LAB - CCNP Configuring iBGP and eBGP Local Preference, and MED

Topology

Objectives

  • For IBGP peers to correctly exchange routing information, use the next-hop-self command with the Local-Preference and MED attributes.
  • Ensure that the flat-rate, unlimited-use T1 link is used for sending and receiving data to and from the AS 200 on ISP and that the metered T1 only be used in the event that the primary T1 link has failed.

Step 1: Configure IP address and Hostname

step 2: Configure EIGRP

R2(config)#router eigrp 1

R2(config-router)#no auto-summary

R2(config-router)#network 172.16.0.0

R3(config)#router eigrp 1

R3(config-router)#no auto-summary

R3(config-router)#network 172.16.0.0

Step 3: Configure iBGP

R2(config)#router bgp 64512

R2(config-router)#neighbor 172.16.32.1 remote-as 64512

R2(config-router)#neighbor 172.1.32.1 upda lo 0

R3(config)#router bgp 64512

R3(config-router)#neighbor 172.16.64.1 remote-as 64512

R3(config-router)#neighbor 172.1.64.1 upda lo 0

时间: 2024-12-29 04:10:38

LAB - CCNP Configuring iBGP and eBGP Local Preference, and MED的相关文章

45、BGP配置实验之Local preference选路

1.Local preference选路解析 属性 传播范围 默认值 优先值 方向 备注 weight 本路由器 本路由器32768,其他路由器0 大值优先 IN CISCO私有 Local preference AS内部 100:边界路由器,通告给IBGP邻居,告知如何离开本AS 大值优先 OUT 修改Local preference值的方法: 方法一:全部修改通告给IBGP邻居的路由的Local preference值,例如: router bgp 4 bgp default local-p

LAB - CCNP BGP Case Study

Topology Objectives: 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 are operational and

BGP的简单配置与IBGP和EBGP的邻居建立过程

实验要求:AR2, AR3, AR4 利用OSPF实现全网互通,AR1使用物理接口地址建立EBGP的邻居关系,AS 100 区域中使用环回口建立IBGP的邻居关系,然后在其中宣告LO1与AR1中的环回地址,实现AR1 ping AR4 实验过程:AR1:接口地址配置interface GigabitEthernet0/0/0ip address 192.168.1.1 255.255.255.0 interface GigabitEthernet0/0/1ip address 192.168.2

LAB - CCNP Using the BGP AS_PATH Attribute

Topology Objectives: Use BGP commands to prevent private AS numbers from being advertised to the outside world. Use the AS_PATH attribute to filter BGP routes based on their source AS numbers. Step 1: Configure IP address and Hostname Step 2: Configu

LAB - CCNA Configuring Router-on-a-Stick Inter-VLAN

Topology Addressing Table Device Interface IPv4 Address Subnet Mask Default Gateway R1 g0/0.10 172.17.10.1 255.255.255.0 N/A   g0/0.30 172.17.30.1 255.255.255.0 N/A PC1 NIC 172.17.10.10 /24 172.17.10.1 PC2 NIC 172.17.30.10 /24 172.17.30.1 Objectives:

LAB – CCNP Single-Area OSPF Link Costs and Interface priorities

Single-Area OSPF Link Costs and Interface Priorities Topology Objectives: Configure single-area OSPF on a router. Advertise loopback interfaces in to OSPF Verify OSPF adjacencies. Verify OSPF routing information exchange. Modify OSPF link costs. Chan

CCNP - LAB BGP Route Reflectors and Route Filters

Topology Objectives Configure iBGP routers to use a route reflector and simple router filter. Background The International Travel Agency maintains a full-mesh iBGP network that has quickly scaled beyond 100 routers. The company wants to implement rou

BGP - 3,BGP重要概念(EBGP,IBGP,防环/黑洞/全互连/同步)

1,防环/黑洞/同步/全互连(为出现大于号,现在通常都是要下一跳可达+关同步) a)EBGP邻居传来的路由可以通过AS_PATH防环,所以收到的不会有问题,因此直接是优化的(>),也就是直接装表.再传给EBGP邻居或IBGP邻居. b)IBGP邻居传来的路由由于是在同一个AS,所以没法通过AS_PATH防环,于是BGP规定IBGP只能传一跳. c)BGP还有2个问题. 问题一:BGP规定从EBGP学到的路由,传给IBGP邻居,不改变下一跳.这样通常对AS内部路由器来说,这个下一跳地址是不可达的.

CCNP路由实验之七 动态路由之BGP

?? 动态路由协议可以自动的发现远程网络,只要网络拓扑结构发生了变化,路由器就会相互交换路由信息,不仅能够自动获知新增加的网络,还可以在当前网络连接失败时找出备用路径.根据是否在一个自治域内部使用,动态路由协议分为内部网关协议(IGP)和外部网关协议(EGP).这里的自治域指一个具有统一管理机构.统一路由策略的网络.自治域内部采用的路由选择协议称为内部网关协议,常用的有RIP.EIGRP.OSPF.IS-IS:外部网关协议主要用于多个自治域之间的路由选择,常用的是BGP和BGP-4.在一个路由器