238
[PE1-bgp-vpnv4] nesting-vpn
[PE1-bgp-vpnv4] quit
[PE1-bgp] ip vpn-instance vpn1
[PE1-bgp-vpn1] address-family vpnv4
[PE1-bgp-vpnv4-vpn1] peer 11.1.1.1 enable
[PE1-bgp-vpnv4-vpn1] quit
[PE1-bgp-vpn1] quit
[PE1-bgp] quit
# Enable CE 1 to exchange VPNv4 routes with PE 1.
[CE1] bgp 200
[CE1-bgp] address-family vpnv4
[CE1-bgp-vpnv4] peer 11.1.1.2 enable
# Allow the local AS number to appear in the AS-PATH attribute of the routes received.
[CE1-bgp-vpnv4] peer 11.1.1.2 allow-as-loop 2
# Disable route target based filtering of received VPNv4 routes.
[CE1-bgp-vpnv4] undo policy vpn-target
[CE1-bgp-vpnv4] quit
[CE1-bgp] quit
# Configure PE 2 and CE 2 in the same way that PE 1 and CE 1 are configured. (Details not
shown.)
6. Establish MP-IBGP peer relationships between sub-VPN PEs and CEs of the customer VPN to
exchange VPNv4 routes of sub-VPNs:
# Configure PE 3.
[PE3] bgp 200
[PE3-bgp] peer 2.2.2.9 as-number 200
[PE3-bgp] peer 2.2.2.9 connect-interface loopback 0
[PE3-bgp] address-family vpnv4
[PE3-bgp-vpnv4] peer 2.2.2.9 enable
# Allow the local AS number to appear in the AS-PATH attribute of the routes received.
[PE3-bgp-vpnv4] peer 2.2.2.9 allow-as-loop 2
[PE3-bgp-vpnv4] quit
[PE3-bgp] quit
# Configure CE 1.
[CE1] bgp 200
[CE1-bgp] peer 1.1.1.9 as-number 200
[CE1-bgp] peer 1.1.1.9 connect-interface loopback 0
[CE1-bgp] address-family vpnv4
[CE1-bgp-vpnv4] peer 1.1.1.9 enable
[CE1-bgp-vpnv4] undo policy vpn-target
[CE1-bgp-vpnv4] quit
[CE1-bgp] quit
# Configure PE 4 and CE 2 in the same way that PE 3 and CE 1 are configured. (Details not
shown.)
Verifying the configuration
1. Display the public routing table and VPN routing table on the provider PEs, for example, on PE
1:
# Verify that the public routing table contains only routes on the service provider network.
[PE1] display ip routing-table
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