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手把手教你华为OSPF、BGP路由反射器配置方法

来源:济南磐龙笔记本交换机维修作者:济南磐龙华为交换机维修网址:http://www.pldtwx.com


手把手教你华为OSPFBGP路由反射器配置方法



对于网络工程师而言,OSPFBGP的重要性不言而喻,本篇文章我们就来回顾下OSPFBGP的配置技巧,重点如下

1.熟悉DHCP配置;

2.熟悉OSFP配置;

3.BGP路由反射器配置

入下图所示,要求如下:

1.网络拓扑规划如图所示;

2.PC1PC2PC3全部自动获取ip地址;

3.R1R2R3之间运行osfp保证网络的联通性;

4.PC1PC2PC3之间网络互通


手把手教你华为OSPF、BGP路由反射器配置方法



华为OSPFBGP路由反射器配置详解


第一步 配置OSPF保证路由器直接网络连通性

R1配置如下:

[R1]dhcp enable

Info: The operation may take a few seconds. Please wait for a moment.done.

[R1]interface g0/0/2

[R1-GigabitEthernet0/0/2]ip address 192.168.1.254 24

[R1-GigabitEthernet0/0/2]dhcp select interface

[R1]interface g0/0/0

[R1-GigabitEthernet0/0/0]ip address 192.168.12.1 24

[R1-GigabitEthernet0/0/0]q

[R1]interface LoopBack 0

[R1-LoopBack0]ip address 10.10.1.1 24

[R1-LoopBack0]q

[R1-ospf-1]area 0

[R1-ospf-1-area-0.0.0.0]network 192.168.12.0 0.0.0.255

[R1-ospf-1-area-0.0.0.0]network 10.10.1.1 255.255.255.255

R2配置如下:

[R2]dhcp enable

Info: The operation may take a few seconds. Please wait for a moment.done.

[R2]interface g0/0/2

[R2-GigabitEthernet0/0/2]ip address 192.168.2.254 24

[R2-GigabitEthernet0/0/2]dhcp select interface

[R2]interface g0/0/1

[R2-GigabitEthernet0/0/1]ip address 192.168.12.2 24.

[R2-GigabitEthernet0/0/1]q

[R2]interface g0/0/0

[R2-GigabitEthernet0/0/0]ip address 192.168.23.2 24.

[R2-GigabitEthernet0/0/0]q

[R2]interface LoopBack 0

[R2-LoopBack0]ip address 10.10.2.2 24

[R2-LoopBack0]q

[R2-ospf-1]area 0

[R2-ospf-1-area-0.0.0.0]network 192.168.12.0 0.0.0.255

[R2-ospf-1-area-0.0.0.0]network 192.168.23.0 0.0.0.255

[R2-ospf-1-area-0.0.0.0]network 10.10.2.2 255.255.255.255

R3配置如下:

[R2]dhcp enable

Info: The operation may take a few seconds. Please wait for a moment.done.

[R3]interface g0/0/2

[R3-GigabitEthernet0/0/2]ip address 192.168.3.254 24

[R3-GigabitEthernet0/0/2]dhcp select interface

[R3]interface g0/0/1

[R3-GigabitEthernet0/0/1]ip address 192.168.23.3 24

[R3]interface LoopBack 0

[R3-LoopBack0]ip address 10.10.3.3 24

[R3-LoopBack0]q

[R3-ospf-1]area 0

[R3-ospf-1-area-0.0.0.0]network 192.168.23.0 0.0.0.255

[R3-ospf-1-area-0.0.0.0]network 10.10.3.3 255.255.255.255

测试路由器直接连通性:

R1ping路由器R3,网络互通

[R1]ping 10.10.3.3

PING 10.10.3.3: 56 data bytes, press CTRL_C to break

Reply from 10.10.3.3: bytes=56 Sequence=1 ttl=254 time=40 ms

Reply from 10.10.3.3: bytes=56 Sequence=2 ttl=254 time=20 ms

Reply from 10.10.3.3: bytes=56 Sequence=3 ttl=254 time=30 ms

Reply from 10.10.3.3: bytes=56 Sequence=4 ttl=254 time=30 ms

Reply from 10.10.3.3: bytes=56 Sequence=5 ttl=254 time=50 ms

--- 10.10.3.3 ping statistics ---

5 packet(s) transmitted

5 packet(s) received

0.00% packet loss

round-trip min/avg/max = 20/34/50 ms

第二步 配置bgp

R1配置如下

[R1]bgp

[R1]bgp 64512

[R1-bgp]peer 10.10.2.2 as-number 64512

[R1-bgp]peer 10.10.2.2 connect-interface LoopBack 0

[R1-bgp]import-route direct

[R1-bgp]router-id 1.1.1.1

R2配置如下

[R2]bgp 64512

[R2-bgp]router-id 2.2.2.2

[R2-bgp]peer 10.10.1.1 as-number 64512

[R2-bgp]peer 10.10.1.1 connect-interface LoopBack 0

[R2-bgp]peer 10.10.3.3 as-number 64512

[R2-bgp]peer 10.10.3.3 connect-interface LoopBack 0

[R2-bgp]import-route direct

R3配置如下

[R3]bgp

[R3]bgp 64512

[R3-bgp]peer 10.10.2.2 as-number 64512

[R3-bgp]peer 10.10.2.2 connect-interface LoopBack 0

[R3-bgp]import-route direct

[R3-bgp]router-id 3.3.3.3

此时查看R1bgp路由表和R3的路由表如下;

bgp路由表

[R1]display 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: 12

Network NextHop MED LocPrf PrefVal Path/Ogn

> 10.10.1.0/24 0.0.0.0 0 0 ?

> 10.10.1.1/32 0.0.0.0 0 0 ?

>i 10.10.2.0/24 10.10.2.2 0 100 0 ?

> 127.0.0.0 0.0.0.0 0 0 ?

> 127.0.0.1/32 0.0.0.0 0 0 ?

> 192.168.1.0 0.0.0.0 0 0 ?

> 192.168.1.254/32 0.0.0.0 0 0 ?

>i 192.168.2.0 10.10.2.2 0 100 0 ?

*> 192.168.12.0 0.0.0.0 0 0 ?

i 10.10.2.2 0 100 0 ?

> 192.168.12.1/32 0.0.0.0 0 0 ?

>i 192.168.23.0 10.10.2.2 0 100 0 ?

[R3]dis ip routing-table

Route Flags: R - relay, D - download to fib

Routing Tables: Public

Destinations : 18 Routes : 18

Destination/Mask Proto Pre Cost Flags NextHop Interface


 10.10.1.1/32  OSPF    10   2           D   192.168.23.2    GigabitEthernet

0/0/1

10.10.2.0/24 IBGP 255 0 RD 10.10.2.2 GigabitEthernet

0/0/1

10.10.2.2/32 OSPF 10 1 D 192.168.23.2 GigabitEthernet

0/0/1

10.10.3.0/24 Direct 0 0 D 10.10.3.3 LoopBack0

10.10.3.3/32 Direct 0 0 D 127.0.0.1 LoopBack0

10.10.3.255/32 Direct 0 0 D 127.0.0.1 LoopBack0

127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

192.168.2.0/24 IBGP 255 0 RD 10.10.2.2 GigabitEthernet

0/0/1

192.168.3.0/24 Direct 0 0 D 192.168.3.254 GigabitEthernet

0/0/2

192.168.3.254/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/2

192.168.3.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/2

192.168.12.0/24 OSPF 10 2 D 192.168.23.2 GigabitEthernet

0/0/1

192.168.23.0/24 Direct 0 0 D 192.168.23.3 GigabitEthernet

0/0/1

192.168.23.3/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/1

192.168.23.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/1

255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0


可以总结如下,可以看到,由于IBGP 遵守水平分割规则,R2不能将学习到的路由互相转发,造成R1R3不能学习到对方的路由。PC1PC2不能ping通。

R2上配置路由反射器,使R1R3成为了R2路由反射器配置如下

[R2]bgp 64512

[R2-bgp]peer 10.10.1.1 reflect-client

[R2-bgp]peer 10.10.3.3 reflect-client

R1的路由表和bgp路由表如下:

[R1]display 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: 14

Network NextHop MED LocPrf PrefVal Path/Ogn


> 10.10.1.0/24 0.0.0.0 0 0 ?

> 10.10.1.1/32 0.0.0.0 0 0 ?

>i 10.10.2.0/24 10.10.2.2 0 100 0 ?

>i 10.10.3.0/24 10.10.3.3 0 100 0 ?

> 127.0.0.0 0.0.0.0 0 0 ?

> 127.0.0.1/32 0.0.0.0 0 0 ?

> 192.168.1.0 0.0.0.0 0 0 ?

> 192.168.1.254/32 0.0.0.0 0 0 ?

>i 192.168.2.0 10.10.2.2 0 100 0 ?

>i 192.168.3.0 10.10.3.3 0 100 0 ?

*> 192.168.12.0 0.0.0.0 0 0 ?


i 10.10.2.2 0 100 0 ?

> 192.168.12.1/32 0.0.0.0 0 0 ?

>i 192.168.23.0 10.10.2.2 0 100 0 ?

[R1]dis ip ro

[R1]dis ip routing-table

Route Flags: R - relay, D - download to fib

Routing Tables: Public

Destinations : 20 Routes : 20

Destination/Mask Proto Pre Cost Flags NextHop Interface


手把手教你华为OSPF、BGP路由反射器配置方法



 10.10.1.0/24  Direct  0    0           D   10.10.1.1       LoopBack0

 10.10.1.1/32  Direct  0    0           D   127.0.0.1       LoopBack0

10.10.1.255/32  Direct  0    0           D   127.0.0.1       LoopBack0

 10.10.2.0/24  IBGP    255  0          RD   10.10.2.2       GigabitEthernet

0/0/0

10.10.2.2/32 OSPF 10 1 D 192.168.12.2 GigabitEthernet




0/0/0

10.10.3.0/24 IBGP 255 0 RD 10.10.3.3 GigabitEthernet

0/0/0

10.10.3.3/32 OSPF 10 2 D 192.168.12.2 GigabitEthernet

0/0/0

127.0.0.0/8 Direct 0 0 D 127.0.0.1 InLoopBack0

127.0.0.1/32 Direct 0 0 D 127.0.0.1 InLoopBack0

127.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0

192.168.1.0/24 Direct 0 0 D 192.168.1.254 GigabitEthernet

0/0/2

192.168.1.254/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/2

192.168.1.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/2

192.168.2.0/24 IBGP 255 0 RD 10.10.2.2 GigabitEthernet

0/0/0

192.168.3.0/24 IBGP 255 0 RD 10.10.3.3 GigabitEthernet

0/0/0

192.168.12.0/24 Direct 0 0 D 192.168.12.1 GigabitEthernet

0/0/0

192.168.12.1/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/0

192.168.12.255/32 Direct 0 0 D 127.0.0.1 GigabitEthernet

0/0/0

192.168.23.0/24 OSPF 10 2 D 192.168.12.2 GigabitEthernet

0/0/0

255.255.255.255/32 Direct 0 0 D 127.0.0.1 InLoopBack0


可以总结看到,路由反射器将从客户处学到的路由转发给除此客户外的所有的客户,R1R3可以学习到对方的路由。PC1PC3可以ping通。

测试PC1PC2PC3网络互通

PC>ping 192.168.3.253

Ping 192.168.3.253: 32 data bytes, Press Ctrl_C to break

From 192.168.3.253: bytes=32 seq=1 ttl=125 time=31 ms

From 192.168.3.253: bytes=32 seq=2 ttl=125 time=32 ms

From 192.168.3.253: bytes=32 seq=3 ttl=125 time=31 ms

From 192.168.3.253: bytes=32 seq=4 ttl=125 time=15 ms

From 192.168.3.253: bytes=32 seq=5 ttl=125 time=32 ms


配置成功!!!!


济南磐龙笔记本交换机维修,专业芯片级维修服务商  www.pldtwx.com

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