Huawei equipment is configured with CE dual attribution

 

1. stay MPLS Backbone network configuration IGP agreement , Realize backbone network PE and P Interworking of

[PE1-LoopBack1]ip add 1.1.1.1 32

[PE1-GigabitEthernet0/0/0]ip add 20.1.1.1 24

[PE1]isis 1

[PE1-isis-1]network-entity 10.0000.0000.0001.00

[PE1-LoopBack1]isis enable 1

[PE1-GigabitEthernet0/0/0]isis  enable 1

[P1-LoopBack1]ip add 2.2.2.2 32

[P1-GigabitEthernet0/0/0]ip add 20.1.1.2 24

[P1-GigabitEthernet0/0/1]ip add 30.1.1.2 24

[P1]isis 1

[P1-isis-1]network-entity 10.0000.0000.0002.00

[P1-LoopBack1]isis enable 1

[P1-GigabitEthernet0/0/0]isis enable 1

[P1-GigabitEthernet0/0/1]isis enable 1

[PE3-LoopBack1]ip add 3.3.3.3 32

[PE3-GigabitEthernet0/0/0]ip add 30.1.1.3 24

[PE3]isis 1

[PE3-isis-1]network-entity 10.0000.0000.0003.00

[PE3-LoopBack1]isis enable 1

[PE3-GigabitEthernet0/0/0]isis enable 1

[PE2-LoopBack1]ip add 4.4.4.4 32

[PE2-GigabitEthernet0/0/0]ip add 40.1.1.4 24

[PE2]isis 1

[PE2-isis-1]network-entity 10.0000.0000.0004.00

[PE2-LoopBack1]isis enable 1

[PE2-GigabitEthernet0/0/0]isis enable 1

[P2-LoopBack1]ip add 5.5.5.5 32

[P2-GigabitEthernet0/0/0]ip add 40.1.1.5 24

[P2-GigabitEthernet0/0/1]ip add 50.1.1.5 24

[P2]isis 1

[P2-isis-1]network-entity 10.0000.0000.0005.00

[P2-LoopBack1]isis enable 1

[P2-GigabitEthernet0/0/0]isis enable 1  

[P2-GigabitEthernet0/0/1]isis enable 1

[PE4-LoopBack1]ip add 6.6.6.6 32

[PE4-GigabitEthernet0/0/0]ip add 50.1.1.6 24

[PE4]isis 1

[PE4-isis-1]network-entity 10.0000.0000.0006.00

[PE4-LoopBack1]isis enable 1

[PE4-GigabitEthernet0/0/0]isis enable 1

2. stay MPLS Backbone network configuration MPLS Basic abilities and MPLS LDP, establish LDP LSP

[PE1]mpls lsr-id 1.1.1.1

[PE1]mpls

[PE1]mpls ldp  

[PE1-GigabitEthernet0/0/0]mpls      

[PE1-GigabitEthernet0/0/0]mpls ldp

[P1]mpls lsr-id 2.2.2.2

[P1]mpls

[P1]mpls ldp  

[P1-GigabitEthernet0/0/0]mpls      

[P1-GigabitEthernet0/0/0]mpls ldp  

[P1-GigabitEthernet0/0/1]mpls      

[P1-GigabitEthernet0/0/1]mpls ldp

[PE3]mpls lsr-id 3.3.3.3

[PE3]mpls

[PE3]mpls ldp  

[PE3-GigabitEthernet0/0/0]mpls      

[PE3-GigabitEthernet0/0/0]mpls ldp

[PE2]mpls lsr-id 4.4.4.4

[PE2]mpls

[PE2]mpls ldp  

[PE2-GigabitEthernet0/0/0]mpls      

[PE2-GigabitEthernet0/0/0]mpls ldp

[P2]mpls lsr-id 5.5.5.5  

[P2]mpls

[P2]mpls ldp  

[P2-GigabitEthernet0/0/0]mpls      

[P2-GigabitEthernet0/0/0]mpls ldp  

[P2-GigabitEthernet0/0/1]mpls      

[P2-GigabitEthernet0/0/1]mpls ldp

[PE4]mpls lsr-id 6.6.6.6

[PE4]mpls

[PE4]mpls ldp  

[PE4-GigabitEthernet0/0/0]mpls      

[PE4-GigabitEthernet0/0/0]mpls ldp

 

 

3. stay PE The device is configured with VPN example , take CE Access PE

[PE1]ip vpn-instance vpn1  

[PE1-vpn-instance-vpn1]ipv4-family

[PE1-vpn-instance-vpn1-af-ipv4]route-distinguisher 100:1

[PE1-vpn-instance-vpn1-af-ipv4]vpn-target 1:1

[PE1-GigabitEthernet0/0/1]ip binding vpn-instance vpn1

[PE1-GigabitEthernet0/0/1]ip add 10.1.1.1 24

[PE3]ip vpn-instance vpn1

[PE3-vpn-instance-vpn1]ipv4-family

[PE3-vpn-instance-vpn1-af-ipv4]route-distinguisher 100:3

[PE3-vpn-instance-vpn1-af-ipv4]vpn-target 1:1

[PE3-GigabitEthernet0/0/1]ip binding vpn-instance vpn1

[PE3-GigabitEthernet0/0/1]ip add 10.3.1.3 24

[PE2]ip vpn-instance vpn1

[PE2-vpn-instance-vpn1]ipv4-family

[PE2-vpn-instance-vpn1-af-ipv4]route-distinguisher 100:2

[PE2-vpn-instance-vpn1-af-ipv4]vpn-target 1:1

[PE2-GigabitEthernet0/0/1]ip binding vpn-instance vpn1

[PE2-GigabitEthernet0/0/1]ip add 10.2.1.4 24

[PE4]ip vpn-instance vpn1

[PE4-vpn-instance-vpn1]ipv4-family

[PE4-vpn-instance-vpn1-af-ipv4]route-distinguisher 100:4

[PE4-vpn-instance-vpn1-af-ipv4]vpn-target 1:1

[PE4-GigabitEthernet0/0/1]ip binding vpn-instance vpn1

[PE4-GigabitEthernet0/0/1]ip add 10.4.1.6 24

4. stay PE Establish between MP-IBGP Peer relationship

[PE1]bgp 100

[PE1-bgp]peer 3.3.3.3 as-number 100

[PE1-bgp]peer 3.3.3.3 connect-interface LoopBack 1

[PE1-bgp]ipv4-family vpnv4

[PE1-bgp-af-vpnv4]peer 3.3.3.3 enable

[PE3]bgp 100

[PE3-bgp]peer 1.1.1.1 as-number 100

[PE3-bgp]peer 1.1.1.1 connect-interface LoopBack 1

[PE3-bgp]ipv4-family vpnv4

[PE3-bgp-af-vpnv4]peer 1.1.1.1 enable

[PE2]bgp 100

[PE2-bgp]peer 6.6.6.6 as-number 100

[PE2-bgp]peer 6.6.6.6 connect-interface LoopBack 1

[PE2-bgp]ipv4-family vpnv4

[PE2-bgp-af-vpnv4]peer 6.6.6.6 enable

[PE4]bgp 100

[PE4-bgp]peer 4.4.4.4 as-number 100

[PE4-bgp]peer 4.4.4.4 connect-interface LoopBack 1

[PE4-bgp]ipv4-family vpnv4

[PE4-bgp-af-vpnv4]peer 4.4.4.4 enable

 

 

5. stay PE And CE Configuration between EBGP Routing protocol , introduce VPN route

[CE1-GigabitEthernet0/0/0]ip add 10.1.1.7 24

[CE1-GigabitEthernet0/0/1]ip add 10.2.1.7 24

[CE1-GigabitEthernet0/0/2]ip ad 1.5.1.7 24

[CE1]bgp 65410

[CE1-bgp]peer 10.1.1.1 as-number 100

[CE1-bgp]peer 10.2.1.4 as-number 100

[CE1-bgp]import-route direct

[CE2-GigabitEthernet0/0/0]ip add 10.3.1.8 24

[CE2-GigabitEthernet0/0/1]ip add 10.4.1.8 24

[CE2-GigabitEthernet0/0/2]ip add 1.6.1.8 24

[CE2]bgp 65420

[CE2-bgp]peer 10.3.1.3 as-number 100

[CE2-bgp]peer 10.4.1.6 as-number 100

[CE2-bgp]import-route direct

[PE1]bgp 100

[PE1-bgp]ipv4-family vpn-instance vpn1

[PE1-bgp-vpn1]peer 10.1.1.7 as-number 65410

[PE1-bgp-vpn1]import-route direct

[PE2]bgp 100

[PE2-bgp]ipv4-family vpn-instance vpn1

[PE2-bgp-vpn1]peer 10.2.1.7 as-number 65410

[PE2-bgp-vpn1]import-route direct

PE3]bgp 100

[PE3-bgp]ipv4-family vpn-instance vpn1

[PE3-bgp-vpn1]peer 10.3.1.8 as-number 65420

[PE3-bgp-vpn1]import-route direct

[PE4]bgp 100

[PE4-bgp]ipv4-family vpn-instance vpn1

[PE4-bgp-vpn1]peer 10.4.1.8 as-number 65420

[PE4-bgp-vpn1]import-route direct

 

6. stay CE1 Configuration on allows CE1 To CE2 The traffic allows load sharing

[CE1]bgp 65410

[CE1-bgp]ipv4-family unicast  

[CE1-bgp-af-ipv4]maximum load-balancing 2

7. Configure routing policies , increase PE3 Publish to CE2 Of BGP The routing MED value , send CE2 To CE1 Of flow through PE4,PE3 As backup

[PE3]route-policy p1 permit node 10

[PE3-route-policy]apply cost 120

[PE3]bgp 100

[PE3-bgp]ipv4-family vpn-instance vpn1

[PE3-bgp-vpn1]peer 10.3.1.8 route-policy p1 export

 

Find that for 1.5.1.0/30 The routing ,PE3 released MED The value is 120, Than PE4 released MED Large value （ By default MED The value of is 0）, So choose PE4 released

8. Check the configuration

 

See go to the opposite end CE2 The route of the connected user , And load sharing

 

Go to the opposite end CE1 The route of the connected user , And the next jump is 10.4.1.6（PE4 Access on CE2 The interface of IP Address ）