BGP联盟

配置as100与as200之间的ebgp连接

sy

[Huawei]sy

[Huawei]sysname r1

[r1]un in en

[r1]int e0/0/0

[r1-Ethernet0/0/0]ip add 192.168.8.1 24

[r1-Ethernet0/0/0]un sh

[r1-Ethernet0/0/0]int e0/0/1

[r1-Ethernet0/0/1]ip add 192.168.1.2 24

[r1-Ethernet0/0/1]un sh

[r1]bgp 100

[r1-bgp]router-id 1.1.1.1

[r1-bgp]peer 192.168.1.1 as-number 200

[r1-bgp]ipv4

[r1-bgp]ipv4-family unicast

[r1-bgp-af-ipv4]net

[r1-bgp-af-ipv4]network 192.168.8.0 255.255.255.0

这里不要在confederate peer-as 命令加入r3 所属的子as号 因为r2和r3 之间没有直接连接 另外r2不是asbr 所以不需要配置修改来自r4的路由下一跳为自己的出接口

sy

[Huawei]sy

[Huawei]sysname r2

[r2]un ine

[r2]un in en

[r2]int e0/0/0

[r2-Ethernet0/0/0]ip add 192.168.2.2 24

[r2-Ethernet0/0/0]un sh

[r2-Ethernet0/0/0]q

[r2]bgp 65002

[r2-bgp]router-id 2.2.2.2

[r2-bgp]confederation id 200

[r2-bgp]confederation peer-as 65001

[r2-bgp]peer 192.168.2.1 as-number 65001

sy

[Huawei]sy r3

[r3]

[r3]int e0/0/0

[r3-Ethernet0/0/0]ip add 192.168.3.2 24

[r3-Ethernet0/0/0]un sh

[r3-Ethernet0/0/0]int e0/0/1

[r3-Ethernet0/0/1]ip add 192.168.7.2 24

[r3-Ethernet0/0/1]un sh

Info: Interface Ethernet0/0/1 is not shutdown.

[r3-Ethernet0/0/1]q

[r3]bgp 65003

[r3-bgp]router-id 3.3.3.3

[r3-bgp]confederation id 200

[r3-bgp]confederation peer-as 65001

[r3-bgp]peer 192.168.3.1 as-number 65001

sy

[Huawei]sy r4

[r4]un ine

[r4]un in en

[r4]int e0/0/1

[r4-Ethernet0/0/1]ip add 192.168.2.1 24

[r4-Ethernet0/0/1]int e0/0/0

[r4-Ethernet0/0/0]ip add 192.168.1.1 24

[r4-Ethernet0/0/0]un sh

[r4-Ethernet0/0/0]int g0/0/0

[r4-GigabitEthernet0/0/0]ip add 192.168.3.1 24

[r4-GigabitEthernet0/0/0]un sh

[r4-GigabitEthernet0/0/0]int g0/0/2

[r4-GigabitEthernet0/0/2]ip add 192.168.4.1 24

[r4-GigabitEthernet0/0/2]un sh

[r4-GigabitEthernet0/0/2]int g0/0/1

[r4-GigabitEthernet0/0/1]ip add 192.168.5.1 24

[r4-GigabitEthernet0/0/1]un sh

[r4-GigabitEthernet0/0/1]q

[r4]bgp 65001

[r4-bgp]router-id 4.4.4.4

[r4-bgp]confederation id 200（配置联盟id200）

[r4-bgp]confederation peer 65002 65003（指定与65001 属于同一个联盟的还有65002 65003）

[r4-bgp]peer 192.168.2.2 as-number 65002（指定r2为r4的ebgp对等体）

[r4-bgp]peer 192.168.3.2 as-number 65003（指定r3为r4的ebgp对等体）

[r4-bgp]ipv4

[r4-bgp-af-ipv4]peer 192.168.2.2 next-hop-local（指定再向r2进行路由发布吧下一跳设为自己的出接口ip地址）

[r4-bgp-af-ipv4]peer 192.168.3.2 next-hop-local

[r4-bgp-af-ipv4]q

[r4-bgp]peer 192.168.4.2 as-number 65001

[r4-bgp]peer 192.168.5.2 as-number 65001

[r4-bgp]ipv4

[r4-bgp]ipv4-family unicast

[r4-bgp-af-ipv4]peer 192.168.4.2 next-hop-local

[r4-bgp-af-ipv4]peer 192.168.5.2 next-hop-local

[r4-bgp-af-ipv4]q

[r4-bgp]peer 192.168.1.2 as-number 100

sy

[Huawei]sy r5

[r5]un in en

[r5]int e0/0/0

[r5-Ethernet0/0/0]ip add 192.168.7.1 24

[r5-Ethernet0/0/0]un sh

[r5-Ethernet0/0/0]int g0/0/0

[r5-GigabitEthernet0/0/0]ip add 192.168.4.2 24

[r5-GigabitEthernet0/0/0]un sh

Info: Interface GigabitEthernet0/0/0 is not shutdown.

[r5-GigabitEthernet0/0/0]int e0/0/1

[r5-Ethernet0/0/1]ip add 192.168.6.2 24

[r5-Ethernet0/0/1]un sh

[r5-Ethernet0/0/1]q

[r5]bgp 65001

[r5-bgp]router-id 5.5.5.5

[r5-bgp]peer 192.168.4.1 as-number 65001

[r5-bgp]peer 192.168.6.1 as-number 65001

sy

[Huawei]sy r6

[r6]int e0/0/1

[r6-Ethernet0/0/1]ip add 192.168.5.2 24

[r6-Ethernet0/0/1]un sh

Info: Interface Ethernet0/0/1 is not shutdown.

[r6-Ethernet0/0/1]int e0/0/0

[r6-Ethernet0/0/0]ip add 192.168.6.1 24

[r6-Ethernet0/0/0]un sh

Info: Interface Ethernet0/0/0 is not shutdown.

[r6-Ethernet0/0/0]q

[r6]bgp 65001

[r6-bgp]router-id 6.6.6.6

[r6-bgp]confederation id 200

[r6-bgp]peer 192.168.5.1 as-number 65001

[r6-bgp]peer 192.168.6.2 as-number 65001

配置好后 可以通过display bgp routing-table 192.168.8.0 命令查看r2的bgp路由表

可以发现r2已学习到为与r1的192.168.8.0网络的路由