bgp attributes

BGP protocol-neighbor PMTU checks that the BGP protocol runs on TCP, so the TCP parameter settings will affect the performance of BGP. When the number of routes is small, the adjustment of TCP Parameters may not affect the BGP performance. However, when the number of routes is large, the adjustment of TCP Parameters ca

Bgp-community: Indirect influence route routing!such as: 100 of the network left AS100, carry attributes away!Configuration of the AR1:BGP 100Peer 2.2.2.2 As-number 200Peer 2.2.2.2 Ebgp-max-hop 255Peer 2.2.2.2 Connect-interface LoopBack0Peer 3.3.3.3 As-number 200Peer 3.3.3.3 Ebgp-max-hop 255Peer 3.3.3.3 Connect-interface LoopBack0Group AS200 InternalIpv4-family U

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topologyObjectives: Plan, design, and implement the Internation travel Agency core network. Plan, design, nad implement the travel Data Providers Netwrok. Allow the networks to communicate via BGP. Verify that all implementations is operational and functional according to the guidelines. BackgroundThe International Travel Agency (ITA) needs both it core network and its travel Data Providers (TDP) network set up. Configre each

BGP large enterprise network engineering case 1 650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px "title =" wps_clip_image-3188 "border =" 0 "alt =" wps_clip_image-3188 "src =" http://img1.51cto.com/attachment/201108/31/2116646_1314803544Kphe.png "" 1028 "=" height = "728"/> 650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px "title =" wps_c

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

-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

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 protocol deployed in the domain should consider the following: 1. Actual network topology; 2. Whether the device pe

Local-preferenceLocal Priority PropertyOnly exchanged between IBGP peers and not advertised to other asThe greater the priority, the higher the priority, the default is 100For multiple exits of the same as, go out of the waybelongs to any recognized attributeNote: The source route delivery direction + specified peer+ the direction (Import/export) that you want to pass in order to correctly apply the routing policy.650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/84/89/wKioL1eTYB3DW2H_A

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

First, the experimental topology:Second, the experimental requirements:1, R4, R1, R3, R2 respectively in the BGP process deployment neighbor Send Community attribute command;2, R4 deployment ACL crawl 4.4.4.4 traffic, Route-map named as, call ACL, set community Local-as, and call Route-map as out in the BGP process;3, verify: R1, R3 have 4.4.4.4, but R2 have no 4.4.4.0 route entry?Third, command deployment:

1. Characteristics Use the Tcp179 port to build a neighbor, not to use multicast or broadcast, so you can only set up a neighbor by hand unicast 2. Four kinds of packages Open package: For building a neighbor relationship, use only when building a neighbor, when the neighbor is established, no longer send KeepAlive package: Used to keep a neighbor relationship, it plus open is equivalent to the IGP Hello package. Send once every 60 seconds, holdtime 180 seconds Update package: Contains the

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.

In March 1999, the Internet Task Force (IETF) published a RFC2547 by Cisco, describing a way for operators to provide virtual private network (VPN) services to users through an IP backbone network. This method uses an extended BGP (Boundary routing protocol) to distribute VPN routing information through the carrier backbone network, and uses Multiprotocol token switching (MPLS) to forward VPN traffic between the VPN user sites. The main purpose of thi

as an effort in the IT line struggle people, inspirational to do the following points:Moved the machine, played the system, proficient in the protocol, hit the code.--I want to keep my efforts!--------------------------------------------------------------------------------------------------------------- -------------------------- what is QuaggaQuagga software formerly known as Zebra is a GNU copyrighted software written by a Japanese development team. Quagga project started with 1996, the curren

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

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 protocol in MPLS technology. Let's take a look at the following article. all problems can be solved. When LSR assigns tags B