华为路由器BGP邻居详解

本篇文章为大家分享下华为路由BGP邻居的建立，主要包括三部分类容：
    BGP配置一：非直连邻居；
    BGP配置二：IBGP通过回环口建立邻居；
    BGP配置三：EBGP通过回环口建立邻居。

基本网络配置：

R1

sysname R1

interface g0/0/0

ip address 192.168.12.1 24

interface LoopBack 0

ip address 10.10.1.1 24

quit

R2

sysname R2

interface g0/0/1

ip address 192.168.12.2 24

interface g0/0/0

ip address 192.168.23.2 24

quit

interface LoopBack 0

ip address 10.10.2.2 24

quit

R3

sysname R3

interface g0/0/1

ip address 192.168.23.3 24

interface g0/0/0

ip address 192.168.34.3 24

quit

R4

sysname R4

interface g0/0/1

ip address 192.168.34.4 24

interface g0/0/0

ip address 192.168.45.4 24

quit

R5

sysname R5

interface g0/0/1

ip address 192.168.45.5 24

interface g0/0/0

ip address 192.168.56.5 24

quit

interface LoopBack 0

ip address 10.10.5.5 24

quit

R6

sysname R6

interface g0/0/1

ip address 192.168.56.6 24

interface LoopBack 0

ip address 10.10.6.6 24

quit

OSPF配置：

R2

ospf 1 router-id 2.2.2.2

area 0

network 192.168.23.0 0.0.0.255

network 10.10.2.0 0.0.0.255

quit

quit

R3

ospf 1 router-id 3.3.3.3

area 0

network 192.168.23.0 0.0.0.255

network 192.168.34.0 0.0.0.255

quit

quit

R4

ospf 1 router-id 4.4.4.4

area 0

network 192.168.45.0 0.0.0.255

network 192.168.34.0 0.0.0.255

quit

quit

R5

ospf 1 router-id 5.5.5.5

area 0

network 192.168.45.0 0.0.0.255

network 10.10.5.0 0.0.0.255

quit

quit

BGP配置一：非直连邻居

R1

bgp 100

router-id 1.1.1.1

peer 192.168.12.2 as-number 200

network 10.10.1.0 255.255.255.0

quit

R2

bgp 200

router-id 2.2.2.2

peer 192.168.12.1 as-number 100

peer 192.168.45.5 as-number 200

quit

R5

bgp 200

router-id 5.5.5.5

peer 192.168.23.2 as-number 200

peer 192.168.56.6 as-number 600

quit

R6

bgp 600

router-id 6.6.6.6

peer 192.168.56.5 as-number 200

network 10.10.6.0 255.255.255.0

quit

R2

bgp 200

peer 192.168.45.5 next-hop-local

#发送路由下一跳地址改为本地

R5

bgp 200

peer 192.168.23.2 next-hop-local

BGP配置二：IBGP通过回环口建立邻居

R2-------R5

10.10.2.2 <------> 10.10.5.5

R2

bgp 200

undo peer 192.168.45.5

peer 10.10.5.5 as-number 200

peer 10.10.5.5 connect-interface LoopBack0

quit

#IBGP的更新源检测机制（一个邻居上面敲即可）

R5

bgp 200

undo peer 192.168.23.2

peer 10.10.2.2 as-number 200

peer 10.10.2.2 connect-interface LoopBack0

quit

BGP配置三：EBGP通过回环口建立邻居

R1------------R2

10.10.11.1 <-------> 10.10.22.2

R1

interface GigabitEthernet 0/0/2

ip address 192.168.21.1 24

interface LoopBack 12

ip address 10.10.11.1 24

quit

ip route-static 10.10.22.0 255.255.255.0 192.168.12.2

ip route-static 10.10.22.0 255.255.255.0 192.168.21.2

R2

interface GigabitEthernet 0/0/2

ip address 192.168.21.2 24

interface LoopBack 12

ip address 10.10.22.2 24

quit

ip route-static 10.10.11.0 255.255.255.0 192.168.12.1

ip route-static 10.10.11.0 255.255.255.0 192.168.21.1

R1

bgp 100

undo peer 192.168.12.2

peer 10.10.22.2 as-number 200

peer 10.10.22.2 connect-interface LoopBack 12

peer 10.10.22.2 ebgp-max-hop 2

#修改TTL值>1，跳过ebgp直连检测机制（两边都得敲）

R2

bgp 200

undo peer 192.168.12.1

peer 10.10.11.1 as-number 100

peer 10.10.11.1 connect-interface LoopBack 12

peer 10.10.11.1 ebgp-max-hop 2