BGP auto-discovery LDP PW configuration example
Network requirements
CEs are connected to the PEs through Layer 3 Ethernet interfaces (GigabitEthernet 2/1/1).
Configure a VSI on each PE. Use BGP to discover remote PEs and use LDP to create PWs among PEs so CEs in different sites of VPN 1 can communicate with each other.
Figure 126: Network diagram
Configuration procedure
Configure an IGP and public tunnels on each PE. (Details not shown.)
Configure PE 1:
# Configure basic MPLS.
<PE1> system-view [PE1] interface loopback 0 [PE1-LoopBack0] ip address 1.1.1.9 32 [PE1-LoopBack0] quit [PE1] mpls lsr-id 1.1.1.9 [PE1] mpls ldp [PE1-ldp] quit
# Establish IBGP connections to PE 1 and PE 2, and use BGP to advertise VPLS PE information.
[PE1] bgp 100 [PE1-bgp-default] peer 2.2.2.9 as-number 100 [PE1-bgp-default] peer 2.2.2.9 connect-interface loopback 0 [PE1-bgp-default] peer 3.3.3.9 as-number 100 [PE1-bgp-default] peer 3.3.3.9 connect-interface loopback 0 [PE1-bgp-default] address-family l2vpn [PE1-bgp-default-l2vpn] peer 2.2.2.9 enable [PE1-bgp-default-l2vpn] peer 3.3.3.9 enable [PE1-bgp-default-l2vpn] quit [PE1-bgp-default] quit
# Enable L2VPN.
[PE1] l2vpn enable
# Configure VSI aaa to use BGP to discover remote PEs and use LDP to establish LDP PWs to PE 2 and PE 3.
[PE1] vsi aaa [PE1-vsi-aaa] auto-discovery bgp [PE1-vsi-aaa-auto] route-distinguisher 1:1 [PE1-vsi-aaa-auto] vpn-target 1:1 [PE1-vsi-aaa-auto] signaling-protocol ldp [PE1-vsi-aaa-auto-ldp] vpls-id 100:100 [PE1-vsi-aaa-auto-ldp] quit [PE1-vsi-aaa-auto] quit [PE1-vsi-aaa] quit
# Bind Layer 3 Ethernet interface GigabitEthernet 2/1/1 to VSI aaa.
[PE1] interface gigabitethernet 2/1/1 [PE1-GigabitEthernet2/1/1] xconnect vsi aaa [PE1-GigabitEthernet2/1/1] quit
Configure PE 2:
# Configure basic MPLS.
<PE2> system-view [PE2] interface loopback 0 [PE2-LoopBack0] ip address 2.2.2.9 32 [PE2-LoopBack0] quit [PE2] mpls lsr-id 2.2.2.9 [PE2] mpls ldp [PE2-ldp] quit
# Establish IBGP connections to PE 1 and PE 3, and use BGP to advertise VPLS PE information.
[PE2] bgp 100 [PE2-bgp-default] peer 1.1.1.9 as-number 100 [PE2-bgp-default] peer 1.1.1.9 connect-interface loopback 0 [PE2-bgp-default] peer 3.3.3.9 as-number 100 [PE2-bgp-default] peer 3.3.3.9 connect-interface loopback 0 [PE2-bgp-default] address-family l2vpn [PE2-bgp-default-l2vpn] peer 1.1.1.9 enable [PE2-bgp-default-l2vpn] peer 3.3.3.9 enable [PE2-bgp-default-l2vpn] quit [PE2-bgp-default] quit
# Enable L2VPN.
[PE2] l2vpn enable
# Configure VSI aaa to use BGP to discover remote PEs and use LDP to establish LDP PWs to PE 1 and PE 3.
[PE2] vsi aaa [PE2-vsi-aaa] auto-discovery bgp [PE2-vsi-aaa-auto] route-distinguisher 1:1 [PE2-vsi-aaa-auto] vpn-target 1:1 [PE2-vsi-aaa-auto] signaling-protocol ldp [PE2-vsi-aaa-auto-ldp] vpls-id 100:100 [PE2-vsi-aaa-auto-ldp] quit [PE2-vsi-aaa-auto] quit [PE2-vsi-aaa] quit
# Bind Layer 3 Ethernet interface GigabitEthernet 2/1/1 to VSI aaa.
[PE2] interface gigabitethernet 2/1/1 [PE2-GigabitEthernet2/1/1] xconnect vsi aaa [PE2-GigabitEthernet2/1/1] quit
Configure PE 3:
# Configure basic MPLS.
<PE3> system-view [PE3] interface loopback 0 [PE3-LoopBack0] ip address 3.3.3.9 32 [PE3-LoopBack0] quit [PE3] mpls lsr-id 3.3.3.9 [PE3] mpls ldp [PE3-ldp] quit
# Establish IBGP connections to PE 1 and PE 2, and use BGP to advertise VPLS PE information.
[PE3] bgp 100 [PE3-bgp-default] peer 1.1.1.9 as-number 100 [PE3-bgp-default] peer 1.1.1.9 connect-interface loopback 0 [PE3-bgp-default] peer 2.2.2.9 as-number 100 [PE3-bgp-default] peer 2.2.2.9 connect-interface loopback 0 [PE3-bgp-default] address-family l2vpn [PE3-bgp-default-l2vpn] peer 1.1.1.9 enable [PE3-bgp-default-l2vpn] peer 2.2.2.9 enable [PE3-bgp-default-l2vpn] quit [PE3-bgp-default] quit
# Enable L2VPN.
[PE3] l2vpn enable
# Configure VSI aaa to use BGP to discover remote PEs and use LDP to establish LDP PWs to PE 1 and PE 2.
[PE3] vsi aaa [PE3-vsi-aaa] auto-discovery bgp [PE3-vsi-aaa-auto] route-distinguisher 1:1 [PE3-vsi-aaa-auto] vpn-target 1:1 [PE3-vsi-aaa-auto] signaling-protocol ldp [PE3-vsi-aaa-auto-ldp] vpls-id 100:100 [PE3-vsi-aaa-auto-ldp] quit [PE3-vsi-aaa-auto] quit [PE3-vsi-aaa] quit
# Bind Layer 3 Ethernet interface GigabitEthernet 2/1/1 to VSI aaa.
[PE3] interface gigabitethernet 2/1/1 [PE3-GigabitEthernet2/1/1] xconnect vsi aaa [PE3-GigabitEthernet2/1/1] quit
Verifying the configuration
# Verify that two PWs in up state have been established on PE 1.
[PE1] display l2vpn pw verbose
VSI Name: aaa
Peer: 2.2.2.9 VPLS ID: 100:100
Signaling Protocol : LDP
Link ID : 8 PW State : Up
In Label : 1555 Out Label: 1555
MTU : 1500
PW Attributes : Main
VCCV CC : -
VCCV BFD : -
Tunnel Group ID : 0x800000060000000
Tunnel NHLFE IDs : 1029
Peer: 3.3.3.9 VPLS ID: 100:100
Signaling Protocol : LDP
Link ID : 9 PW State : Up
In Label : 1554 Out Label: 1416
MTU : 1500
PW Attributes : Main
VCCV CC : -
VCCV BFD : -
Tunnel Group ID : 0x800000160000001
Tunnel NHLFE IDs : 1030
# Display LDP PW label information on PE 1.
[PE1] display l2vpn ldp verbose
Peer: 2.2.2.9 VPLS ID: 100:100
VSI Name: aaa
PW State: Up
PW Status Communication: Notification method
PW ID FEC (Local/Remote):
Local AII : (1.1.1.9, 2.2.2.9)
Remote AII : (2.2.2.9, 1.1.1.9)
PW Type : Ethernet/Ethernet
Group ID : 0/0
Label : 1555/1555
Control Word: Disabled/Disabled
VCCV CV Type: -/-
VCCV CC Type: -/-
MTU : 1500/1500
PW Status : PW forwarding/PW forwarding
Peer: 3.3.3.9 VPLS ID: 100:100
VSI Name: aaa
PW State: Up
PW Status Communication: Notification method
PW ID FEC (Local/Remote):
Local AII : (1.1.1.9, 3.3.3.9)
Remote AII : (3.3.3.9, 1.1.1.9)
PW Type : Ethernet/Ethernet
Group ID : 0/0
Label : 1554/1416
Control Word: Disabled/Disabled
VCCV CV Type: -/-
VCCV CC Type: -/-
MTU : 1500/1500
PW Status : PW forwarding/PW forwarding