MPLS实验

 

1.IP地址

[r1-LoopBack0]ip add 192.168.1.1 24

[r1-LoopBack0]int g0/0/0

[r1-GigabitEthernet0/0/0]ip add 192.168.2.1 24

[r2]int lo0

[r2-LoopBack0]ip add 2.2.2.2 24

[r2-LoopBack0]int g0/0/1

[r2-GigabitEthernet0/0/1]ip add 23.1.1.1 24

[r3-LoopBack0]ip add 3.3.3.3 24

[r3-LoopBack0]int g0/0/0

[r3-GigabitEthernet0/0/0]ip add 23.1.1.2 24

[r3-GigabitEthernet0/0/0]int g0/0/1

[r3-GigabitEthernet0/0/1]ip add 34.1.1.1 24

[r4]int lo0

[r4-LoopBack0]ip add 4.4.4.4 24

[r4-LoopBack0]int g0/0/0

[r4-GigabitEthernet0/0/0]ip add 34.1.1.2 24

[r4-GigabitEthernet0/0/2]ip add 47.1.1.2 24

[r5]int lo0

[r5-LoopBack0]ip add 192.168.4.1 24

[r5-LoopBack0]int g0/0/0

[r5-GigabitEthernet0/0/0]ip add 192.168.3.1 24

[r6]int lo0

[r6-LoopBack0]ip add 192.168.1.1 24

[r6-LoopBack0]int g0/0/0

[r6-GigabitEthernet0/0/0]ip add 192.168.2.1 24

[r7]int lo0

[r7-LoopBack0]ip add 192.168.4.2 24

[r7-LoopBack0]int g0/0/1

[r7-GigabitEthernet0/0/1]ip add 192.168.3.1 24

[r7-GigabitEthernet0/0/1]int g0/0/0

[r7-GigabitEthernet0/0/0]ip add 47.1.1.1 24

将公网跑通 ，ospf

[r2]ospf 1 router-id 2.2.2.2

[r2-ospf-1]are

[r2-ospf-1]area 0

[r2-ospf-1-area-0.0.0.0]net

[r2-ospf-1-area-0.0.0.0]network 23.1.1.1 0.0.0.0

[r2-ospf-1-area-0.0.0.0]net

[r2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0

[r3]ospf 1 router-id 3.3.3.3

[r3-ospf-1]area 0

[r3-ospf-1-area-0.0.0.0]network 0.0.0.0 255.255.255.255

[r4]ospf 1 router-id 4.4.4.4

[r4-ospf-1]area 0

[r4-ospf-1-area-0.0.0.0]network 34.1.1.2 0.0.0.0

[r4-ospf-1-area-0.0.0.0]network 47.1.1.1 0.0.0.0

[r4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0

公网做MPLS

[r2]mpls lsr-id 2.2.2.2

[r2]mpls

Info: Mpls starting, please wait... OK!

[r2-mpls]mpls ldp

[r2-mpls-ldp]q

[r2]interface g0/0/1

[r2-GigabitEthernet0/0/1]mpls

[r2-GigabitEthernet0/0/1]mpls ldp

[r3]mpls lsr-id 3.3.3.3

[r3]mpls

Info: Mpls starting, please wait... OK!

[r3-mpls]mpls ldp

[r3-mpls-ldp]q

[r3]int g0/0/0

[r3-GigabitEthernet0/0/0]mpls

[r3-GigabitEthernet0/0/0]mpls ldp

[r3-GigabitEthernet0/0/1] mpls

[r3-GigabitEthernet0/0/1]

[r3-GigabitEthernet0/0/1] mpls ldp

[r4]mpls lsr-id 4.4.4.4

[r4]mpls

Info: Mpls starting, please wait... OK!

[r4-mpls]mpls ldp

[r4-mpls-ldp]q

[r4]int g0/0/0

[r4-GigabitEthernet0/0/0]mpls

[r4-GigabitEthernet0/0/0]mpls ldp

VRF空间 R2 配置RT RD值

[r2]ip vpn-instance a1 ---创建名为a1的vrf空间

[r2-vpn-instance-a1]ipv4-family ----进入IPV4的配置模式下

[r2-vpn-instance-a1-af-ipv4]route-distinguisher 1:1 --RD值

[r2-vpn-instance-a1-af-ipv4]vpn-target 1:1 RT值 必须对端的PE端一致

IVT Assignment result:

Info: VPN-Target assignment is successful.

EVT Assignment result:

Info: VPN-Target assignment is successful.

R4的VRF 配置RT RD值

[r4]ip vpn-instance a1 ---因为 R1与R5 属于同一公司

[r4-vpn-instance-a1]ipv4-family

[r4-vpn-instance-a1-af-ipv4]route-distinguisher 1:1

[r4-vpn-instance-a1-af-ipv4]vpn-target 1:1

IVT Assignment result:

Info: VPN-Target assignment is successful.

EVT Assignment result:

Info: VPN-Target assignment is successful.

将R2 R4接口的私有IP划分到VPN空间去

[r2-vpn-instance-a1-af-ipv4]int g0/0/0 ---进入链接CE端的接口

[r2-GigabitEthernet0/0/0]ip binding vpn-instance a1 ---关联到vrf空间

Info: All IPv4 related configurations on this interface are removed!

Info: All IPv6 related configurations on this interface are removed!

[r2-GigabitEthernet0/0/0]ip address 192.168.2.2 24 --- 配置私有ip地址

[r4-vpn-instance-a1-af-ipv4]int g0/0/1

[r4-GigabitEthernet0/0/1]ip binding vpn-instance a1 ---关联到vrf空间

Info: All IPv4 related configurations on this interface are removed!

Info: All IPv6 related configurations on this interface are removed!

[r4-GigabitEthernet0/0/1]ip address 192.168.3.2 24 配置私有ip地址

R2 R4 起BGP 建立VPNV4专用邻居

[r2]bgp 1

[r2-bgp]router-id 2.2.2.2

[r2-bgp]peer 4.4.4.4 as-number 1

[r2-bgp]peer 4.4.4.4 connect-interface LoopBack 0

[r2-bgp]ipv4-family vpnv4 ----进入vpnIPv4版本

[r2-bgp-af-vpnv4]peer 4.4.4.4 enable ----建立VPNV4邻居关系

[r4]bgp 1

[r4-bgp]router-id 4.4.4.4

[r4-bgp]peer 2.2.2.2 as-number 1

[r4-bgp]peer 2.2.2.2 connect-interface LoopBack 0

[r4-bgp]ipv4-family vpnv4

[r4-bgp-af-vpnv4]peer 2.2.2.2 enable

将R1的路由导到r2，R5导到R3

1)用静态方式

[r1]ip route-static 192.168.3.0 24 192.168.2.2

[r1]ip route-static 192.168.4.0 24 192.168.2.2

[r2]ip route-static vpn-instance a1 192.168.1.0 24 192.168.2.1

[r5]ip route-static 192.168.1.0 24 192.168.3.2

[r5]ip route-static 192.168.2.0 24 192.168.3.2

[r4]ip route-static vpn-instance a1 192.168.4.0 24 192.168.3.1

2)然后双向重发布

[r2]bgp 1

[r2-bgp]ipv4-family vpn-instance a1

[r2-bgp-a1]import-route direct

[r2-bgp-a1]import-route static

R4

[r4]bgp 1

[r4-bgp]ipv4-family vpn-instance a1

[r4-bgp-a1]import-route direct

[r4-bgp-a1]import-route static

测试

将R6 R7配置RT RD值 划分私有接口

[r2]ip vpn-instance a2

[r2-vpn-instance-a2]ipv4

[r2-vpn-instance-a2]ipv4-family

[r2-vpn-instance-a2-af-ipv4]rou

[r2-vpn-instance-a2-af-ipv4]route-distinguisher 2:2

[r2-vpn-instance-a2-af-ipv4]vp

[r2-vpn-instance-a2-af-ipv4]vpn-target 2:2

IVT Assignment result:

Info: VPN-Target assignment is successful.

EVT Assignment result:

Info: VPN-Target assignment is successful.

[r2-vpn-instance-a2-af-ipv4]int g0/0/2

[r2-GigabitEthernet0/0/2]ip bin

[r2-GigabitEthernet0/0/2]ip binding vp

[r2-GigabitEthernet0/0/2]ip binding vpn-instance a2

Aug 14 2023 18:15:13-08:00 r2 %%01IFNET/4/LINK_STATE(l)[0]:The line protocol IP

on the interface GigabitEthernet0/0/0 has entered the DOWN state.

Info: All IPv4 related configurations on this interface are removed!

Info: All IPv6 related configurations on this interface are removed!

[r2-GigabitEthernet0/0/0]

[r2-GigabitEthernet0/0/0]ip add 192.168.2.2 24

[r4]ip vpn-instance a2

[r4-vpn-instance-a2]ipv4-family

[r4-vpn-instance-a2-af-ipv4]route-distinguisher 2:2

[r4-vpn-instance-a2-af-ipv4]vpn-target 2:2

[r4-vpn-instance-a2-af-ipv4]int g4/0/0

[r4-GigabitEthernet4/0/0]ip binding vpn-instance a2

[r4-GigabitEthernet4/0/0]ip add 192.168.3.2 24

R6 R7通过动态完成

1）R6 R2上跑rip

[r6]rip 1

[r6-rip-1]vers

[r6-rip-1]version 2

[r6-rip-1]net

[r6-rip-1]network 192.168.1.0

[r6-rip-1]net

[r6-rip-1]network 192.168.2.0

[r2]rip 1 vp

[r2]rip 1 vpn-instance a2

[r2-rip-1]vers

[r2-rip-1]version 2

[r2-rip-1]net

[r2-rip-1]network 192.168.2.0

2)R4 ,R7上跑ospf

[r7]ospf 1 router-id 7.7.7.7

[r7-ospf-1]area 0

[r7-ospf-1-area-0.0.0.0]network 192.168.4.2 0.0.0.0

[r7-ospf-1-area-0.0.0.0]network 192.168.3.1 0.0.0.0

[r4]ospf 2 vpn-instance a2

[r4-ospf-2]area 0

[r4-ospf-2-area-0.0.0.0]network 192.168.3.2 0.0.0.0

3）双向重发布

[r2]rip 1 vpn-instance a2

[r2-rip-1]version 2

[r2-rip-1]import-route bgp

[r2-rip-1]q

[r2]bgp 1

[r2-bgp]ipv4-family vpn-instance a2

[r2-bgp-a2]import-route rip 1

R4

[r4]ospf 2 vpn-instance a2

[r4-ospf-2]import-route bgp

[r4-ospf-2]q

[r4]bgp 1

[r4-bgp]ipv4-family vpn-instance a2

[r4-bgp-a2]import-route ospf 2

测试

nat转换

[r7]ip route-static 0.0.0.0 0 47.1.1.2 ----写一个缺省

[r4]acl 2000

[r4-acl-basic-2000]rule permit source 192.168.0.0 0.0.255.255

[r4-acl-basic-2000]int g0/0/0

[r4-GigabitEthernet0/0/0]nat outbound 2000