bgp routing protocol pdf

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

Summary of configuration formats of dynamic routing (ripV2, ospf, VPN, bgp, IS-IS)1. r12002router rip enable rip Protocol no atuo-summary disable automatic summary of version 2 2 network x mask x declaring the network segment (the subnet mask is a positive mask, mask can be disabled. 2. Enable the ospf protocol for osp

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

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

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. Rou

The Border Gateway Protocol, also known as BGP, is mainly used to connect to the routing protocol of independent systems on the Internet, it is an enhanced, comprehensive, and scalable protocol developed by the Internet Engineering Task Group. 1. routes include two basic act

This article describes the basic working principles of routers in TCP/IP networks, introduces several functions of IP routers, and provides Static Routing and dynamic routing protocols, as well as the concept of the internal gateway protocol and the external gateway protocol, and briefly introduces the most common RIP,

6th. TCP/IP routing protocol fault handlingFirst, the default gatewayWhen the destination address of the package is not in the router's routing table, such as when the router is configured with a default gateway, it is forwarded to the default gateway or discarded.show IP route; View the default gateway for Cisco routersSecond, static and dynamic routingThird, pr

to connect other lower-layer areas Non-trunk zone: The vro inside the vro only knows the complete network topology of the local region, but does not know the network topology of other regions. At least one regional border router is required Five grouping types: Greeting (Hello) Group Database description Group Link State request Group Link State update group, which uses the flooding method to update the link status of the entire netwo

region is composed of one or more subnets connected to each other and is connected to the main region. In addition, the OSPF protocol supports a variable length subnet latency (vlsm) that provides network address space conversion and bandwidth-based computing. External Routing Protocol The external routing

relationship, and BGP uses TCP to establish the adjacent relationship.Show commands related to BGP:Show ip bgp; displays the Routes learned by BGPShow ip bgp network; displays the BGP information of a specific networkShow IP neighbors; displays BGP neighbor InformationShow

The use of routes greatly expands the performance of the network. Next, we will analyze some characteristics of the IBGP routing protocol. Through the introduction of this article, we can understand the routing features in this regard. With the development of the network, ISP needs to connect to the INTERNET through multiple lines through different network provid

CIDR (classless Inter-Domain Routing) address Resolution. This means that this Protocol is only a domain-like protocol. You cannot divide the 24-mask network into smaller units, r12001 also uses broadcast to send messages. This means that the host cannot ignore RIP broadcasts. Remember that each host in the broadcast domain will receive an interruption each time

:24.1.1.2 Relay IP out-interface:gigabitethernet0/0/0 Original nexthop:2.2. 2.2 Qos information:0x0 As-path, Origin IGP, MED 0, Localpref, Pref-val 0, valid, internal, pre 255, IGP cost 1, Not preferred for PreVal (R4 goes to 1.1.1.0/24 route, does not walk R2 2.2.2.2 because the preference value is not optimal) not advertised to any peer yet Experiment two: Let R4 choose R3 as the next hop by protocol preference, and go to 10.1.1.0/24 and 100.1.1.0

route table of "inter-network. The routing action includes two basic items: path finding and forwarding. The routing algorithm is used to determine the optimal path to the destination. Because different routing protocols and routing algorithms are involved, it is relatively complicated. To determine the optimal route,

We all know that the function of the router is primarily addressing and forwarding addressing is the routing algorithm that is implemented by routing algorithms to add the different information collected to the routing table, and forwarding is through routing tables for mutual communication between routers updating and

Gateway Protocol (IGP) and the external Gateway Protocol (BGP) based on whether it is used in an autonomous system. Common internal gateway protocols include RIP and OSPF, external gateway protocol has BGP, BGP-4, here mainly tal

basic items: path finding and forwarding. The routing algorithm is used to determine the optimal path to the destination. Because different routing protocols and routing algorithms are involved, it is relatively complicated. To determine the optimal route, the routing algorithm must start and maintain the route table

differentiate various operations to be implemented by packets. Command 1 indicates part or all of the request's route selection information, and command 2 indicates the response, which contains one or more RTE.A vro or host can send a request command to request routing information from another vro. The router uses the response command to answer the question. The version field contains the current version number of the

(External Gateway Protocol) and the Border Gateway Protocol BGP (Border Gateway Protocol). BGP is a newer Protocol and is gradually replacing EGP. Static Routing