Table of contents
Configure IGP (ospf) on the public network
Draw the interface into the VRF space
Configure the interface IP address
Configure static routes on CE and PE
Publish direct routes and static routes
Publish the routing information of Site 2
Publishing routes (neetwork publishing)
MPLS VPN experiment
Topology
Purpose
Site 1 and Site 2 need to be built together through MPLS VPN
R2、R4--- PE
R3 --- P
R1、R5---CE
basic configuration
R2
[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]Configure IGP (ospf) on the public network
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 0.0.0.0R3
[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 0.0.0.0R4
[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 0.0.0.0Activate 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 ldR3
[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 creation
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]Draw the interface into the VRF space
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]Notice:
After drawing, all the previously configured IPV4 and IPV6 will be cleared
Configure the interface IP address
R2
[R2-GigabitEthernet0/0/0]ip address 192.168.2.2 24R4
[R4]int g 0/0/1
[R4-GigabitEthernet0/0/1]ip address 192.168.3.1 24Basic configuration of site 1
[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
Basic configuration of site 2
[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 24Configure static routes on CE and PE
[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 24 192.168.3.2start BGP
Just use IBGP
[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 0Establish MP-BGP Neighborhood
Enter VPNV4 after the BGPV4 neighbor relationship is established
[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 enablePublish site 1 information
[R2-bgp]ipv4-family vpn-instance a --- 在VRF空间中发布路由信息Publish direct routes and static routes
[R2-bgp-a]import-route direct
[R2-bgp-a]import-route statictest
Publish the routing information of Site 2
[R4-bgp]ipv4-family vpn-instance bPublishing routes (neetwork publishing)
[R4-bgp-b]network 192.168.3.0 24
[R4-bgp-b]network 192.168.4.0 24test
Connectivity test
