HuaWei ❀ 配置BGP团体属性

配置BGP团体属性

如下图所示，R2分别与R1、R3建立EBGP连接，要求AS 1发布到AS 2中的路由不能发布到其他AS中；

配置接口IP地址：

[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip address 12.1.1.1 24
配置类似，不做阐述；

配置BGP：

[r1]bgp 1
[r1-bgp]router-id 1.1.1.1
[r1-bgp]peer 12.1.1.2 as-number 2

[r2]bgp 2
[r2-bgp]router-id 2.2.2.2
[r2-bgp]peer 12.1.1.1 as-number 1
[r2-bgp]peer 23.1.1.2 as-number 3

[r3]bgp 3   
[r3-bgp]router-id 3.3.3.3
[r3-bgp]peer 23.1.1.1 as-number 2

配置BGP团体属性：

[r1]route-policy aaa permit node 5
[r1-route-policy]apply community ?   
   
  INTEGER<0-4294967295>  Specify community number
  STRING<3-11>           Specify aa<0-65535>:nn<0-65535>
  internet               Internet(well-known community attributes)
  no-advertise           Do not advertise to any peer (well-known community     attributes)
  no-export              Do not export to external peers(well-known community   attributes)
  no-export-subconfed    Do not send outside a sub-confederation(well-known     community attributes)
  none                   No community attribute

[r1-route-policy]apply community no-export          

[r1]bgp 1
[r1-bgp]ipv4-family unicast 
[r1-bgp-af-ipv4]peer 12.1.1.2 route-policy aaa export 
[r1-bgp-af-ipv4]peer 12.1.1.2 advertise-community

查看配置结果：

[r2]display bgp routing-table 1.1.1.1

 BGP local router ID : 2.2.2.2
 Local AS number : 2
 Paths:   1 available, 1 best, 1 select
 BGP routing table entry information of 1.1.1.0/24:
 From: 12.1.1.1 (1.1.1.1)
 Route Duration: 00h01m08s  
 Direct Out-interface: GigabitEthernet0/0/0
 Original nexthop: 12.1.1.1
 Qos information : 0x0
 Community:no-export
 AS-path 1, origin igp, MED 0, pref-val 0, valid, external, best, select, active, pre 255
 Not advertised to any peer yet