mpls bgp

In the IGP era, we all know, for example, OSPF, link state protocol, in the routing of the time, than the cost of the link, which link consumption will be more priority, if two of the same link consumption, then do load balancing. In fact, the 2 principles to achieve the OSPF---shortest path first work principle. What if, in BGP, there are multiple routes to achieve the goal, how should the choice be made? Which path is the preferred one? Take a lo

Cisco ios xr bgp Packet Processing Denial of Service Vulnerability Release date: 2010-08-30Updated on: 2010-08-31 Affected Systems:Cisco ios xr 3.4.0-3.9.1Description:--------------------------------------------------------------------------------Cve id: CVE-2010-3035 Cisco ios xr is an operating system with self-protection and self-repair functions used in Cisco network devices. The BGP feature of Cisc

BGP Route update timer analysis defines the BGP Route update timer on RFC4271 of BGP. This timer can only work for routes with the same prefix of the same address family, its main function is to prevent a route in the network from fluctuating too frequently, and it is also a protection for the CPU. It may be too obscure to describe this feature in text, so we wil

address 4::4/64IPv6 OSPF area 0 Interface serial0/0IPv6 address 2000:34::4/64IPv6 OSPF Area 0Interface SERIAL0/1IPv6 address 2000:45::4/64IPv6 OSPF Area 0IPv6 router OSPF 110Router-id 4.4.4.4R5 ConfigurationIPv6 unicast-routingInterface Loopback0IPv6 address 5::5/64IPv6 OSPF Area 0Interface SERIAL0/1No IP addressIPv6 address 2000:45::5/64IPv6 router OSPF 110Router-id 5.5.5.53. Configure BGPR1 ConfigurationRouter BGP 1No synchronizationBGP Router-id 1

650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/0435456332-0.jpg "title =" BGP Route reflector RR configuration extension diagram. JPG "alt =" 160508473.jpg"/> R1: Configuration En Conf t Int lo 0 Ip add 1.1.1.1 255.255.255.0 No shut Exit Int s0/0 Ip add 12.12.12.1 255.255.255.0 No shut Clock rate 64000 Exit Router VPN 1 No auto-summary Network 12.12.12.0 255.255.255.0 Network 1.1.1.0 255.255.255.0 Exit Router

With the development of technology, the BGP cloud host technology is becoming more and more mature. The cloud computing technology of BGP cloud hosts integrates cloud computing resources with mainstream website creation software programs on the Internet, helps small and medium-sized entrepreneurs lower their entrepreneurial thresholds and build an ecological chain for Internet entrepreneurs.BGP is a routing

Release date:Updated on: Affected Systems:Cisco ios xe 3.9.xDescription:--------------------------------------------------------------------------------Bugtraq id: 63979CVE (CAN) ID: CVE-2013-6706 Cisco IOS is an interconnected network operating system used on most Cisco system routers and network switches. When Cisco ios xe processes an IP packet header in an MPLS packet, the CEF module may encounter an error. Attackers can exploit this vulnerabil

-if) #inter f1/0 R1 (config-if) #ip Router ISIS R1 (config-if) #inter Loop 0 R1 (config-if) #ip Router ISIS R1 (config-if) #router BGP 65001 BGP AS65001 R1 (config-router) #bgp Router-id 1.1.1.1 BGP routing ID R1 (config-router) #neighbor 2.2.2.2 remote-as 65001 establish a neighbor relationship R1 (config-route

BGPIs the routing protocol used to connect to an independent system on the Internet. It is an enhanced, comprehensive, and scalable protocol developed by the Internet Engineering Task Group. BGP4 supports the CIDR addressing scheme, which increases the number of available IP addresses on the Internet. BGP was designed to replace the original external gateway protocol EGP and is also considered a path vector protocol. The reflector configuration proces

1.1.1.1Log-adjacency-changesNetwork 1.1.1.0 0.0.0.255 Area 0Network 14.1.1.0 0.0.0.255 Area 0Router BGP 4No synchronizationBGP Router-id 1.1.1.1Neighbor 4.4.4.4 Remote-as 4Neighbor 4.4.4.4 Update-source Loopback0Neighbor 4.4.4.4 Next-hop-selfNeighbor 13.1.1.3 Remote-as 3No auto-summaryR2 ConfigurationInterface Loopback0IP address 2.2.2.2 255.255.255.0Interface SERIAL0/1IP address 23.1.1.2 255.255.255.0Interface fastethernet1/0IP address 24.1.1.2 255.

Release date:Updated on: Affected Systems:Cisco NX-OSDescription:--------------------------------------------------------------------------------Bugtraq id: 64670CVE (CAN) ID: CVE-2013-6982 Cisco NX-OS is a data center-level operating system that represents a modular design, always-on and maintainability. The Border Gateway Protocol (BGP) feature of the Cisco NX-OS has a security vulnerability that allows unauthenticated remote attackers to reset a

Some experiences in man will be shared with you. The approximate topology is shown in (physical connection diagram). The two downlink devices (R1 and R2) and the two core devices both establish IBGP neighbor relationships with the two route reflectors RR, in the BGP of R1 and R2, use the network to publish the network segment 192.168.1.0/24 at the same time. 1. If no multiple paths (maximum-paths) are set on the two route reflectors, note: Cisco divid

Internet capacity has increased significantly over the past two years, and the explosive growth of Internet data streams has resulted in bottlenecks, especially in the "middle kilometer" Location Based on Internet networks. These bottlenecks are caused by different causes, which may degrade application performance or even cause service failure. Intelligent Route control ensures that companies control Internet routes while reducing network fees and effectively eliminating congestion in the middle

These days have been looking at BGP, I think the attribute of BGP is a difficult point, sometimes look at to their own are confused, especially the difference between LOCAL-PREF and MED in BGP. after finding some information on the Internet, I can understand a lot. Med is used to affect the inbound traffic. It is an announcement to the ebgp peer.The local-pref i

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.

BGP attribute experiment * network boundary summary Router (config-router) # no auto-summary -- default: BGP, r1_1 and r1_2, and OSPF are all automatically summarized on the network boundary -- BGP, r1_2, auto-summary can be disabled by and VPC-auto-summary is enabled by default before 12.2 (8)-after 12.2 (8, automatic summary is disabled by default * atomic Aggr

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 route table. No Route details can be used to reduce the number of route changes. It does not

First, the experimental topology:Second, the experimental requirements:1, increase R5:as 5, and R2 through the Direct Connect route to establish BGP neighbor relationship;2, R2 deployed in BGP under Send-conmmunity to R5;3, R4 deployment ACL crawl 4.4.4.4 traffic, Route-map named Shuchu, call ACL, set community no-export, and invoke Route-map Shuchu out in the BGP