bgp

. Each routing protocol is assigned a level of trust from high to low reliability. This level of trust is called the Management Distance. For the routing information from two different routing protocols to one destination, the router first determines which Protocol to trust based on the Management Distance.5. How to configure redistribution? Before route redistribution, you must first:1) decide where to add a new protocol.2) determine the border router ASBR of the autonomous system ).3) decide w

problems occurred during the project are solved? specific technologies include OSPF, VRRP, and VLAN tag, all questions are in-depth. 28. Is there a routing loop in the OSPF routing protocol? How to solve the routing loop? How to teach non-network industry) when users encounter OSPF networks, OSPF routers cannot form troubleshooting methods for neighbors.1) The OSPF autonomous system has no internal routing loops, but external routing may have loops.2) how to prevent external routes and avoid d

trying to solve the network bottleneck, hoping to realize the north-South fast interconnection.At present, the bottleneck problem of telecom and netcom can be mainly caused by human factors, and only by increasing cost or using technology to remedy, some IDC providers put forward "dual line", intelligent domain name DNS and CDN scheme respectively. The "dual-line" solution also includes dual-line single-IP routing solutions and dual-line dual-IP solutions. The DNS scheme is based on the domain

mechanism to identify these VPNV4 messages and inject vrf,rt came into being. The function of RT is to control the transmission direction of the message. Rd can have only one, and RT may be multiple. MP-BGP: The ordinary IGP protocol can only carry IPV4 messages, obviously it is not enough, because we already know that need a protocol to host the VPN message, perhaps in other areas also need to host the IPV6 message, MP-

route of R1 to R2 (Border1 ). r6 (IPS2) announces a 32-ring route of R6 to R5 (Border2 ). core1 and Core2 do not run the BGP protocol. based on the BGP principle, R2 learns an EBGP route from R1 and passes it to the IBGP neighbor R5. R5. This IBGP route is passed to the EBGP neighbor R6. vice versa.According to the BGP principle, Core1 and Core2 do not run

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 providers to ensure network reliability. At this time, BGP is truly useful. In this case, the ne

Prefval: Huawei Private, only locally meaningful, will not be updated to the neighbor, not for export direction. The value of Prefval is 0 by default, and the larger the higher the priority. Its purpose is to influence its outbound traffic, and it needs to make a policy for the neighbor that routes the injection direction. There are two ways to make a strategy:A. 针对一个邻居完全的修改，从该邻居更新来的，都更改，此时不需要方向，该邻居通告的路由，都会应用这个首选值。B.明细的修改，调用route-policy，些时需要方向，只能是import方向。Experiment one: Use Pref-val to affect t

missing after comparison, sends a connection details to DIS through PSNP, And Then DIS responds with PSNP;PSNP can also respond to LSP as ACK;Circuit ID is used to identify each port in one byte;The lan id is the System ID. Circuit ID, which is used to specify a network segment connected by L1;Metric is 10 by default;Use default information original to send the default gateway.=== Day 5 ==== BGP BGP routin

RIP, OSPF, and BGP protocols Now run on a large number of router protocols on the Internet that are RIP, OSPF, and BGP. RIP, OSPF is an internal gateway protocol that applies to the operation of a single ISP's unified router protocol, and a network operated by an ISP is called an autonomous system (AS). BGP is a router protocol between autonomous systems and

to increase bandwidth by pooling bandwidth across multiple lines connecting two points. The fourth option is to make a resource reservation RSVP (Resource reservation Protocol), which gives a portion of the bandwidth fixed to the multimedia signal, and the other protocols are congested and must not occupy the bandwidth. These solutions can effectively improve the transmission quality. RIP, OSPF, and BGP protocols On the internet now a large number

In the BGP Route Selection protocol, you can filter the BGP Route Selection and update. To do this, you need to use the prefix list. I. prefix list features: (1) it can be incrementally modified. We know that we cannot delete an entry in the general access control list, if you want to delete an entry in the list, you can only delete all the entries in the list. In the prefix list, you can delete or Add an e

Configuring different local priorities affects the routing of BGP, and when a router running BGP has multiple routes to the same destination address, the route with the highest local priority is preferred. By default, the value of the BGP local priority is 100. Local priority attributes are exchanged only between IBGP peers and are not advertised to other as.Usua

Previous post posted on Junipers: Recently, I did a BGP test in JNCIA and studied the next-hop option (discard/receive/reject) of Static Routing. I will share some of my experiences with you. If the statement is incorrect, click it!The following is the text. The attachment contains the topology and initial interface configuration file. 650) this. width = 650; "onclick = 'window. open (" http://blog.51cto.com/viewpic.php? Refimg = "+ this. src) 'borde

forwarding bb % Interface FastEthernet0/1 IP address 192.168.2.1 removed due to enabling VRF bbPE2 (config-if) # ip add 192.168.2.1 255.255.255.0PE2 (config-if) # no shut 5. Configure the dynamic routing protocol and configure it on CE:R1: CE1 (config) # router ripCE1 (config-router) # ver 2CE1 (config-router) # no auto-summaryCE1 (config-router) # net 192.168.1.0CE1 (config-router) # net 1.1.1.1 CE2 (config) # router ripCE2 (config-router) # ver 2CE2 (config-router) # no auto-summaryCE2 (conf

, OSPFv2, OSPFv3, BGP-4 and BGP-4 + and many other TCP/IP protocols at the same time. Now we will first understand the operating modes and basic principles of OSPF and BGP, and then introduce the installation and configuration methods of Zebra to make your Linux machine a router that supports OSPF and BGP. 　　 　　

, including r12001, r00002, RIPng, OSPFv2, OSPFv3, BGP-4, and BGP-4 +. Now we will first understand the operating modes and basic principles of OSPF and BGP, and then introduce the installation and configuration methods of Zebra to make your Linux machine a router that supports OSPF and BGP.

In the previous article, we introduced the features of the IS-IS protocol. Next we will summarize some of the features of the BGP Border Gateway Protocol. Hope to help you. Let's take a look at the text. Border Gateway Protocol (BGP) It is ideal for replacing the old-fashioned external Gateway Protocol (EGP). BGP provides routes between autonomous systems (, it

In-depth explanation of the VPN configuration instance about the virtual site properties, to introduce you to the VPN configuration instance method, probably a lot of people do not know how the VPN configuration instance is, no relationship, read this article you certainly have a lot of harvest, hope this article can teach you more things. Control Routing Distribution in this section, we discuss ways to control the distribution of Vpn-ipv4 routes. Target VPN Configuration instance Properti

circuit. can also not change the cost value, and the two circuit bandwidth (bandwidth) set to inconsistent, the AB1 bandwidth set larger than the AB2, according to the OSPF Route generation and discovery rules, AB1 costs will be lower than the AB2, routers will also give priority to the use of AB1 circuit. Examples of changing control methods, the basic approach is to use the routing policy to perform some operations on routes that conform to a few rules, such as denial (Deny) and allow (Permi

is to implement multi-link Point to Point Protocol (mlppp). Cisco supports bandwidth aggregation by connecting multiple lines connected to two points to increase the bandwidth. The fourth solution is to reserve resource RSVP (Resource Reservation Protocol), which distributes a portion of the bandwidth to multimedia signals. Other protocols are not allowed to occupy the bandwidth regardless of the congestion. These solutions can effectively improve the transmission quality. Rip, OSPF, and