
[R2]display ip interface brief 
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 4
The number of interface that is DOWN in Physical is 1
The number of interface that is UP in Protocol is 3
The number of interface that is DOWN in Protocol is 2
 
Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              unassigned           up         down      
GigabitEthernet0/0/1              23.0.0.1/24          up         up        
GigabitEthernet0/0/2              unassigned           down       down      
LoopBack0                         2.2.2.2/24           up         up(s)     
NULL0                             unassigned           up         up(s)     
[R2]

R3


[R3]display ip interface brief 
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 4
The number of interface that is DOWN in Physical is 1
The number of interface that is UP in Protocol is 4
The number of interface that is DOWN in Protocol is 1
 
Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              23.0.0.2/24          up         up        
GigabitEthernet0/0/1              24.0.0.1/24          up         up        
GigabitEthernet0/0/2              unassigned           down       down      
LoopBack0                         3.3.3.3/24           up         up(s)     
NULL0                             unassigned           up         up(s)     
[R3]

R4


[R4]display ip interface brief 
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 4
The number of interface that is DOWN in Physical is 1
The number of interface that is UP in Protocol is 3
The number of interface that is DOWN in Protocol is 2
 
Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              34.0.0.2/24          up         up        
GigabitEthernet0/0/1              unassigned           up         down      
GigabitEthernet0/0/2              unassigned           down       down      
LoopBack0                         4.4.4.4/24           up         up(s)     
NULL0                             unassigned           up         up(s)     
[R4]

公网部分配置IGP（ospf）

R2


[R2]ospf router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 23.0.0.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0

R3


[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 23.0.0.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 34.0.0.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

R4


[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 34.0.0.0 0.0.0.0
[R4-ospf-1-area-0.0.0.0]network 4.4.4.4 0.0.0.0

激活MPLS

R2


[R2]mpls lsr-id 2.2.2.2
[R2]mpls 
Info: Mpls starting, please wait... OK!
[R2-mpls]mpls ld
[R2-mpls-ldp]  int g 0/0/01
[R2-GigabitEthernet0/0/1]mpls 
[R2-GigabitEthernet0/0/1]mpls ld

R3


[R3]mpls lsr-id 3.3.3.3
[R3]mpls 
Info: Mpls starting, please wait... OK!
[R3-mpls]mpls ldp
[R3-mpls-ldp]int g 0/0/0
[R3-GigabitEthernet0/0/0]mpls 
[R3-GigabitEthernet0/0/0]mpls ldp
[R3-GigabitEthernet0/0/0]int g 0/0/1	
[R3-GigabitEthernet0/0/1]mpls 
[R3-GigabitEthernet0/0/1]mpls ldp 
[R3-GigabitEthernet0/0/1]

R4


[R4]mpls lsr-id 4.4.4.4
[R4]mpls 
Info: Mpls starting, please wait... OK!
[R4-mpls]mpls ldp
[R4-mpls-ldp]int g 0/0/0	
[R4-GigabitEthernet0/0/0]mpls 	
[R4-GigabitEthernet0/0/0]mpls ldp 
[R4-GigabitEthernet0/0/0]

VRF创建

R2


[R2]ip vpn-instance a --- VRF空间命名时大小写敏感
[R2-vpn-instance-a]
[R2-vpn-instance-a]route-distinguisher 100:1 --- 配置RD值
[R2-vpn-instance-a-af-ipv4]
[R2-vpn-instance-a-af-ipv4]vpn-target 100:1 export-extcommunity --- 配置出站RT
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[R2-vpn-instance-a-af-ipv4]vpn-target 100:2 import-extcommunity --- 配置入站RT
 IVT Assignment result: 
Info: VPN-Target assignment is successful.

R4


[R4]ip vpn-instance b
[R4-vpn-instance-b]
Apr 19 2023 11:44:15-08:00 R4 %%01LDP/4/SSNHOLDTMREXP(l)[1]:Sessions were delete
d because the session hold timer expired and the notification of the expiry was 
sent to the peer 3.3.3.3. 
[R4-vpn-instance-b]route-distinguisher 200:1	
[R4-vpn-instance-b-af-ipv4]vpn-target 100:2 export-extcommunity 
 EVT Assignment result: 
Info: VPN-Target assignment is successful.
[R4-vpn-instance-b-af-ipv4]vpn-target 100:1 import-extcommunity 
 IVT Assignment result: 
Info: VPN-Target assignment is successful.
[R4-vpn-instance-b-af-ipv4]

将接口画入VRF空间

R2


[R2-GigabitEthernet0/0/0]ip binding vpn-instance a
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!
[R2-GigabitEthernet0/0/0]

R4


[R4-GigabitEthernet0/0/1]ip binding vpn-instance b
Apr 19 2023 11:46:19-08:00 R4 %%01IFNET/4/LINK_STATE(l)[5]:The line protocol IP 
on the interface GigabitEthernet0/0/1 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!
[R4-GigabitEthernet0/0/1]

注意：

画入后会清除之前配置的所有IPV4、IPV6

配置接口IP地址

R2

[R2-GigabitEthernet0/0/0]ip address 192.168.2.2 24

R4


[R4]int g 0/0/1
[R4-GigabitEthernet0/0/1]ip address 192.168.3.1 24

站点1基本配置


[R1]int g 0/0/0
[R1-GigabitEthernet0/0/0]ip ad	
[R1-GigabitEthernet0/0/0]ip address 192.168.2.1 24
[R1]int l 0
[R1-LoopBack0]ip address 192.168.1.1 24

站点2基本配置


[R5]int g 0/0/0
[R5-GigabitEthernet0/0/0]ip address 192.168.3.2 24
[R5-LoopBack0]ip address 192.168.4.1 24

通过静态路由在CE和PE上配置


[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 a 192.168.1.0 24 192.168.2.1
 
[R5]ip route-static 192.168.2.0 24 192.168.3.1
[R5]ip route-static 192.168.1.0 24 192.168.3.1
 
[R4]ip route-static vpn-instance b 192.168.4.0 24 192.168.3.2

启动BGP

使用IBGP即可


[R2]bgp 1
[R2-bgp]router-id 2.2.2.2
[R2-bgp]peer 4.4.4.4 as 1
[R2-bgp]peer 4.4.4.4 connect-interface LoopBack 0
 
[R4]bgp 1
[R4-bgp]router-id 4.4.4.4
[R4-bgp]peer 2.2.2.2 as 1
[R4-bgp]peer 2.2.2.2 connect-interface LoopBack 0

建立MP-BGP邻居

在BGPV4邻居关系建立好之后进入到VPNV4


[R2-bgp]ipv4-family vpnv4
[R2-bgp-af-vpnv4]
[R2-bgp-af-vpnv4]peer 4.4.4.4 enable --- 因为PE设备之间需要传递VPNV4路由 ，所以，在普通的BGPV4邻居关系建立的基础上，需要在VPNV4地址族中激活邻居关系
 
[R4-bgp]ipv4-family vpnv4
[R4-bgp-af-vpnv4]peer 2.2.2.2 enable

发布站点1信息

[R2-bgp]ipv4-family vpn-instance a --- 在VRF空间中发布路由信息

发布直连路由以及静态路由


[R2-bgp-a]import-route direct 
[R2-bgp-a]import-route static

测试

发布站点2的路由信息

[R4-bgp]ipv4-family vpn-instance b

发布路由（neetwork发布）


[R4-bgp-b]network 192.168.3.0 24
[R4-bgp-b]network 192.168.4.0 24

测试

连通性测试

声明：本文内容由网友自发贡献，不代表【wpsshop博客】立场，版权归原作者所有，本站不承担相应法律责任。如您发现有侵权的内容，请联系我们。转载请注明出处：https://www.wpsshop.cn/w/羊村懒王/article/detail/567705