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Execute the display isis peer command to verify that the IS-IS neighbor relationship has
been established between PE 1 and PE 2. (Details not shown.)
2. Configure the customer VPN. Enable IS-IS, and enable LDP between PE 3 and CE 1, and
between PE 4 and CE 2:
# Configure PE 3.
<PE3> system-view
[PE3] interface loopback 0
[PE3-LoopBack0] ip address 1.1.1.9 32
[PE3-LoopBack0] quit
[PE3] mpls lsr-id 1.1.1.9
[PE3] mpls ldp
[PE3-ldp] quit
[PE3] isis 2
[PE3-isis-2] network-entity 10.0000.0000.0000.0001.00
[PE3-isis-2] quit
[PE3] interface loopback 0
[PE3-LoopBack0] isis enable 2
[PE3-LoopBack0] quit
[PE3] interface vlan-interface 2
[PE3-Vlan-interface2] ip address 10.1.1.1 24
[PE3-Vlan-interface2] isis enable 2
[PE3-Vlan-interface2] mpls enable
[PE3-Vlan-interface2] mpls ldp enable
[PE3-Vlan-interface2] quit
# Configure CE 1.
<CE1> system-view
[CE1] interface loopback 0
[CE1-LoopBack0] ip address 2.2.2.9 32
[CE1-LoopBack0] quit
[CE1] mpls lsr-id 2.2.2.9
[CE1] mpls ldp
[CE1-ldp] quit
[CE1] isis 2
[CE1-isis-2] network-entity 10.0000.0000.0000.0002.00
[CE1-isis-2] quit
[CE1] interface loopback 0
[CE1-LoopBack0] isis enable 2
[CE1-LoopBack0] quit
[CE1] interface vlan-interface 2
[CE1-Vlan-interface2] ip address 10.1.1.2 24
[CE1-Vlan-interface2] isis enable 2
[CE1-Vlan-interface2] mpls enable
[CE1-Vlan-interface2] mpls ldp enable
[CE1-Vlan-interface2] quit
An LDP session and an IS-IS neighbor relationship can be established between PE 3 and CE 1.
# Configure PE 4 and CE 2 in the same way that PE 3 and CE 1 are configured. (Details not
shown.)
3. Connect CE 1 and CE 2 to service provider PEs:
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