bgp neighborship

Original address: http://www.cnblogs.com/xitang/p/3575255.htmlBelieve that a lot of friends will be some of these nouns around some of the head, many friends think that smart DNS with two-line acceleration, CDN acceleration is similar technology. In fact, although their purpose is one: to allow users to access the site faster. But the principles of their application are vastly different.It must be clear to everyone that these are more common ways to host acceleration. So the text mainly introduc

1. The router is also called the IP gateway, and the Gateway Protocol is the protocol for exchanging routing information between gateways.2. Autonomous systems:(1) Autonomous system is connected by the homogeneous gateway of the Internet, autonomous system within the gateway to perform internal Gateway Protocol (IGP), mutual exchange of routing information(2) The IGP is dedicated within the autonomous system, serves for a particular application, is not valid outside the autonomous system;(3) An

manage the address of the route, just configured on the switch two metric values different default routes, so that can not meet the problem Please. My understanding: ① two static routes on the switch IP Route 10.50.13.80 255.255.255.240 10.10.45.4 IP Route 10.50.13.128 255.255.255.240 10.10.45.5 ② also configures two static routes on R1, metric values are different, and configuration track Track 1 interface ETHERNET0/2 Line-protocol Track 2 interface ETHERNET0/3 Line-protocol IP Route 1

. Bridges Bridge: Network devices that connect two peer-to-peer networks, but in today's context, Linux Bridge is the famous Docker0. BGP: Backbone network routing protocol, today with the Internet, the Internet is composed of many small autonomous networks, the three-tier routing between autonomous networks is implemented by BGP. SDN, Openflow: Software defines a term within a network, such as the flow

Data Packets transmitted in the MPLS network can have multiple labels. Generally, there is only one label for data transmission in the MPLS network, and there are two labels in the mpls vpn. This is the label stack, they are called the top label and the bottom stack label respectively. The inner layer label should be the bottom stack label, and the outer layer label is the top label. In any case, when packets are transmitted in the MPLS network, A vro forwards data only by looking at one label,

-interface Serial0/1No passive-interface FastEthernet1/0Network 3.3.3.3 0.0.0.0 area 0Network 10.0.20.0.0.0.3 area 0Network 10.0.23.0 0.0.0.3 area 0Network 10.0.35.0 0.0.0.3 area 0Interface f1/0Ip ospf network point-to-pointRT4:Router ospf 1Router-id 4.4.4Passive-interface defaultNo passive-interface Serial0/0Network 4.4.4.4 0.0.0.0 area 0Network 10.0.24.0 0.0.0.3 area 0Network 172.16.4.0 0.0.0.255 area 0RT5:Router ospf 1Router-id 5.5.5Passive-interface defaultNo passive-interface Serial0/0Netwo

, the container above will assign it a globally unique IP address, which involves the topic of ipam. Overlay: Build an independent network on top of an existing two-or three-layer network, which usually has its own independent IP address space, exchange, or routing implementation. Ipsesc: A point-to-point encrypted communication protocol, typically used in the data channel of the overlay network. VXLAN: This solution, proposed by a consortium of VMware, Cisco, Redhat, and so on, is the mos

with a unified management organization and a unified routing policy. The Routing Protocol adopted in the autonomous region is called the internal gateway protocol, which is commonly used by RIP and OSPF; the external gateway protocol is mainly used for routing selection between multiple autonomous domains, commonly used BGP and BGP-4 ｡ 1. RIP Network Routing Protocol The RIP Protocol was originally designe

protocols such as OSPF, Is-is, BGP, respectively, the calculation and maintenance of their own routing table, all the protocol generated routing entries eventually aggregated into a routing management module. For a given destination IP address, various routing protocols can compute a route. However, when the specific message forwarding using which protocol to calculate the route, then by the Routing management module according to a certain algorithm

(OSPF) 402.4 Internet inter-domain Routing protocol BGP542.4.1 Autonomous System-level network topology 552.4.2 Inter-autonomous system connection Relationship 572.4.3 Domestic ISP Interconnection situation 612.4.4 Border Gateway Protocol (BGP) Introduction 632.4.5 Policy Routing in BGP 712.4.6 BGP Routing Convergence problem 752.4.7

.2cto.com R6 # SHOW RUNBuilding configuration... Current configuration: 2320 bytes! Version 12.4 service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption! Hostname R6! Boot-start-markerboot-end-marker !! No aaa new-modelmemory-size iomem 5 !! Ip cefno ip domain lookup !! Ip vrf r6in rd 6100 route-target import 100:100! Www.2cto.com ip vrf r6out rd route-target export! Mpls label range 600 699 mpls label protocol ldp! Interface Loopback0 ip address

255.255.255.255.10.1.5.5 0.0.0.0 0net 5.5.5 0.0.0.0 a 0 redistribute image100 subnets metric 100 metric-type 1 exitrouter VPN 100no auto scaling net 10.1.6.5 limit ospf 1 metric 10000 100 255 1 1500end R6conf tint l 0ip ad 6.6.6.6 limit s2/ 1ip ad 10.1.6.6 255.255.255.0encap fno arp fno frame inveframe map ip 10.1.6.5 615 bno shutrouter VPN 100no aunet 6.6.6.6 0.0.0.0net 10.1.6.6 0.0.0.0end verification R1 # sh ip routeCodes: c-connected, S-static, R-RIP, M-mobile, B-

through the process. When routing selection processes do not share information about the network system, it is called night routing (ships in night, SIN )｡ 3. Default seed measurement values. The default seed measurement values of RIP, IGRP, and VPN are all infinite. They do not enter the route selection table unless the default value is changed; the default IS-IS metric value IS 0, but it can enter the routing table. The default OSPF metric IS two types of LSA value 20, and the routing from

650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px "title =" image "border =" 0 "alt =" image "src =" http://www.bkjia.com/uploads/allimg/131227/031R16441-0.png "" 835 "height =" 219 "/> How does one achieve load balancing on multiple links? Two methods: 1. Build an EBGP neighbor using the loopback port and use EBGP multi-hop 2. EBGP multipath The following two methods are discussed: 1. Build an EBGP neighbor using the loopback port

process. When routing selection processes do not share information about the network system, it is called night routing (ships in night, SIN )｡ 3. Default seed measurement values. The default seed measurement values of RIP, IGRP, and VPN are all infinite. They do not enter the route selection table unless the default value is changed; the default IS-IS metric value IS 0, but it can enter the routing table. The default OSPF metric IS two types of LSA value 20, and the routing from

60000 50000 ff rate 20 2000 \ note that the original object information must be the same Router (config) # ip nbar pdlm-file Processing Protocol Discovery: router (config-if) # ip nbar protocol-discoveryshow ip nbar protocol-discoveryip nbar port-map protocol [tcp | udp] new-port [new-port...] 8-QoS PreclassifyQoS for VPNs (QoS preclassify) is a Cisco IOS feature that allows packets to be classified before tunneling and encryption authorization-QoS Policy Propagation Through BGP1-The QoS p

% LINEPROTO-5-UPDOWN: line protocol on interface vlan20, changed state to ups3560 (config-router) # ends3560 # % SYS-5-CONFIG_ I: configured from console by lesles3560 # Show IP Route codes: C-connected, S-static, i-IGRP, R-rip, M-mobile, B-BGP D-VPN, ex-VPN external, o-OSPF, IA-OSPF Inter Area N1-ospf nssa external type 1, n2-ospf nssa external type 2 E1-OSPF external type 1, E2-OSPF external type 2, e-EGP I-is, L1-is level-1, L2-is level-2, Ia-Is I

as a 32-bit mask. 2. Use this interface address as the router ID of the Dynamic Routing Protocol OSPF and BGP During the operation of the Dynamic Routing Protocol OSPF and BGP, you must specify a router ID for the Protocol. The router must be unique in the autonomous system. Because the router ID is A 32-bit unsigned integer, which is very similar to an IP address. And the IP address is unique. The ro

Serial1/2 Ip address 10.0.1.3 255.255.255.0 Encapsulation frame-relay Ip ospf network broadcast ! Router ospf 1 Router-id 3.3.2.3 Log-adjacency-changes Network 3.3.1.0 0.0.0.255 area 0 Network 3.3.2.0 0.0.0.255 area 0 Network 10.0.1.0 0.0.0.255 area 0 ! The neighbor relationship of each vro: R1 # show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 2.2.2.2 1 FULL/DROTHER 00:00:34 10.0.1.2 Serial1/0 3.3.2.3 1 FULL/DR 00:00:39 10.0.1.3 Serial1/0 R2 # show

convenient management, and specify an IP address as the management address on this interface. The Administrator will use this address to remotely log on to the vrotelnet for telnet). This address actually serves a function similar to a device name. However, there are usually many interfaces and addresses on each Huawei router. Why don't you choose one of them? The reason is as follows: Because the telnet command uses TCP packets, the following situation may occur: A router interface is down due