华为BGP路由属性策略实验

BGP路由属性策略实验报告
1.实验环境

实验要求、

实现 路径控制 分别使用
AS-path
locprf
prefal
med 属性实现选路

R1-R2-R4
R1-R3_R4

实验思路
1.先配置好相应的ip地址，loopback 0，ospf，对等体

R1配置 配置ip，bgp邻居

sy

[Huawei]int g0/0/0
[Huawei-GigabitEthernet0/0/0]ip add 10.0.12.1 24
[Huawei-GigabitEthernet0/0/0]undo sh
[Huawei-GigabitEthernet0/0/0]q
[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]ip add 10.0.13.1 24
[Huawei-GigabitEthernet0/0/1]undo sh
[Huawei-GigabitEthernet0/0/1]q

[Huawei]int LoopBack 0
[Huawei-LoopBack0]ip add 1.1.1.1 32
[Huawei-LoopBack0]q
[Huawei]

[Huawei]bgp 100
[Huawei-bgp]router-id 1.1.1.1 建立相应的对等体
[Huawei-bgp]peer 10.0.12.2 as-number 200
[Huawei-bgp]peer 10.0.13.3 as-number 200

R2配置 对等体 bgp ip地址
Ospf

[Huawei]q
sy

[Huawei]int g0/0/0
[Huawei-GigabitEthernet0/0/0]ip add 10.0.12.2 24
[Huawei-GigabitEthernet0/0/0]undo sh
[Huawei-GigabitEthernet0/0/0]q

[Huawei]int g0/0/1 ^
[Huawei-GigabitEthernet0/0/1]ip add 10.0.24.2 24
[Huawei-GigabitEthernet0/0/1]undo sh
[Huawei-GigabitEthernet0/0/1]
[Huawei-GigabitEthernet0/0/1]q

[Huawei]int LoopBack 0
[Huawei-LoopBack0]ip add 2.2.2.2 32
[Huawei-LoopBack0]q

[Huawei]bgp 200 建立邻居关系
[Huawei-bgp]router-id 2.2.2.2
[Huawei-bgp]peer 10.0.12.1 as-number 100
[Huawei-bgp]peer 10.0.24.4 as-number 200
[Huawei-bgp]

Huawei]ospf 1 配置ospf宣告内部网段
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 10.0.24.0 0.0.0.255
[Huawei-ospf-1-area-0.0.0.0]

R3配置 IP地址 对等体 ospf

sy
[Huawei]int g0/0/0
[Huawei-GigabitEthernet0/0/0]ip add 10.0.13.3 24
[Huawei-GigabitEthernet0/0/0]undo sh
[Huawei-GigabitEthernet0/0/0]q

[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]ip add 10.0.34.3 24
[Huawei-GigabitEthernet0/0/1]undo sh
[Huawei-GigabitEthernet0/0/1]q

[Huawei]int LoopBack 0
[Huawei-LoopBack0]ip add 3.3.3.3 32
[Huawei-LoopBack0]q

[Huawei]bgp 200 建立对等体关系
[Huawei-bgp]router-id 3.3.3.3
[Huawei-bgp]peer 10.0.13.1 as-number 100
[Huawei-bgp]peer 10.0.34.4 as-number 200
[Huawei-bgp]q

[Huawei]ospf 1 宣告内部网段ospf
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 10.0.34.0 0.0.0.255
[Huawei-ospf-1-area-0.0.0.0]

R4配置

sy [Huawei]int g0/0/0 [Huawei-GigabitEthernet0/0/0]ip add 10.0.24.4 24 [Huawei-GigabitEthernet0/0/0]undo sh [Huawei-GigabitEthernet0/0/0]q

[Huawei]int g0/0/1
[Huawei-GigabitEthernet0/0/1]ip add 10.0.34.4 24
[Huawei-GigabitEthernet0/0/1]undo sh
[Huawei-GigabitEthernet0/0/1]q

[Huawei]int LoopBack 0
[Huawei-LoopBack0]ip add 4.4.4.4 32
[Huawei-LoopBack0]q

[Huawei]bgp 200 建立对等体
[Huawei-bgp]router-id 4.4.4.4
[Huawei-bgp]peer 10.0.24.2 as-number 200
[Huawei-bgp]peer 10.0.34.3 as-number 200
[Huawei-bgp]q

[Huawei]ospf 1 ospf内部宣告
[Huawei-ospf-1]area 0
[Huawei-ospf-1-area-0.0.0.0]network 10.0.24.0 0.0.0.255
[Huawei-ospf-1-area-0.0.0.0]network 10.0.34.0 0.0.0.255
[Huawei-ospf-1-area-0.0.0.0]q

步骤二
R2和R3配置配置IBGP下一跳可达

R2配置
[Huawei]bgp 200
[Huawei-bgp]peer 10.0.24.4 next-hop-local
[Huawei-bgp]

R3配置
[Huawei]bgp 200
[Huawei-bgp]peer 10.0.34.4 next-hop-local
[Huawei-bgp]

步骤三

R1和 R4在BGP里宣告自己的id 地址 然后查看

R1配
[Huawei]bgp 100
[Huawei-bgp]network 1.1.1.1 32
[Huawei-bgp]

R4宣告

[Huawei]
[Huawei]bgp 200
[Huawei-bgp]network 4.4.4.4 32
[Huawei-bgp]

查看命令 ，display bgp routing-table

步骤三，通过配置路由条属性使bgp选路控制变化

实验一 ： AS-path属性配置
注： 比较路径成本大小，小的为最佳路径
R2配置
[Huawei]route-policy yzq permit node 10 //创建名为yzq的路由策略
Info: New Sequence of this List.

[Huawei-route-policy]apply as-path 666 666 additive //设置as-path属性为666 666
[Huawei-route-policy]q

[Huawei]bgp 200 bgp应用策略
[Huawei-bgp]peer 10.0.24.4 route-policy yzq export
[Huawei-bgp]q

[Huawei]q
refresh bgp all import 刷新bgp属性

R4查看效果

做完清除AS-Path 好做下一个实验

R2
Huawei]bgp 200
[Huawei-bgp]undo peer 10.0.24.4 route-policy yzq export
[Huawei-bgp]

OK进入下一个实验

实验二

配置locprf
注：比较本地优先级大小，大的为最佳路径

R3配置
[Huawei]route-policy lzq permit node 10 //创建路由策略名lzq
Info: New Sequence of this List.
[Huawei-route-policy]apply local-preference 666 设置本地优先级为666
[Huawei-route-policy]q

[Huawei]bgp 200 应用lzq策略
[Huawei-bgp]peer 10.0.34.4 route-policy lzq export

[Huawei]q
refresh bgp all import 刷新bgp路由

R4查看效果

做完 R3清除Locprf配置 做好做下一个实验准备
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R3配置
[Huawei]bgp 200
[Huawei-bgp]undo peer 10.0.34.4 route-policy lzq export
[Huawei-bgp]

OK。完成准备做下一个实验

实验三

MED配置
注：比较MED值大小，小的为最佳路径

R2配置
[Huawei]route-policy qqq permit node 10 //创建qqq路由策略
Info: New Sequence of this List.

[Huawei-route-policy]apply cost + 300 //修改MED值为300
[Huawei-route-policy]q

[Huawei]bgp 200 //bgp应用策略
[Huawei-bgp]peer 10.0.12.1 route-policy qqq export
[Huawei-bgp]q

refresh bgp all import 刷新bgp路由

R1查看效果

完成

实验四

配置策略路由local-Preference
使流量分开走
192.168.1.0网段走R2路由器
192.168.2.0 网段走R3路由器

R1配置 创建2个loopback口，添加192.168.1.0和192.168.2.0网段再从bgp宣告出去

sy Enter system view, return user view with Ctrl+Z. [Huawei]int loopback 1 创建网段 [Huawei-LoopBack1]ip add 192.168.1.1 24 [Huawei-LoopBack1]q

[Huawei]int loopback 2 创建网段
[Huawei-LoopBack2]ip add 192.168.2.1 24
[Huawei-LoopBack2]q

[Huawei]bgp 100 宣告
[Huawei-bgp]network 192.168.1.0 24
[Huawei-bgp]network 192.168.2.0 24
[Huawei-bgp]

R4查看bgp路由表

R2配置路由策略LOCAL-preference使192.168.1.1网段走上面

[Huawei]
[Huawei]acl number 2000 创建acl 192.168.1.0网段
[Huawei-acl-basic-2000]rule permit source 192.168.1.0 0.0.0.255
[Huawei-acl-basic-2000]q

[Huawei]route-policy zzz permit node 10 //创建路由策略zzz 10
Info: New Sequence of this List.

[Huawei-route-policy]if-match acl 2000 //匹配acl 2000
[Huawei-route-policy]apply local-preference 2000 //设置加优先级2000
[Huawei-route-policy]q

[Huawei]route-policy zzz permit node 20 //创建路由策略 zzz 20
Info: New Sequence of this List.
[Huawei-route-policy]apply local-preference 1000 // 设置优先级1000
[Huawei-route-policy]q

[Huawei]bgp 200
[Huawei-bgp]peer 10.0.12.1 route-policy zzz import //应用规则
[Huawei-bgp]

R3配置路由策略LOCAL-preference使192.168.2.1网段走上面

[Huawei]acl 2000 //创建acl 2000 设置网段
[Huawei-acl-basic-2000]rule permit source 192.168.2.0 0.0.0.255
[Huawei-acl-basic-2000]q

[Huawei]route-policy ppp permit node 10 //创建策略ppp 10
Info: New Sequence of this List.

[Huawei-route-policy]if-match acl 2000 //匹配acl 2000
[Huawei-route-policy]apply local-preference 2000 //设置本地优先级2000
[Huawei-route-policy]q

[Huawei]route-policy ppp permit node 20 //创建策略 ppp 20
Info: New Sequence of this List.
[Huawei-route-policy]apply local-preference 1000 //设置本地优先级1000
[Huawei-route-policy]q

[Huawei]bgp 200 应用规则
[Huawei-bgp]peer 10.0.13.1 route-policy ppp import
[Huawei-bgp]q
[Huawei]

R4查看结果

完成