mpls-***(CE-PE,rip static)

最新推荐文章于 2025-08-21 15:48:57 发布

转载最新推荐文章于 2025-08-21 15:48:57 发布 · 139 阅读

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原文链接：http://blog.51cto.com/212492/37539

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#网络

本文详细介绍了一种典型的MPLS VPN配置流程，包括IGP配置、MPLS启用、VRF配置、动态路由协议应用等关键步骤。通过具体实例展示了如何在PE设备间建立MP-iBGP关系并实现不同网络间的路由重分布。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

实验步骤：

Setp1：在mpls backbone中完成IGP（ospf1）

Setp2：运行mpls在backbone中

Setp3：配置vrf在PE上，并且设置vrf的×××客户RD及RT

Setp4：为了让PE学习到CE的路由，所以应该在PE与CE之间运行动态路由协议（rip static bgp ospf）

Setp5：建立mp－ibgp关系在R2与R4之间

Setp6：将rip重分布进bgp中通过mp－ibgp传递（将路由从vrf中导出）

Setp7：再将mp－ibgp路由导入到所属于的vrf中，setp6～setp7通过重分布来完成。

R1(config)#int s2/1

R1(config-if)#ip add <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />12.0.0.1 255.255.255.0

R1(config-if)#no shu

R1(config-if)#int lo0

R1(config-if)#ip add 1.1.1.1 255.255.255.0

R1(config-if)#do ping 12.0.0.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.0.0.2, timeout is 2 seconds:

!!!!!

R1(config)#router rip

R1(config-router)#ver 2

R1(config-router)#no au

R1(config-router)#net 12.0.0.0

R1(config-router)#net 1.0.0.0

R1#sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Gateway of last resort is not set

1.0.0.0/24 is subnetted, 1 subnets

C 1.1.1.0 is directly connected, Loopback0

5.0.0.0/24 is subnetted, 1 subnets

R 5.5.5.0 [120/1] via 12.0.0.2, 00:00:10, Serial2/1

12.0.0.0/24 is subnetted, 1 subnets

C 12.0.0.0 is directly connected, Serial2/1

45.0.0.0/24 is subnetted, 1 subnets

R 45.0.0.0 [120/1] via 12.0.0.2, 00:00:10, Serial2/1

R1#conf t

Enter configuration commands, one per line. End with CNTL/Z.

R1(config)#no router rip

R1(config)#ip route 0.0.0.0 0.0.0.0 s2/1

R1#sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

1.0.0.0/24 is subnetted, 1 subnets

C 1.1.1.0 is directly connected, Loopback0

12.0.0.0/24 is subnetted, 1 subnets

C 12.0.0.0 is directly connected, Serial2/1

S* 0.0.0.0/0 is directly connected, Serial2/1

R1#ping 5.5.5.5

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 5.5.5.5, timeout is 2 seconds:

!!!!!

R2(config)#int s2/1

R2(config-if)#ip add 12.0.0.2 255.255.255.0

R2(config-if)#no shu

R2(config-if)#int s2/2

R2(config-if)#ip add 23.0.0.2 255.255.255.0

R2(config-if)#no shu

R2(config-if)#int lo0

R2(config-if)#ip add 2.2.2.2 255.255.255.255

Setp1：R3R4一样

R2(config)#router ospf 1

R2(config-router)#router-id 2.2.2.2

R2(config-router)#net 23.0.0.0 0.0.0.255 a 0

R2(config-router)#net 2.2.2.2 0.0.0.0 a 0

Setp2：

R2(config)#ip cef

R2(config)#mpls label range 200 299

R2(config)#mpls label protocol ldp

R2(config)#mpls ldp router-id lo0

R2(config)#int s2/2

R2(config-if)#mpls ip

Setp3：

R2(config)#ip vrf ABC

R2(config-vrf)#rd 100:20

R2(config-vrf)#route-target export 100:20

R2(config-vrf)#int s2/1

R2(config-if)#ip vrf forwarding ABC

% Interface Serial2/1 IP address 12.0.0.2 removed due to enabling VRF ABC

R2(config-if)#ip add 12.0.0.2 255.255.255.0

R2(config-if)#do ping vrf ABC 12.0.0.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.0.0.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 72/82/120 ms

R2(config-if)#exit

Setp4：

R2(config)#router rip

R2(config-router)#ver 2

R2(config-router)#no au

R2(config-router)#address-family ipv4 vrf ABC

R2(config-router-af)#ver 2

R2(config-router-af)#no au

R2(config-router-af)#net 12.0.0.0

R2(config-router-af)#do sh ip route vrf ABC

Routing Table: ABC

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/24 is subnetted, 1 subnets

R 1.1.1.0 [120/1] via 12.0.0.1, 00:00:17, Serial2/1

12.0.0.0/24 is subnetted, 1 subnets

C 12.0.0.0 is directly connected, Serial2/1

Setp5：

R2(config)#router bgp 234

R2(config-router)#bgp router-id 2.2.2.2

R2(config-router)#no au

R2(config-router)#no syn

R2(config-router)#nei 4.4.4.4 remote-as 234

R2(config-router)#nei 4.4.4.4 update-source lo0

R2(config-router)#no bgp default ipv4-unicast

R2(config-router)#address-family ***v4

R2(config-router-af)#nei 4.4.4.4 activate

Setp6：

R2(config)#router bgp 234

R2(config-router)#address-family ipv4 vrf ABC

R2(config-router-af)#redistribute rip

Setp7：

R2(config)#ip vrf ABC

R2(config-vrf)#route-target import 100:40

R2(config)#router rip

R2(config-router)#ver 2

R2(config-router)#address-family ipv4 vrf ABC

R2(config-router-af)#redistribute bgp 234 metric 1

PE与CE之间跑静态路由static

R2(config)#no router rip

R2(config)#ip route vrf ABC 1.1.1.0 255.255.255.0 s2/1

R2(config)#router bgp 234

R2(config-router)#address-family ipv4 vrf ABC

R2(config-router-af)#no redistribute rip

R2(config-router-af)#redistribute static

R2(config-router-af)#redistribute connected

R3(config)#int s2/1

R3(config-if)#ip add 23.0.0.3 255.255.255.0

R3(config-if)#no shu

R3(config-if)#int s2/2

R3(config-if)#ip add 34.0.0.3 255.255.255.0

R3(config-if)#no shu

R3(config-if)#int lo0

R3(config-if)#ip add 3.3.3.3 255.255.255.255

R3(config-if)#do ping 34.0.0.4

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 34.0.0.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 96/114/144 ms

R3(config)#router ospf 1

R3(config-router)#router-id 3.3.3.3

R3(config-router)#net 23.0.0.0 0.0.0.255 a 0

R3(config-router)#net 34.0.0.0 0.0.0.255 a 0

R3(config-router)#net 3.3.3.3 0.0.0.0 a 0

R3(config-router)#do sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

34.0.0.0/24 is subnetted, 1 subnets

C 34.0.0.0 is directly connected, Serial2/2

2.0.0.0/32 is subnetted, 1 subnets

O 2.2.2.2 [110/65] via 23.0.0.2, 00:00:04, Serial2/1

3.0.0.0/32 is subnetted, 1 subnets

C 3.3.3.3 is directly connected, Loopback0

4.0.0.0/32 is subnetted, 1 subnets

O 4.4.4.4 [110/65] via 34.0.0.4, 00:00:04, Serial2/2

23.0.0.0/24 is subnetted, 1 subnets

C 23.0.0.0 is directly connected, Serial2/1

R3(config)#ip cef

R3(config)#mpls label range 300 399

R3(config)#mpls label protocol ldp

R3(config)#mpls ldp router-id lo0

R3(config)#int s2/1

R3(config-if)#mpls ip

R3(config-if)#int s2/2

R3(config-if)#mpls ip

R3(config-if)#do sh mpls forwarding-table

Local Outgoing Prefix Bytes tag Outgoing Next Hop

tag tag or VC or Tunnel Id switched interface

300 Pop tag 2.2.2.2/32 0 Se2/1 point2point

301 Pop tag 4.4.4.4/32 0 Se2/2 point2point

R4(config)#int s2/1

R4(config-if)#ip add 34.0.0.4 255.255.255.0

R4(config-if)#no shu

R4(config-if)#int s2/2

R4(config-if)#ip add 45.0.0.4 255.255.255.0

R4(config-if)#no shu

R4(config-if)#int lo0

R4(config-if)#ip add 4.4.4.4 255.255.255.255

R4(config-if)#do ping 45.0.0.5

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 45.0.0.5, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 72/92/120 ms

Setp1：

R4(config)#router ospf 1

R4(config-router)#router-id 4.4.4.4

R4(config-router)#net 34.0.0.0 0.0.0.255 a 0

R4(config-router)#net 4.4.4.4 0.0.0.0

R4(config-router)#net 4.4.4.4 0.0.0.0 a 0

R4#sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

34.0.0.0/24 is subnetted, 1 subnets

C 34.0.0.0 is directly connected, Serial2/1

2.0.0.0/32 is subnetted, 1 subnets

O 2.2.2.2 [110/129] via 34.0.0.3, 00:00:14, Serial2/1

3.0.0.0/32 is subnetted, 1 subnets

O 3.3.3.3 [110/65] via 34.0.0.3, 00:00:14, Serial2/1

4.0.0.0/32 is subnetted, 1 subnets

C 4.4.4.4 is directly connected, Loopback0

23.0.0.0/24 is subnetted, 1 subnets

O 23.0.0.0 [110/128] via 34.0.0.3, 00:00:14, Serial2/1

45.0.0.0/24 is subnetted, 1 subnets

C 45.0.0.0 is directly connected, Serial2/2

Setp2：

R4(config)#ip cef

R4(config)#mpls label range 400 499

R4(config)#mpls label protocol ldp

R4(config)#mpls ldp router-id lo0

R4(config)#int s2/1

R4(config-if)#mpls ip

R4(config-if)#do sh mpls forwarding-table

Local Outgoing Prefix Bytes tag Outgoing Next Hop

tag tag or VC or Tunnel Id switched interface

400 300 2.2.2.2/32 0 Se2/1 point2point

401 Pop tag 3.3.3.3/32 0 Se2/1 point2point

402 Pop tag 23.0.0.0/24 0 Se2/1 point2point

Setp3：

R4(config)#ip vrf ABC

R4(config-vrf)#rd 100:40

R4(config-vrf)#route-target export 100:40

R4(config-vrf)#int s2/2

R4(config-if)#ip vrf forwarding ABC

% Interface Serial2/2 IP address 45.0.0.4 removed due to enabling VRF ABC

R4(config-if)#ip add 45.0.0.4 255.255.255.0

R4(config-if)#do ping vrf ABC 45.0.0.5

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 45.0.0.5, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 72/82/120 ms

R4(config-if)#exit

Setp4：

R4(config)#router rip

R4(config-router)#ver 2

R4(config-router)#no au

R4(config-router)#address-family ipv4 vrf ABC

R4(config-router-af)#ver 2

R4(config-router-af)#no au

R4(config-router-af)#net 45.0.0.0

R4(config-router-af)#do sh ip route vrf ABC

Routing Table: ABC

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

5.0.0.0/24 is subnetted, 1 subnets

R 5.5.5.0 [120/1] via 45.0.0.5, 00:00:17, Serial2/2

45.0.0.0/24 is subnetted, 1 subnets

C 45.0.0.0 is directly connected, Serial2/2

Setp5：

R4(config)#router bgp 234

R4(config-router)#bgp router-id 4.4.4.4

R4(config-router)#no au

R4(config-router)#no syn

R4(config-router)#nei 2.2.2.2 remote-as 234

R4(config-router)#nei 2.2.2.2 update-source lo0

R4(config-router)#no bgp default ipv4-unicast

R4(config-router)#address-family ***v4

R4(config-router-af)#nei 2.2.2.2 activate

Setp6：

R4(config)#router bgp 234

R4(config-router)#address-family ipv4 vrf ABC

R4(config-router-af)#redistribute rip

Setp7：

R4(config)#ip vrf ABC

R4(config-vrf)#route-target import 100:20

R4(config)#router rip

R4(config-router)#ver 2

R4(config-router)#address-family ipv4 vrf ABC

R4(config-router-af)#redistribute bgp 234 metric 1

R4(config)#router bgp 234

R4(config-router)#no bgp default route-target filter

R4#sh ip bgp *** all

BGP table version is 9, local router ID is 4.4.4.4

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

r RIB-failure, S Stale

Origin codes: i - IGP, e - EGP, ? - incomplete

Network Next Hop Metric LocPrf Weight Path

Route Distinguisher: 100:20

*>i1.1.1.0/24 2.2.2.2 1 100 0 ?

*>i12.0.0.0/24 2.2.2.2 0 100 0 ?

Route Distinguisher: 100:40 (default for vrf ABC)

*>i1.1.1.0/24 2.2.2.2 1 100 0 ?

*> 5.5.5.0/24 45.0.0.5 1 32768 ?

*>i12.0.0.0/24 2.2.2.2 0 100 0 ?

*> 45.0.0.0/24 0.0.0.0 0 32768 ?

R4#sh ip cef vrf ABC 1.1.1.1

1.1.1.0/24, version 9, epoch 0, cached adjacency to Serial2/1

0 packets, 0 bytes

tag information set

local tag: ×××-route-head

fast tag rewrite with Se2/1, point2point, tags imposed: {300 203}

via 2.2.2.2, 0 dependencies, recursive

next hop 34.0.0.3, Serial2/1 via 2.2.2.2/32

valid cached adjacency

tag rewrite with Se2/1, point2point, tags imposed: {300 203}

PE与CE之间跑静态路由static

R4(config)#no router rip

R4(config)#ip route vrf ABC 5.5.5.0 255.255.255.0 s2/2

R4(config)#router bgp 234

R4(config-router)#address-family ipv4 vrf ABC

R4(config-router-af)#no redistribute rip

R4(config-router-af)#redistribute static

R4(config-router-af)#redistribute connected

R4(config-router)#do sh ip route vrf ABC

Routing Table: ABC

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/24 is subnetted, 1 subnets

B 1.1.1.0 [200/0] via 2.2.2.2, 00:02:18

5.0.0.0/24 is subnetted, 1 subnets

S 5.5.5.0 is directly connected, Serial2/2

12.0.0.0/24 is subnetted, 1 subnets

B 12.0.0.0 [200/0] via 2.2.2.2, 00:02:18

45.0.0.0/24 is subnetted, 1 subnets

C 45.0.0.0 is directly connected, Serial2/2

R5(config)#int s2/2

R5(config-if)#ip add 45.0.0.5 255.255.255.0

R5(config-if)#no shu

R5(config-if)#int lo0

R5(config-if)#ip add 5.5.5.5 255.255.255.0

R5(config-if)#exit

R5(config)#router rip

R5(config-router)#ver 2

R5(config-router)#no au

R5(config-router)#net 45.0.0.0

R5(config-router)#net 5.0.0.0

R5(config-router)#do sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/24 is subnetted, 1 subnets

R 1.1.1.0 [120/1] via 45.0.0.4, 00:00:10, Serial2/2

5.0.0.0/24 is subnetted, 1 subnets

C 5.5.5.0 is directly connected, Loopback0

12.0.0.0/24 is subnetted, 1 subnets

R 12.0.0.0 [120/1] via 45.0.0.4, 00:00:10, Serial2/2

45.0.0.0/24 is subnetted, 1 subnets

C 45.0.0.0 is directly connected, Serial2/2

R5(config-router)#exit

R5(config)#no router rip

R5(config)#

R5(config)#ip route 0.0.0.0 0.0.0.0 s2/2

R5(config)#^Z

R5#sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

5.0.0.0/24 is subnetted, 1 subnets

C 5.5.5.0 is directly connected, Loopback0

45.0.0.0/24 is subnetted, 1 subnets

C 45.0.0.0 is directly connected, Serial2/2

S* 0.0.0.0/0 is directly connected, Serial2/2

R5#ping 1.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:

!!!!!

转载于:https://blog.51cto.com/212492/37539