50、BGP配置實(shí)驗(yàn)之社團(tuán)屬性community-創(chuàng)新互聯(lián)

1、社團(tuán)屬性community解析

讓客戶(hù)滿(mǎn)意是我們工作的目標(biāo)，不斷超越客戶(hù)的期望值來(lái)自于我們對(duì)這個(gè)行業(yè)的熱愛(ài)。我們立志把好的技術(shù)通過(guò)有效、簡(jiǎn)單的方式提供給客戶(hù)，將通過(guò)不懈努力成為客戶(hù)在信息化領(lǐng)域值得信任、有價(jià)值的長(zhǎng)期合作伙伴，公司提供的服務(wù)項(xiàng)目有：國(guó)際域名空間、網(wǎng)站空間、營(yíng)銷(xiāo)軟件、網(wǎng)站建設(shè)、常德網(wǎng)站維護(hù)、網(wǎng)站推廣。

BGP社團(tuán)屬性community：

可開(kāi)啟：BGP社團(tuán)屬性community為可選屬性，默認(rèn)不識(shí)別?？赏ㄟ^(guò)命令開(kāi)啟：neighbor x.x.x.x send-community

傳遞性：BGP社團(tuán)屬性community只在鄰居有效，鄰居的鄰居不再有效，想要傳遞到鄰居的鄰居需配置neighbor x.x.x.x send-community

修改BGP社團(tuán)屬性community步驟：

ip prefix-list 1 permit 1.1.1.0/24

route-map COM permit 10

 match ip address prefix-list 1

 set community no-advertise 不傳給BGP鄰居

 set community no-export不傳出大AS

 set community local-AS 不傳出小AS

route-map COM permit 20

router bgp 1

 neighbor 12.1.1.2 send-community

 neighbor 12.1.1.2 route-map COM out

2、實(shí)驗(yàn)拓?fù)?/p>

3、基礎(chǔ)配置

R1配置

interface Loopback0

 ip address 1.1.1.1 255.255.255.0

interface Serial0/0

 ip address 12.1.1.1 255.255.255.0

router bgp 1

 no synchronization

 bgp router-id 1.1.1.1

 network 1.1.1.0 mask 255.255.255.0

 neighbor 12.1.1.2 remote-as 2

 neighbor 12.1.1.2 send-community

 no auto-summary

R2配置

interface Loopback0

 ip address 2.2.2.2 255.255.255.0

interface Serial0/0

 ip address 12.1.1.2 255.255.255.0

interface Serial0/1

 ip address 23.1.1.2 255.255.255.0

router ospf 110

 router-id 2.2.2.2

 network 2.2.2.0 0.0.0.255 area 0

 network 23.1.1.0 0.0.0.255 area 0

router bgp 64512

 no synchronization

 bgp router-id 2.2.2.2

 bgp confederation identifier 2

 neighbor 3.3.3.3 remote-as 64512

 neighbor 3.3.3.3 update-source Loopback0

 neighbor 3.3.3.3 next-hop-self

 neighbor 12.1.1.1 remote-as 1

 neighbor 3.3.3.3 send-community

 no auto-summary

R3配置

interface Loopback0

 ip address 3.3.3.3 255.255.255.0

interface Serial0/0

 ip address 34.1.1.3 255.255.255.0

interface Serial0/1

 ip address 23.1.1.3 255.255.255.0

router ospf 110

 router-id 3.3.3.3

 network 3.3.3.0 0.0.0.255 area 0

 network 23.1.1.0 0.0.0.255 area 0

 network 34.1.1.0 0.0.0.255 area 0

router bgp 64512

 no synchronization

 bgp router-id 3.3.3.3

 bgp confederation identifier 2

 bgp confederation peers 64513

 neighbor 2.2.2.2 remote-as 64512

 neighbor 2.2.2.2 update-source Loopback0

 neighbor 4.4.4.4 remote-as 64513

 neighbor 4.4.4.4 ebgp-multihop 255

 neighbor 4.4.4.4 update-source Loopback0

 neighbor 4.4.4.4 send-community

 no auto-summary

R4配置

interface Loopback0

 ip address 4.4.4.4 255.255.255.0

interface Serial0/0

 ip address 34.1.1.4 255.255.255.0

interface Serial0/1

 ip address 45.1.1.4 255.255.255.0

router ospf 110

 router-id 4.4.4.4

 network 4.4.4.0 0.0.0.255 area 0

 network 34.1.1.0 0.0.0.255 area 0

 network 45.1.1.0 0.0.0.255 area 0

router bgp 64513

 no synchronization

 bgp router-id 4.4.4.4

 bgp confederation identifier 2

 bgp confederation peers 64512

 neighbor 3.3.3.3 remote-as 64512

 neighbor 3.3.3.3 ebgp-multihop 255

 neighbor 3.3.3.3 update-source Loopback0

 neighbor 5.5.5.5 remote-as 64513

 neighbor 5.5.5.5 update-source Loopback0

 neighbor 5.5.5.5 send-community

 no auto-summary

R5配置

interface Loopback0

 ip address 5.5.5.5 255.255.255.0

interface Serial0/0

 ip address 56.1.1.5 255.255.255.0

interface Serial0/1

 ip address 45.1.1.5 255.255.255.0

router ospf 110

 router-id 5.5.5.5

 network 5.5.5.0 0.0.0.255 area 0

 network 45.1.1.0 0.0.0.255 area 0

router bgp 64513

 no synchronization

 bgp router-id 5.5.5.5

 bgp confederation identifier 2

 neighbor 4.4.4.4 remote-as 64513

 neighbor 4.4.4.4 update-source Loopback0

 neighbor 56.1.1.6 remote-as 6

 neighbor 56.1.1.6 send-community

 no auto-summary

R6配置

interface Loopback0

 ip address 6.6.6.6 255.255.255.0

interface Serial0/0

 ip address 56.1.1.6 255.255.255.0

router bgp 6

 no synchronization

 bgp router-id 6.6.6.6

 neighbor 56.1.1.5 remote-as 2

 no auto-summary

4、社團(tuán)屬性驗(yàn)證

ip prefix-list 1 seq 5 permit 1.1.1.0/24

route-map COM permit 10

 match ip address prefix-list 1

 set community no-advertise

route-map COM permit 20

router bgp 1

 neighbor 12.1.1.2 send-community

 neighbor 12.1.1.2 route-map COM out

ip prefix-list 1 seq 5 permit 1.1.1.0/24

route-map COM permit 10

 match ip address prefix-list 1

 set community no-export

route-map COM permit 20

router bgp 1

 neighbor 12.1.1.2 send-community

 neighbor 12.1.1.2 route-map COM out

ip prefix-list 1 seq 5 permit 1.1.1.0/24

route-map COM permit 10

 match ip address prefix-list 1

 set community local-AS

route-map COM permit 20

router bgp 1

 neighbor 12.1.1.2 send-community

 neighbor 12.1.1.2 route-map COM out

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