Network requirements – H3C Technologies H3C S7500E Series Switches User Manual

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[PE2-Vlan-interface12] ip address 9.1.1.2 255.0.0.0

[PE2-Vlan-interface12] isis enable 1

[PE2-Vlan-interface12] mpls

[PE2-Vlan-interface12] mpls ldp

[PE2-Vlan-interface12] quit

# Configure interface Loopback 0 and start IS-IS on it.

[PE2] interface loopback 0

[PE2-LoopBack0] ip address 5.5.5.9 32

[PE2-LoopBack0] isis enable 1

[PE2-LoopBack0] quit

# Create VPN instance vpn1 and configure the RD and VPN target attributes.

[PE2] ip vpn-instance vpn1

[PE2-vpn-instance-vpn1] route-distinguisher 12:12

[PE2-vpn-instance-vpn1] vpn-target 1:1 2:2 3:3 import-extcommunity

[PE2-vpn-instance-vpn1] vpn-target 3:3 export-extcommunity

[PE2-vpn-instance-vpn1] quit

# Bind the interface connected with CE 2 to the created VPN instance.

[PE2] interface vlan-interface 1

[PE2-Vlan-interface1] ip binding vpn-instance vpn1

[PE2-Vlan-interface1] ip address 20.0.0.1 8

[PE2-Vlan-interface1] quit

# Start BGP on PE 2.

[PE2] bgp 600

# Configure IBGP peer 4.4.4.9 as a VPNv4 peer.

[PE2-bgp] peer 4.4.4.9 as-number 600

[PE2-bgp] peer 4.4.4.9 connect-interface loopback 0

[PE2-bgp] ipv4-family vpnv4

[PE2-bgp-af-vpnv4] peer 4.4.4.9 enable

[PE2-bgp-af-vpnv4] quit

# Specify to inject direct routes to the VPN routing table of vpn1.

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

[PE2-bgp-vpn1] import-route direct

[PE2-bgp-vpn1] quit

[PE2-bgp] quit

5) Verify your configurations

After you complete the above configurations, PE 1 and PE 2 should be able to ping each other.

Example for Configuring Inter-Provider VPN Option C

Network requirements

Site 1 and Site 2 belong to the same VPN. Site 1 accesses the network through PE 1 in AS 100
and Site 2 accesses the network through PE 2 in AS 600.

PEs in the same AS runs IS-IS between them.

PE 1 and ASBR-PE 1 exchange labeled IPv4 routes by MP-IBGP.

PE 2 and ASBR-PE 2 exchange labeled IPv4 routes by MP-IBGP.

PE 1 and PE 2 are MP-EBGP peers.