BGP的路由反射与BGP联盟-白红宇

BGP的路由反射与BGP联盟

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发布时间：2019-06-29

本文共 6362 字，大约阅读时间需要 21 分钟。

BGP的路由反射与BGP联盟

配置思路：

首先把IGP配置通就是把路由配置好然后才可以建立邻居

AR1 和 AR2 建立内部邻居先配置小 AS 号然后再指定大 AS 号然后用虚拟端口loopback IP 地址建立邻居
注：不要忘记指向邻居的端口改为loopback端口
AR2 和 AR1 建立内部邻居先配置小 AS 号然后再指定大 AS 号然后用虚拟端口loopback IP 地址建立邻居
AR2 和 AR3 建立内部邻居先配置小 AS 号然后再指定大 AS 号然后用虚拟端口loopback IP 地址建立邻居
并把 AR1 当做自己的客户端同时自己成为路由反射器
注：不要忘记指向邻居的端口改为loopback端口
AR3 与 AR2 建立内部邻居先配置小 AS 号然后再指定大 AS 号然后用虚拟端口loopback IP 地址建立邻居
AR3 与 AR4 建立外部邻居先配置小 AS 号然后再指定大 AS 号并 confederation peer-as 64513 联盟邻居 as 64513
然后用端口 IP 地址建立邻居
AR4 与 AR3 建立外部邻居先配置小 AS 号然后再指定大 AS 号并 confederation peer-as 64512 联盟邻居 as 64512
然后用端口 IP 地址建立邻居
AR4 与 AR5 建立内部邻居先配置小 AS 号然后再指定大 AS 号然后用虚拟端口loopback IP 地址建立邻居
AR5 与 AR4 建立内部邻居先配置小 AS 号然后再指定大 AS 号然后用虚拟端口loopback IP 地址建立邻居
在大 AS外部路由传路由到内部大 AS 的时候下一跳是变化的
内部传路由下一跳是不变的
所以在每个 AS 边界路由器上需要把下一跳改成自己的
所改的下一跳地址就是与内部建立邻居的那个地址
peer x.x.x.x next-hop-local

每个路由器配置：

R1配置：

interface GigabitEthernet0/0/0

ip address 192.168.16.2 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.12.1 255.255.255.0

interface GigabitEthernet0/0/2

ip address 192.168.17.1 255.255.255.0

interface NULL0

interface LoopBack0

ip address 10.10.1.1 255.255.255.0

bgp 64512

router-id 1.1.1.1

confederation id 100

peer 10.10.2.2 as-number 64512

peer 10.10.2.2 connect-interface LoopBack0

peer 192.168.16.6 as-number 200

peer 192.168.17.7 as-number 200

ipv4-family unicast

undo synchronization

import-route direct

peer 10.10.2.2 enable

peer 10.10.2.2 next-hop-local

peer 192.168.16.6 enable

peer 192.168.17.7 enable

ospf 1 router-id 1.1.1.1

area 0.0.0.0

network 10.10.1.1 0.0.0.0

network 192.168.12.0 0.0.0.255

AR2配置：

interface GigabitEthernet0/0/0

ip address 192.168.12.2 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.23.2 255.255.255.0

interface GigabitEthernet0/0/2

interface NULL0

interface LoopBack0

ip address 10.10.2.2 255.255.255.0

bgp 64512

router-id 2.2.2.2

confederation id 100

peer 10.10.1.1 as-number 64512

peer 10.10.1.1 connect-interface LoopBack0

peer 10.10.3.3 as-number 64512

peer 10.10.3.3 connect-interface LoopBack0

ipv4-family unicast

undo synchronization

peer 10.10.1.1 enable

peer 10.10.1.1 reflect-client

peer 10.10.3.3 enable

ospf 1 router-id 2.2.2.2

area 0.0.0.0

network 10.10.2.2 0.0.0.0

network 192.168.12.0 0.0.0.255

network 192.168.23.0 0.0.0.255

AR3配置：

interface GigabitEthernet0/0/0

ip address 192.168.23.3 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.34.3 255.255.255.0

interface GigabitEthernet0/0/2

interface NULL0

interface LoopBack0

ip address 10.10.3.3 255.255.255.0

bgp 64512

router-id 3.3.3.3

confederation id 100

confederation peer-as 64513

peer 10.10.2.2 as-number 64512

peer 10.10.2.2 connect-interface LoopBack0

peer 192.168.34.4 as-number 64513

ipv4-family unicast

undo synchronization

peer 10.10.2.2 enable

peer 192.168.34.4 enable

ospf 1 router-id 3.3.3.3

area 0.0.0.0

network 10.10.3.3 0.0.0.0

network 192.168.23.0 0.0.0.255

network 192.168.34.0 0.0.0.255

AR4配置：

interface GigabitEthernet0/0/0

ip address 192.168.34.4 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.45.4 255.255.255.0

interface GigabitEthernet0/0/2

interface NULL0

interface LoopBack0

ip address 10.10.4.4 255.255.255.0

bgp 64513

confederation id 100

confederation peer-as 64512

peer 10.10.5.5 as-number 64513

peer 10.10.5.5 connect-interface LoopBack0

peer 192.168.34.3 as-number 64512

ipv4-family unicast

undo synchronization

peer 10.10.5.5 enable

peer 192.168.34.3 enable

ospf 1 router-id 4.4.4.4

area 0.0.0.0

network 10.10.4.4 0.0.0.0

network 192.168.34.0 0.0.0.255

network 192.168.45.0 0.0.0.255

AR5配置：

interface GigabitEthernet0/0/0

ip address 192.168.45.5 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.59.5 255.255.255.0

interface GigabitEthernet0/0/2

ip address 192.168.20.254 255.255.255.0

interface NULL0

interface LoopBack0

ip address 10.10.5.5 255.255.255.0

bgp 64513

confederation id 100

peer 10.10.4.4 as-number 64513

peer 10.10.4.4 connect-interface LoopBack0

peer 192.168.59.9 as-number 900

ipv4-family unicast

undo synchronization

network 192.168.20.0

peer 10.10.4.4 enable

peer 10.10.4.4 next-hop-local

peer 192.168.59.9 enable

ospf 1 router-id 5.5.5.5

area 0.0.0.0

network 10.10.5.5 0.0.0.0

network 192.168.45.0 0.0.0.255

AR6配置：

interface GigabitEthernet0/0/0

ip address 192.168.68.6 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.16.6 255.255.255.0

interface GigabitEthernet0/0/2

interface NULL0

interface LoopBack0

ip address 10.10.6.6 255.255.255.0

bgp 200

peer 10.10.8.8 as-number 200

peer 10.10.8.8 connect-interface LoopBack0

peer 192.168.16.2 as-number 100

ipv4-family unicast

undo synchronization

peer 10.10.8.8 enable

peer 10.10.8.8 next-hop-local

peer 192.168.16.2 enable

rip 1

version 2

network 10.0.0.0

network 192.168.68.0

AR7配置：

interface GigabitEthernet0/0/0

ip address 192.168.78.7 255.255.255.0

interface GigabitEthernet0/0/1

interface GigabitEthernet0/0/2

ip address 192.168.17.7 255.255.255.0

interface NULL0

interface LoopBack0

ip address 10.10.7.7 255.255.255.0

bgp 200

peer 10.10.8.8 as-number 200

peer 10.10.8.8 connect-interface LoopBack0

peer 192.168.17.1 as-number 100

ipv4-family unicast

undo synchronization

peer 10.10.8.8 enable

peer 10.10.8.8 next-hop-local

peer 192.168.17.1 enable

rip 1

version 2

network 10.0.0.0

network 192.168.78.0

AR8配置：

interface GigabitEthernet0/0/0

ip address 192.168.68.8 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.78.8 255.255.255.0

interface GigabitEthernet0/0/2

ip address 192.168.30.254 255.255.255.0

interface NULL0

interface LoopBack0

ip address 10.10.8.8 255.255.255.0

bgp 200

peer 10.10.6.6 as-number 200

peer 10.10.6.6 connect-interface LoopBack0

peer 10.10.7.7 as-number 200

peer 10.10.7.7 connect-interface LoopBack0

ipv4-family unicast

undo synchronization

network 192.168.30.0

peer 10.10.6.6 enable

peer 10.10.7.7 enable

rip 1

version 2

network 10.0.0.0

network 192.168.78.0

network 192.168.68.0

AR9配置：

interface GigabitEthernet0/0/0

ip address 192.168.40.254 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.59.9 255.255.255.0

interface GigabitEthernet0/0/2

interface NULL0

bgp 900

peer 192.168.59.5 as-number 100

ipv4-family unicast

undo synchronization

import-route direct

peer 192.168.59.5 enable

转载于:https://blog.51cto.com/13585615/2083949

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