs? 1. What is a route? Simply put, a route is like a sign at a crossroads, a