0x12 HCNP-R&S BGP路由策略实验（华为eNSP）

Myth丶恋晨 2022-05-14 07:19 370阅读 0赞

# 实验拓扑 #

![70][]

### IP基本配置  ###

**AR4**

<Huawei>sys
    Enter system view, return user view with Ctrl+Z.
    [Huawei]un in en
    Info: Information center is disabled.
    [Huawei]sys AR4
    [AR4]inter l 1
    [AR4-LoopBack1]ip add 192.168.1.1 24
    [AR4-LoopBack1]inter l 2
    [AR4-LoopBack2]ip add 192.168.2
    [AR4]inter g0/0/0
    [AR4-GigabitEthernet0/0/0]ip add 1.1.1.1 24
    [AR4-GigabitEthernet0/0/0]inter g0/0/1
    [AR4-GigabitEthernet0/0/1]ip add 2.2.2.1 24

**AR1**

<Huawei>sys
    Enter system view, return user view with Ctrl+Z.
    [Huawei]un in en
    Info: Information center is disabled.
    [Huawei]sys AR1
    [AR1]inter g0/0/0
    [AR1-GigabitEthernet0/0/0]ip add 1.1.1.2 24
    [AR1-GigabitEthernet0/0/0]inter g0/0/1
    [AR1-GigabitEthernet0/0/1]ip add 3.3.3.1 24

**AR2**

<Huawei>sys
    Enter system view, return user view with Ctrl+Z.
    [Huawei]un in en
    Info: Information center is disabled.
    [Huawei]sys AR2
    [AR2]inter g0/0/0
    [AR2-GigabitEthernet0/0/0]ip  add 2.2.2.2 24
    [AR2-GigabitEthernet0/0/0]inte g0/0/1
    [AR2-GigabitEthernet0/0/1]ip add 4.4.4.1 24

**AR3**

<Huawei>sys 
    Enter system view, return user view with Ctrl+Z.
    [Huawei]un in en
    Info: Information center is disabled.
    [Huawei]sys AR3
    [AR3]inte g0/0/0
    [AR3-GigabitEthernet0/0/0]ip add 3.3.3.2 24
    [AR3-GigabitEthernet0/0/0]inter g0/0/1
    [AR3-GigabitEthernet0/0/1]ip add 4.4.4.2 24
    [AR3-GigabitEthernet0/0/1]inte l 1
    [AR3-LoopBack1]ip add 172.16.1.1 24
    [AR3-LoopBack1]inter l 2
    [AR3-LoopBack2]ip ad 172.16.2.1 24

### BGP基本配置 ###

**AR4**

[AR4]bgp 100
    [AR4-bgp]peer 1.1.1.2 as-number 200
    [AR4-bgp]peer 2.2.2.2 as-number 200

**AR1**

[AR1]bgp 200
    [AR1-bgp]peer 1.1.1.1 as-number 100
    [AR1-bgp]peer 3.3.3.2 as-number 200
    [AR1-bgp]peer 4.4.4.1 as-number 200

**AR2**

[AR2] bgp 200
    [AR2-bgp]peer 2.2.2.1 as 100
    [AR2-bgp]peer 3.3.3.1 as 200
    [AR2-bgp]peer 4.4.4.2 as 200

**AR3**

[AR3]bgp 200
    [AR3-bgp]peer 3.3.3.1 as 200
    [AR3-bgp]peer 4.4.4.1 as 200

**BGP引入**

**AR4**

[AR4]bgp 100
    [AR4-bgp]import-route direct

**AR1**

[AR1]bgp 200
    [AR1-bgp]import-route direct

**AR2**

[AR2]bgp 200
    [AR2-bgp]import-route direct

**AR3**

[AR3]bg 200
    [AR3-bgp]import-route direct

### 查看BGP ###

display bgp peer

### 查看BGP路由表 ###

display bgp routing-table

![70 1][]

![70 2][]

**配置路由策略**

**AR1**

[AR1]acl 2001
    [AR1-acl-basic-2001]rule permit source 192.168.1.0 0.0.0.255
    [AR1-acl-basic-2001]quit
    [AR1]acl 2002
    [AR1-acl-basic-2002]rule permit source 192.168.2.0 0.0.0.255

AR1]route-policy yewu-1 permit node 10
    	
    [AR1-route-policy]if-match acl 2001	
    
    [AR1-route-policy]apply local-preference 200 //本地优先级设置为200
    
    AR1]route-policy yewu-1 permit node 20
    	
    [AR1-route-policy]if-match acl 2002	
    
    [AR1-route-policy]apply local-preference 50 //本地优先级设置为50

[AR1]route-policy yewu-1 permit node 30//添加空节点

[AR1]bgp 200
    [AR1-bgp]peer 3.3.3.2 route-policy yewu-1 export

![70 3][]

![70 4][]

[AR2]acl 2001
    
    [AR2-acl-basic-2001]rule permit source 192.168.1.0 0.0.0.255
    
    [AR2-acl-basic-2001]q
    [AR2]acl 2002	
    [AR2-acl-basic-2002]rule permit source 192.168.2.0 0.0.0.255
    [AR2-acl-basic-2002]qu
    
    [AR2]route-policy yewu-2 permit node 10
    Info: New Sequence of this List.
    
    [AR2-route-policy]if-match acl 2001
    
    [AR2-route-policy]apply local-preference 50
    [AR2-route-policy]qu
    
    [AR2]route-policy yewu-2 permit node 20
    Info: New Sequence of this List.
    
    [AR2-route-policy]if-match acl 2002
    
    [AR2-route-policy]apply local-preference 200
    [AR2-route-policy]route-policy yewu-2 permit node 30
    Info: New Sequence of this List.
    [AR2-route-policy]qu

[AR2]bgp 200
    
    [AR2-bgp]peer 4.4.4.2 route-policy yewu-2 export

![70 5][]

--------------------

![70 6][]

[AR1]acl 2011
    [AR1-acl-basic-2011]rule permit source 172.16.1.0 0.0.0.255
    [AR1-acl-basic-2011]q
    
    [AR1]acl 2012
    [AR1-acl-basic-2012]rule permit source 172.16.2.0 0.0.0.255
    [AR1-acl-basic-2012]qu	
    
    [AR1]route-policy huawei-1 permit node 10
    [AR1-route-policy]if-match acl 2011
    [AR1-route-policy]apply cost 1000
    [AR1-route-policy]quit
    
    [AR1]route-policy huawei-1 permit node 20
    [AR1-route-policy]if-match acl 2012
    [AR1-route-policy]apply cost 200
    [AR1-route-policy]qu
    
    [AR1]route-policy huawei-1 permit node 30
    
    [AR1]bgp 200
    [AR1-bgp]peer 1.1.1.1 route-policy huawei-1 export

![70 7][]

[AR2]acl 2011
    [AR2-acl-basic-2011]rule permit source 172.16.1.0 0.0.0.255
    [AR2-acl-basic-2011]qu
    
    [AR2]acl 2012
    [AR2-acl-basic-2012]rule permit source 172.16.2.0 0.0.0.255
    [AR2-acl-basic-2012]qu
    
    [AR2]route-policy huawei-2 permit node 10
    [AR2-route-policy]if-match acl 2011
    [AR2-route-policy]apply cost 2000
    [AR2-route-policy]qu
    
    [AR2]route-policy huawei-2 permit node 20
    [AR2-route-policy]if-match acl 2012
    [AR2-route-policy]apply cost 1000
    [AR2-route-policy]qu
    
    [AR2]route-policy huawei-2 permit node 30
    
    [AR2]bgp 200
    [AR2-bgp]peer 2.2.2.1 route-policy huawei-2 export

![70 8][]

[70]: /images/20220514/4d8e9ba6b9154fd79e04bfb4d35e90d4.png
[70 1]: /images/20220514/d21634901a51438c9b849cba483b1c6b.png
[70 2]: /images/20220514/4e80eaab607244c0a6d5fa1e023a78d8.png
[70 3]: /images/20220514/a6aea3a9648f44f6a79becc37d0fe623.png
[70 4]: /images/20220514/c597d2bbbce946509e0661ccefe8e0c3.png
[70 5]: /images/20220514/fe396a1855084bb992d7158948af208d.png
[70 6]: /images/20220514/31dcdb8b401243b5805a7865b1256eef.png
[70 7]: /images/20220514/16917807636d4d408b75b16d344052f0.png
[70 8]: /images/20220514/f53c8e6e48994b1eba5ed26a385ebf04.png