BGP实验
目录
实验要求:
优化及要求：
拓扑设计：编辑
步骤一：地址划分
步骤二：拓扑建立，IP地址配置
拓扑建立编辑
IP地址配置
步骤三：OSPF配置
R2~R7均配置：
检测：
修改业务网段位24位：
检测：编辑
步骤四：配置BGP协议：
抽查检测:
编辑
编辑
编辑
步骤五：发布路由
检测：编辑
做反射器
检测：编辑
步骤六：完成优化1中的不能宣告问题
检测：编辑
编辑创建Tunnel隧道：
检测：编辑
步骤七：完成优化5
方法一：在R2上聚合
检测：编辑
编辑
方法二：
检测：编辑
先写空接口防环路由：
直接在BGP中宣告
检测：编辑
实验要求:
优化及要求：
1，AS1存在两个环回，，一个地址为192.168.1.0/24该地址不能在任何协议中宣告,
AS3中存在两个环回，一个地址为192.168.2./24该地址不能在任何协议中宣告，最终要求这两个环回可以互相通讯
2，整个AS2的Ip地址为172.16.0.0/16，请合理划分
3，AS间的骨干链路IP地址随意定制
4，使用BGP协议让整个网络所有设备的环回可以互相访问,
5，减少路由条自数量，避免环路出现
拓扑设计：
步骤一：地址划分
总地址网段：172.16.0.0 /16
骨干链路：172.16.0.0 /24划分至30位
172.16.0.0 30
172.16.0.4 30
172.16.0.8 30
......
建邻的环回地址：172.16.1.0 /24下的主机地址
172.16.1.2/32
172.16.1.3/32
172.16.1.4/32
........
用户网段：172.16.2.0 /24 172.16.3.0 /24 172.16.4.0 24 ......
步骤二：拓扑建立，IP地址配置
拓扑建立
IP地址配置
R1
interface GigabitEthernet0/0/0
ip address 12.1.1.1 255.255.255.0
interface LoopBack0
ip address 1.1.1.1 255.255.255.255
interface LoopBack1
ip address 192.168.1.1 255.255.255.0 R2
interface GigabitEthernet0/0/0
ip address 12.1.1.2 255.255.255.0
interface GigabitEthernet0/0/1
ip address 172.16.0.1 255.255.255.252
interface GigabitEthernet0/0/2
ip address 172.16.0.13 255.255.255.252
interface LoopBack0
ip address 172.16.1.2 255.255.255.255
interface LoopBack1
ip address 172.16.2.1 255.255.255.0 R3
interface GigabitEthernet0/0/0
ip address 172.16.0.2 255.255.255.252
interface GigabitEthernet0/0/1
ip address 172.16.0.5 255.255.255.252
interface LoopBack0
ip address 172.16.1.3 255.255.255.255
interface LoopBack1
ip address 172.16.3.1 255.255.255.0 R4
interface GigabitEthernet0/0/0
ip address 172.16.0.6 255.255.255.252
interface GigabitEthernet0/0/1
ip address 172.16.0.9 255.255.255.252
interface LoopBack0
ip address 172.16.1.4 255.255.255.255
interface LoopBack1
ip address 172.16.4.1 255.255.255.0 R5
interface GigabitEthernet0/0/0
ip address 172.16.0.14 255.255.255.252
interface GigabitEthernet0/0/1
ip address 172.16.0.17 255.255.255.252
interface LoopBack0
ip address 172.16.1.5 255.255.255.255
interface LoopBack1
ip address 172.16.5.1 255.255.255.0 R6
interface GigabitEthernet0/0/0
ip address 172.16.0.18 255.255.255.252
interface GigabitEthernet0/0/1
ip address 172.16.0.21 255.255.255.252
interface LoopBack0
ip address 172.16.1.6 255.255.255.255
interface LoopBack1
ip address 172.16.6.1 255.255.255.0 R7
interface GigabitEthernet0/0/0
ip address 172.16.0.22 255.255.255.252
interface GigabitEthernet0/0/1
ip address 172.16.0.10 255.255.255.252
interface GigabitEthernet0/0/2
ip address 78.1.1.7 255.255.255.0
interface LoopBack0
ip address 172.16.1.7 255.255.255.255
interface LoopBack1
ip address 172.16.7.1 255.255.255.0 R8
interface GigabitEthernet0/0/0
ip address 78.1.1.8 255.255.255.0
interface LoopBack0
ip address 8.8.8.8 255.255.255.255
interface LoopBack1
ip address 192.168.2.1 255.255.255.0 步骤三：OSPF配置
R2~R7均配置：
ospf 1
area 0.0.0.0
network 172.16.0.0 0.0.255.255 检测：
修改业务网段位24位：
修改接口网络类型：broadcast
进入接口输入 ospf network-type broadcast
检测：
步骤四：配置BGP协议：
R1
bgp 1
router-id 1.1.1.1
peer 172.16.1.2 as-number 2
peer 172.16.1.2 ebgp-max-hop 2
peer 172.16.1.2 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 172.16.1.2 enable
#
ip route-static 172.16.1.2 255.255.255.255 12.1.1.2R2
bgp 64512
router-id 172.16.1.2
confederation id 2
confederation peer-as 64513
peer 1.1.1.1 as-number 1
peer 1.1.1.1 ebgp-max-hop 2
peer 1.1.1.1 connect-interface LoopBack0
peer 172.16.1.3 as-number 64512
peer 172.16.1.3 connect-interface LoopBack0
peer 172.16.1.5 as-number 64513
peer 172.16.1.5 ebgp-max-hop 2
peer 172.16.1.5 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 1.1.1.1 enable
peer 172.16.1.3 enable
peer 172.16.1.3 next-hop-local
peer 172.16.1.5 enable
#
ip route-static 1.1.1.1 255.255.255.255 12.1.1.1R3
bgp 64512
router-id 172.16.1.3
confederation id 2
peer 172.16.1.2 as-number 64512
peer 172.16.1.2 connect-interface LoopBack0
peer 172.16.1.4 as-number 64512
peer 172.16.1.4 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 172.16.1.2 enable
peer 172.16.1.4 enableR4
bgp 64512
router-id 172.16.1.4
confederation id 2
confederation peer-as 64513
peer 172.16.1.3 as-number 64512
peer 172.16.1.3 connect-interface LoopBack0
peer 172.16.1.7 as-number 64513
peer 172.16.1.7 ebgp-max-hop 2
peer 172.16.1.7 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 172.16.1.3 enable
peer 172.16.1.7 enableR5
bgp 64513
router-id 172.16.1.5
confederation id 2
confederation peer-as 64512
peer 172.16.1.2 as-number 64512
peer 172.16.1.2 ebgp-max-hop 2
peer 172.16.1.2 connect-interface LoopBack0
peer 172.16.1.6 as-number 64513
peer 172.16.1.6 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 172.16.1.2 enable
peer 172.16.1.6 enableR6
bgp 64513
router-id 172.16.1.6
confederation id 2
peer 172.16.1.5 as-number 64513
peer 172.16.1.5 connect-interface LoopBack0
peer 172.16.1.7 as-number 64513
peer 172.16.1.7 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 172.16.1.5 enable
peer 172.16.1.7 enableR7
bgp 64513
router-id 172.16.1.7
confederation id 2
confederation peer-as 64512
peer 8.8.8.8 as-number 3
peer 8.8.8.8 ebgp-max-hop 2
peer 8.8.8.8 connect-interface LoopBack0
peer 172.16.1.4 as-number 64512
peer 172.16.1.4 ebgp-max-hop 2
peer 172.16.1.4 connect-interface LoopBack0
peer 172.16.1.6 as-number 64513
peer 172.16.1.6 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 8.8.8.8 enable
peer 172.16.1.4 enable
peer 172.16.1.6 enable
peer 172.16.1.6 next-hop-local
#
ip route-static 8.8.8.8 255.255.255.255 78.1.1.8R8
bgp 3
router-id 8.8.8.8
peer 172.16.1.7 as-number 2
peer 172.16.1.7 ebgp-max-hop 2
peer 172.16.1.7 connect-interface LoopBack0
#
ipv4-family unicast
undo synchronization
peer 172.16.1.7 enable
#
ip route-static 172.16.1.7 255.255.255.255 78.1.1.7抽查检测:
配置成功。
步骤五：发布路由
在R2上配置
[R2]bgp 64512
[R2-bgp]network 172.16.2.0 24
[R2-bgp]network 172.16.3.0 24
[R2-bgp]network 172.16.4.0 24
[R2-bgp]network 172.16.5.0 24
[R2-bgp]network 172.16.6.0 24
[R2-bgp]network 172.16.7.0 24检测：
display bgp routing-table
由于水平分割，因此路由表无法传递到R4上
做反射器
因此在R3上做反射器，将R2变为客户端
[R3]bgp 64512
[R3-bgp]peer 172.16.1.2 reflect-client 检测：
步骤六：完成优化1中的不能宣告问题
R1
[R1]int l 0
[R1-LoopBack0]ip add 1.1.1.1 24
[R1-LoopBack0]bgp 1
[R1-bgp]network 1.1.1.0 24
R2
[R2]ip route-static 1.1.1.1 32 12.1.1.1R8
[R8]INT L 0
[R8-LoopBack0]IP ADD 8.8.8.8 24
[R8-LoopBack0]q
[R8]bgp 3
[R8-bgp]network 8.8.8.0 24检测：
创建Tunnel隧道：
R1
interface Tunnel0/0/0
ip address 10.1.1.1 255.255.255.0
tunnel-protocol gre
source 1.1.1.1
destination 8.8.8.8
ip route-static 192.168.2.0 255.255.255.0 Tunnel0/0/0R8
[R8]int t 0/0/0
[R8-Tunnel0/0/0]tunnel-protocol gre
[R8-Tunnel0/0/0]ip add 10.1.1.2 24
[R8-Tunnel0/0/0]source 8.8.8.8
[R8-Tunnel0/0/0]description
[R8-Tunnel0/0/0]destination 1.1.1.1
[R8-Tunnel0/0/0]q
[R8]ip route-static 192.168.1.0 24 Tunnel 0/0/0检测：
步骤七：完成优化5
方法一：在R2上聚合
[R2]bgp 64512
[R2-bgp]aggregate 172.16.0.0 21 detail-suppressed 检测：
方法二：
在R2上配置
bgp 64512
undo network 172.16.2.0 255.255.255.0
undo network 172.16.3.0 255.255.255.0
undo network 172.16.4.0 255.255.255.0
undo network 172.16.5.0 255.255.255.0
undo network 172.16.6.0 255.255.255.0
undo network 172.16.7.0 255.255.255.0
undo aggregate 172.16.0.0 255.255.248.0 detail-suppressed
undo network 172.16.0.0 检测：
先写空接口防环路由：
[R2]ip route-static 172.16.0.0 21 NULL 0查看让R2路由表
直接在BGP中宣告
[R2]bgp 64512
[R2]network 172.16.0.0 21 检测：
实验完成
