Typical Bgp/Mpls Vpn Configuration Example - 3Com 8807 Configuration Manual

552 C 49: BGP/MPLS VPN C
HAPTER
Typical BGP/MPLS VPN
Configuration
Example
Integrated BGP/MPLS
VPN Configuration
Example
ONFIGURATION
Network requirements
VPNA includes CE1 and CE3; VPNB includes CE2 and CE4.
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Subscribers in different VPNs cannot access each other. The VPN-target
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attribute for VPNA is 111:1 and that for VPNB is 222:2.
The PEs and P are 3Com switches supporting MPLS, and CEs are common layer
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3 switches.
n
The configuration in this case is focused on:
Configure EBGP to exchange VPN routing information between CEs and PEs.
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Configure OSPF for inter-PE communication between PEs.
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Configure MP-IBGP to exchange VPN routing information between PEs.
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Network diagram
Figure 134 Network diagram for integrated BGP/MPLS VPN
AS 65410 AS 65410
CE1 CE1
VLAN201 VLAN201
168.1.1.1/16 168.1.1.1/16
VPN-A VPN-A
VLAN202 VLAN202
168.1.1.2/16 168.1.1.2/16
202.100.1.1./32 202.100.1.1./32
VLAN202 VLAN202
AS 65420 AS 65420
168.2.1.2/16 168.2.1.2/16
CE2 CE2
VLAN201 VLAN201
168.2.1.1/16 168.2.1.1/16
VPN-B VPN-B
Configuration procedure
The following are the configuration introduction to PE, CE and P switches.
1 Configure CE1.
# Configure CE1 and PE1 as EBGP neighbors, import direct-connect routes and
static routes to import intra-CE1 VPN routes into BGP and advertise to
PE1.CE1connects to PE1 through interface Gigabitethernet 2/1/1.
[CE1] vlan 201
[CE1-vlan201] port gigabitethernet 2/1/1
AS 100 AS 100
PE1 PE1 PE1 PE1
RD(100:1) RD(100:1) RD(100:1) RD(100:1)
VLAN201 VLAN201 VLAN201 VLAN201
172.1.1.1/16 172.1.1.1/16 172.3.1.1/16 172.3.1.1/16
Loopback0 Loopback0
P P P P
VLAN301 VLAN301
VLAN302 VLAN302
PE2 PE2
RD(100:2) RD(100:2)
VLAN201 VLAN201
VLAN201 VLAN201
172.4.1.1./16 172.4.1.1./16
172.2.1.1./16 172.2.1.1./16
Loopback0 Loopback0
202.100.1.2./32 202.100.1.2./32
AS 65430 AS 65430 AS 65430 AS 65430
VLAN201 VLAN201
168.3.1.1/16 168.3.1.1/16
PE3 PE3
RD(100:3) RD(100:3)
VLAN202 VLAN202
168.3.1.2/16 168.3.1.2/16 168.3.1.2/16 168.3.1.2/16
Loopback0 Loopback0
VLAN303 VLAN303
202.100.1.3./32 202.100.1.3./32
VLAN304 VLAN304
PE4 PE4
RD(100:4) RD(100:4)
VLAN202 VLAN202
168.4.1.2/16 168.4.1.2/16
Loopback0 Loopback0
202.100.1.4./32 202.100.1.4./32
VLAN201 VLAN201
168.4.1.1/16 168.4.1.1/16
CE3 CE3 CE3 CE3
VPN-A VPN-A VPN-A VPN-A
AS 65440 AS 65440 AS 65440 AS 65440
CE4 CE4 CE4 CE4
VPN-B VPN-B VPN-B VPN-B