BGP-1 基础的配置

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如下图实现 AS100 100.1.1.1/24 与 AS300通信
技术分享图片

AR1配置：

interface GigabitEthernet0/0/0
ip address 12.12.12.1 255.255.255.0

interface GigabitEthernet0/0/1
ip address 13.13.13.1 255.255.255.0

interface NULL0

interface LoopBack0
ip address 100.1.1.1 255.255.255.0

interface LoopBack100
ip address 100.1.1.1 255.255.255.0

bgp 100 //配置BGP进程 100
peer 2.2.2.2 as-number 200 配置对等体
peer 2.2.2.2 ebgp-max-hop 255 //ebgp默认为1跳，多等于2跳建立邻居
peer 2.2.2.2 connect-interface LoopBack0 //用本地回环口建立邻居
peer 3.3.3.3 as-number 200
peer 3.3.3.3 ebgp-max-hop 255
peer 3.3.3.3 connect-interface LoopBack0
group as200 internal

ipv4-family unicast
undo synchronization
network 100.1.1.0 255.255.255.0
peer 2.2.2.2 enable
peer 3.3.3.3 enable
peer as200 enable

ip route-static 2.2.2.0 255.255.255.0 12.12.12.2 实现回环口通信建立邻居
ip route-static 3.3.3.0 255.255.255.0 13.13.13.3

user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20

wlan ac

return

AR2配置：

interface GigabitEthernet0/0/0
ip address 12.12.12.2 255.255.255.0

interface GigabitEthernet0/0/1
ip address 24.24.24.2 255.255.255.0

interface NULL0

interface LoopBack0
ip address 2.2.2.2 255.255.255.0

bgp 200
peer 1.1.1.1 as-number 100
peer 1.1.1.1 ebgp-max-hop 255
peer 1.1.1.1 connect-interface LoopBack0
peer 4.4.4.4 as-number 200
peer 4.4.4.4 connect-interface LoopBack0
peer 5.5.5.5 as-number 200

ipv4-family unicast
undo synchronization
peer 1.1.1.1 enable
peer 4.4.4.4 enable
peer 4.4.4.4 next-hop-local
peer 5.5.5.5 enable
peer 5.5.5.5 next-hop-local

ospf 1
area 0.0.0.0
network 2.2.2.2 0.0.0.0
network 24.24.24.2 0.0.0.0

ip route-static 1.1.1.0 255.255.255.0 12.12.12.1

user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20

wlan ac

return

AR3配置：

interface GigabitEthernet0/0/0
ip address 34.34.34.3 255.255.255.0

interface GigabitEthernet0/0/1
ip address 13.13.13.3 255.255.255.0

interface NULL0

interface LoopBack0
ip address 3.3.3.3 255.255.255.0

bgp 200
peer 1.1.1.1 as-number 100
peer 1.1.1.1 ebgp-max-hop 255
peer 1.1.1.1 connect-interface LoopBack0
peer 4.4.4.4 as-number 200
peer 4.4.4.4 connect-interface LoopBack0
peer 5.5.5.5 as-number 200

ipv4-family unicast
undo synchronization
peer 1.1.1.1 enable
peer 4.4.4.4 enable
peer 4.4.4.4 next-hop-local
peer 5.5.5.5 enable
peer 5.5.5.5 next-hop-local

ospf 1
area 0.0.0.0
description isthis
network 3.3.3.3 0.0.0.0
network 34.34.34.3 0.0.0.0

ip route-static 1.1.1.0 255.255.255.0 13.13.13.1

user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20

wlan ac

return

AR4配置：

interface GigabitEthernet0/0/0
ip address 34.34.34.4 255.255.255.0

interface GigabitEthernet0/0/1
ip address 24.24.24.4 255.255.255.0

interface GigabitEthernet1/0/0
ip address 45.45.45.3 255.255.255.0

interface NULL0

interface LoopBack0
ip address 4.4.4.4 255.255.255.0

bgp 200
peer 2.2.2.2 as-number 200
peer 2.2.2.2 connect-interface LoopBack0
peer 3.3.3.3 as-number 200
peer 3.3.3.3 connect-interface LoopBack0
peer 5.5.5.5 as-number 200
peer 5.5.5.5 connect-interface LoopBack0
group as200 internal

ipv4-family unicast
undo synchronization
peer 2.2.2.2 enable
peer 3.3.3.3 enable
peer 5.5.5.5 enable
peer as200 enable

ospf 1
area 0.0.0.0
network 0.0.0.0 255.255.255.255

user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20

wlan ac

return

AR5配置：

interface GigabitEthernet0/0/0
ip address 65.65.65.5 255.255.255.0

interface GigabitEthernet0/0/1
ip address 56.56.56.5 255.255.255.0

interface GigabitEthernet1/0/0
ip address 45.45.45.5 255.255.255.0

interface NULL0

interface LoopBack0
ip address 5.5.5.5 255.255.255.0

bgp 200
peer 2.2.2.2 as-number 200
peer 2.2.2.2 connect-interface LoopBack0
peer 3.3.3.3 as-number 200
peer 3.3.3.3 connect-interface LoopBack0
peer 4.4.4.4 as-number 200
peer 4.4.4.4 connect-interface LoopBack0
peer 6.6.6.6 as-number 300
peer 6.6.6.6 ebgp-max-hop 255
peer 6.6.6.6 connect-interface LoopBack0

ipv4-family unicast
undo synchronization
peer 2.2.2.2 enable
peer 2.2.2.2 next-hop-local
peer 3.3.3.3 enable
peer 3.3.3.3 next-hop-local
peer 4.4.4.4 enable
peer 4.4.4.4 next-hop-local
peer 6.6.6.6 enable

ospf 1
area 0.0.0.0
network 5.5.5.5 0.0.0.0
network 45.45.45.5 0.0.0.0

ip route-static 6.6.6.0 255.255.255.0 56.56.56.6
ip route-static 6.6.6.0 255.255.255.0 65.65.65.6

user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20

wlan ac

return

AR6配置：

interface GigabitEthernet0/0/0

ip address 65.65.65.6 255.255.255.0

interface GigabitEthernet0/0/1
ip address 56.56.56.6 255.255.255.0

interface NULL0

interface LoopBack0
ip address 6.6.6.6 255.255.255.0

interface LoopBack1
ip address 60.1.1.1 255.255.255.0

interface LoopBack2
ip address 60.1.2.1 255.255.255.0

interface LoopBack3
ip address 60.1.3.1 255.255.255.0

bgp 300
peer 5.5.5.5 as-number 200
peer 5.5.5.5 ebgp-max-hop 255
peer 5.5.5.5 connect-interface LoopBack0

ipv4-family unicast
undo synchronization
network 60.1.1.0 255.255.255.0
network 60.1.2.0 255.255.255.0
network 60.1.3.0 255.255.255.0
peer 5.5.5.5 enable

ip route-static 5.5.5.0 255.255.255.0 56.56.56.5
ip route-static 5.5.5.0 255.255.255.0 65.65.65.5

user-interface con 0
authentication-mode password
user-interface vty 0 4
user-interface vty 16 20

wlan ac

return

AR1与AR6 通信

技术分享图片

附上BGP 检查命令

<Huawei>dis bgp peer

BGP local router ID : 1.1.1.1
Local AS number : 100
Total number of peers : 2 Peers in established state : 2

Peer V AS MsgRcvd MsgSent OutQ Up/Down State PrefRcv

2.2.2.2 4 200 8 9 0 00:05:06 Established 3
3.3.3.3 4 200 7 8 0 00:05:00 Established 3
<Huawei>

<Huawei>dis bgp routing-table

BGP Local router ID is 1.1.1.1
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete

Total Number of Routes: 7
Network NextHop MED LocPrf PrefVal Path/Ogn

*> 60.1.1.0/24 2.2.2.2 0 200 300i

  • 3.3.3.3 0 200 300i
    *> 60.1.2.0/24 2.2.2.2 0 200 300i
  • 3.3.3.3 0 200 300i
    *> 60.1.3.0/24 2.2.2.2 0 200 300i
  • 3.3.3.3 0 200 300i
    *> 100.1.1.0/24 0.0.0.0 0 0 i
    <Huawei>

<Huawei>dis current-configuration configuration bgp
[V200R003C00]
#
bgp 100
peer 2.2.2.2 as-number 200
peer 2.2.2.2 ebgp-max-hop 255
peer 2.2.2.2 connect-interface LoopBack0
peer 3.3.3.3 as-number 200
peer 3.3.3.3 ebgp-max-hop 255
peer 3.3.3.3 connect-interface LoopBack0
group as200 internal
#
ipv4-family unicast
undo synchronization
network 100.1.1.0 255.255.255.0
peer 2.2.2.2 enable
peer 3.3.3.3 enable
peer as200 enable
#
return
<Huawei>

<Huawei>dis ip routing-table protocol bgp
Route Flags: R - relay, D - download to fib
Public routing table : BGP
Destinations : 3 Routes : 3

BGP routing table status : <Active>
Destinations : 3 Routes : 3

Destination/Mask Proto Pre Cost Flags NextHop Interface

   60.1.1.0/24  EBGP    255  0          RD   2.2.2.2         GigabitEthernet0/0/0
   60.1.2.0/24  EBGP    255  0          RD   2.2.2.2         GigabitEthernet0/0/0
   60.1.3.0/24  EBGP    255  0          RD   2.2.2.2         GigabitEthernet0/0/0

BGP routing table status : <Inactive>
Destinations : 0 Routes : 0

<Huawei>

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