网络拓扑：

XRV1

==============================================================

!
hostname XRV1
!

interface Loopback0
ip address 220.198.32.1 255.255.255.255
ip router isis 100
!
interface Loopback1
ip address 114.114.1.1 255.255.255.255
!
interface GigabitEthernet1
ip address 10.10.1.1 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet2
ip address 10.10.1.9 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet3
ip address 10.10.1.17 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
router isis 100
net 49.0000.2201.9832.1000.00
is-type level-2-only
!
router bgp 4809
bgp router-id 220.198.32.1
bgp log-neighbor-changes
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
network 114.114.1.1 mask 255.255.255.255
neighbor internal peer-group
neighbor internal password cisco
neighbor internal update-source Loopback0
neighbor 220.198.32.2 remote-as 4809
neighbor 220.198.32.2 peer-group internal
neighbor 220.198.32.3 remote-as 4809
neighbor 220.198.32.3 peer-group internal
neighbor 220.198.32.4 remote-as 4809
neighbor 220.198.32.4 peer-group internal
!

XRV2

==============================================================

hostname XRV2
!

interface Loopback0
ip address 220.198.32.2 255.255.255.255
ip router isis 100
!
interface Loopback1
ip address 114.114.1.2 255.255.255.255
!
interface GigabitEthernet1
ip address 10.10.1.2 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet2
ip address 10.10.1.13 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet3
ip address 10.10.1.21 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
router isis 100
net 49.0000.2201.9832.2000.00
is-type level-2-only
!
router bgp 4809
bgp router-id 220.198.32.2
bgp log-neighbor-changes
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
network 114.114.1.2 mask 255.255.255.255
neighbor internal peer-group
neighbor internal password cisco
neighbor internal update-source Loopback0
neighbor 220.198.32.1 remote-as 4809
neighbor 220.198.32.1 peer-group internal
neighbor 220.198.32.3 remote-as 4809
neighbor 220.198.32.3 peer-group internal
neighbor 220.198.32.4 remote-as 4809
neighbor 220.198.32.4 peer-group internal
!

XRV3

==============================================================

!
hostname XRV3
!

interface Loopback0
ip address 220.198.32.3 255.255.255.255
ip router isis 100
!
interface Loopback1
ip address 114.114.1.3 255.255.255.255
!
interface GigabitEthernet1
ip address 10.10.1.5 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet2
ip address 10.10.1.10 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet3
ip address 10.10.1.22 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet4
ip address 123.103.15.1 255.255.255.252
negotiation auto
bfd interval 250 min_rx 250 multiplier 3
!
router isis 100
net 49.0000.2201.9832.3000.00
is-type level-2-only
redistribute static ip
!
router isis 1200
!
router bgp 4809
bgp router-id 220.198.32.3
bgp log-neighbor-changes
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
network 114.114.1.3 mask 255.255.255.255
neighbor internal peer-group
neighbor internal password cisco
neighbor internal update-source Loopback0
neighbor internal next-hop-self
neighbor internal route-map external-import out
neighbor 123.103.15.2 remote-as 9808
neighbor 123.103.15.2 password cisco
neighbor 123.103.15.2 fall-over bfd
neighbor 220.198.32.1 remote-as 4809
neighbor 220.198.32.1 peer-group internal
neighbor 220.198.32.2 remote-as 4809
neighbor 220.198.32.2 peer-group internal
neighbor 220.198.32.4 remote-as 4809
neighbor 220.198.32.4 peer-group internal
!
!
virtual-service csr_mgmt
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
ip route 108.108.108.1 255.255.255.255 123.103.15.2
!
!
ip prefix-list external-import seq 5 permit 114.114.1.5/32
ip prefix-list external-import seq 10 permit 114.114.1.6/32
!
route-map external-import permit 10
match ip address prefix-list external-import
set ip next-hop 108.108.108.1
!
route-map external-import permit 20
!

XRV4

==============================================================

!
hostname XRV4
!

interface Loopback0
ip address 220.198.32.4 255.255.255.255
ip router isis 100
!
interface Loopback1
ip address 114.114.1.4 255.255.255.255
!
interface GigabitEthernet1
ip address 10.10.1.6 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet2
ip address 10.10.1.14 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet3
ip address 10.10.1.18 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet4
ip address 61.135.142.1 255.255.255.252
negotiation auto
bfd interval 250 min_rx 250 multiplier 3
!
router isis 100
net 49.0000.2201.9832.4000.00
is-type level-2-only
redistribute static ip
!
router bgp 4809
bgp router-id 220.198.32.4
bgp log-neighbor-changes
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
network 114.114.1.4 mask 255.255.255.255
neighbor internal peer-group
neighbor internal password cisco
neighbor internal update-source Loopback0
neighbor internal next-hop-self
neighbor internal route-map external-import out
neighbor 61.135.142.2 remote-as 9808
neighbor 61.135.142.2 password cisco
neighbor 61.135.142.2 fall-over bfd
neighbor 220.198.32.1 remote-as 4809
neighbor 220.198.32.1 peer-group internal
neighbor 220.198.32.2 remote-as 4809
neighbor 220.198.32.2 peer-group internal
neighbor 220.198.32.3 remote-as 4809
neighbor 220.198.32.3 peer-group internal
!
!
virtual-service csr_mgmt
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
ip route 108.108.108.1 255.255.255.255 61.135.142.2
!
!
ip prefix-list external-import seq 5 permit 114.114.1.5/32
ip prefix-list external-import seq 10 permit 114.114.1.6/32
!
route-map external-import permit 10
match ip address prefix-list external-import
set ip next-hop 108.108.108.1
!
route-map external-import permit 20
!

XRV5

==============================================================

!
hostname XRV5

!
interface Loopback0
ip address 220.198.32.5 255.255.255.255
ip router isis 100
!
interface Loopback1
ip address 114.114.1.5 255.255.255.255
!
interface GigabitEthernet1
ip address 10.10.2.1 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet4
ip address 123.103.15.2 255.255.255.252
negotiation auto
bfd interval 250 min_rx 250 multiplier 3
!
router isis 100
net 49.0000.2201.9832.5000.00
is-type level-2-only
!
router bgp 9808
bgp router-id 220.198.32.5
bgp log-neighbor-changes
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
network 114.114.1.5 mask 255.255.255.255
neighbor 123.103.15.1 remote-as 4809
neighbor 123.103.15.1 password cisco
neighbor 123.103.15.1 fall-over bfd
neighbor 220.198.32.6 remote-as 9808
neighbor 220.198.32.6 password cisco
neighbor 220.198.32.6 update-source Loopback0
neighbor 220.198.32.6 next-hop-self
!

XRV6

==============================================================

!
hostname XRV6

interface Loopback0
ip address 220.198.32.6 255.255.255.255
ip router isis 100
!
interface Loopback1
ip address 114.114.1.6 255.255.255.255
!
interface GigabitEthernet1
ip address 10.10.2.2 255.255.255.252
ip router isis 100
negotiation auto
isis circuit-type level-2-only
!
interface GigabitEthernet4
ip address 61.135.142.2 255.255.255.252
negotiation auto
bfd interval 250 min_rx 250 multiplier 3
!
router isis 100
net 49.0000.2201.9832.6000.00
is-type level-2-only
!
router bgp 9808
bgp router-id 220.198.32.6
bgp log-neighbor-changes
bgp graceful-restart restart-time 120
bgp graceful-restart stalepath-time 360
bgp graceful-restart
network 114.114.1.6 mask 255.255.255.255
neighbor 61.135.142.1 remote-as 4809
neighbor 61.135.142.1 password cisco
neighbor 61.135.142.1 fall-over bfd
neighbor 220.198.32.5 remote-as 9808
neighbor 220.198.32.5 password cisco
neighbor 220.198.32.5 update-source Loopback0
neighbor 220.198.32.5 next-hop-self
!

在XRV1上使用show ip bgp 查看BGP路由表

==============================================================

在XRV1上使用tracert跟踪路由，源为XRV1的l1地址，目标为XRV5的l1地址

==============================================================

配置要点：

1.在两个ISP的边界上写一条下一跳并非真实存在的路由，下一跳指向友商的真实的EBGP的接口地址

2.将上述静态路由重分布进ISIS路由

3.在边界上通过前缀列表匹配需要进行IBGP负载的友商的路由

4.通过route-map进行修改需要进行IBGP负载的友商的路由的下一跳为1的静态的目标路由

5.在边界上通过neighbor调用route-map修改下一跳后发布给IBGP

6.IBGP邻居受到从EBGP学习到的路由后即可实现负载

使用BGP的虚拟下一跳实现IGP的路由负载的更多相关文章

  1. 利用BGP虚拟下一跳实现链路负载均衡

    最近针对BGP链路负载均衡方案“虚拟下一跳”进行了总结,现将总结的PPT贴上来.

  2. Linux3.5内核以后的路由下一跳缓存

    在Linux3.5版本号(包括)之前.存在一个路由cache.这个路由cache的初衷是美好的,可是现实往往是令人遗憾的.下面是陈列得出的两个问题:1.面临针对hash算法的ddos问题(描写叙述该问 ...

  3. linux 接口地址全部清除才清理从此接口发出的下一跳路由

    接口地址全部清除才清理从此接口发出的下一跳路由 如: eth7配置两个地址 eth7: 192.168.1.1 10.1.1.1 添加一条路由: route add -net 2.2.2.0/24 g ...

  4. 等价路由在路由器和CE交换机上默认的行为是不同的，路由器总是走第一个下一跳，CE交换机是逐包。

    结论: 1.在eNSP中实验,路由器和CE交换机对于等价路由的默认转发行为是不同的, 路由器:默认是基于流的转发形态,更准确的来讲,ping两个不同的下一跳,都是走等价路由的第一个路由,不走第二条路由 ...

  5. 配置多个相同网段的ECMP下一跳，配合NQA健康检查实现高可靠性

    1.一般情况下,ECMP常用的常见是,针对很远的目的地址,下一跳分别是路由器的不同出端口,而路由器的不同端口是不同网段的,也就是说,下一跳是不同的网段地址. 但是,在连接到终端服务器时,常常会采用多个 ...

  6. route -A inet6 增加下一跳 提示错误 SIOCADDRT: No route to host

    1.增加前路由表: 2. route -A inet6 增加下一跳 提示错误 SIOCADDRT: No route to host 3.删除已有的下一条路由表项: 4.再次尝试 route -A i ...

  7. IBGP的自己下一跳，指定源命令。

    neighbor router-id update-source loopback int 当两者并不是以物理接口为搭建邻居的时候,就得使用指定源,充当TCP接口. neighbor router-i ...

  8. ensp的基础路由命令，接口，下一跳的配置，入门必备

    关于ensp入门事情,第一件事当是安装必备三件套:而后,应该是接触路由和PC机了,最烦人满屏代码,眼花缭乱: 今天写一篇零基础接触ensp的首次操作,PC-路由-路由-PC的互通实验: 实验要拉出两台 ...

  9. 【Azure API 管理】APIM集成内网虚拟网络后，启用自定义路由管理外出流量经过防火墙(Firewall)，遇见APIs加载不出来问题

    问题描述 使用 Azure 虚拟网络,Azure APIM 可以管理无法通过 Internet 访问的 API,达到以保护企业内部的后端API的目的.在虚拟网络中,启用网络安全组(NSG:Networ ...

随机推荐

  1. [TypeScript] Typescript Interfaces vs Aliases Union & Intersection Types

    TypeScript has 'interface' and 'type', so when to use which? interface hasName { firstName: string; ...

  2. Erlang中的record与宏

    http://www.cnblogs.com/me-sa/archive/2011/07/20/erlang0006.html 在Erlang中使用Tuple ,数据项的顺序\数量都是确定的,一旦数据 ...

  3. cocos2d-x之道~制作第一款文字游戏（二）

    在 cocos2d-x之道~制作第一款文字游戏(一)中,使用cocos2d-x把主界面显示出来.分别有每一个级别提供的初始短语TileView,和目标短语TargetView.初步接触了cocos2d ...

  4. BZOJ 4264 小c找朋友 - hash

    传送门 题目大意: 给定一张无向图,求满足以下条件的点对 (x,y) 数目:对任意点 z (z!=x,y),边 (x,z) 和 (y,z) 同时存在或同时不存在. 题目分析: 首先要分析的出如果xy满 ...

  5. VS2012经常使用的快捷方式完成最全面

    (1)如何更改设置快捷键 1.转到工具----选项  对话框 2.选  环境---->键盘 3.在 [显示命令包括] 以下的对话框中输入"对齐"keyword,然后就会在这个 ...

  6. hadoop 3.x 配置日志聚集功能

    打开$HADOOP_HOME/etc/hadoop/yarn-site.xml,增加以下配置(在此配置文件中尽量不要使用中文注释) <!--logs--> <property> ...

  7. hexo改造

    一直在思考网站分类的问题. 用hexo默认的分类,并不利于用户直观的感受到网站的内容意图,尤其是hexo首页进入后是最近发表的文章列表.然后考虑开启多个hexo服务,每个hexo服务是一个分类内容,如 ...

  8. 如何移除解决方案中的TFS版本控制

    1.清除(删除)项目下的所有版本控制文件,这些文件有:*.vssscc,*.vspscc删除这些版本控制文件比较简单,搜索这些后缀的文件,删除即可. 2.修改项目的解决方案文件:*.sln (1).先 ...

  9. WPF 曲线图表控件（自制）（一）

    原文:WPF 曲线图表控件(自制)(一) 版权声明:本文为博主原创文章,未经博主允许不得转载. https://blog.csdn.net/koloumi/article/details/775092 ...

  10. 中英文对照 —— 互联网、IT（信息科技）、编程

    1. 网站 web-portal:门户网站: 2. 工具与方法 crowdsourcing:众包, crowd ⇒ 众: 3. 软件 MVP:最小化可行产品,Minimum Viable Produc ...