Configuring inter-as option a, Configuring inter-as option b – H3C Technologies H3C S12500-X Series Switches User Manual
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[PE2-Vlan-interface11] mpls ldp enable
[PE2-Vlan-interface11] quit
# Configure interface Loopback 0, and enable 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 route target attributes.
[PE2] ip vpn-instance vpn1
[PE2-vpn-instance-vpn1] route-distinguisher 11:11
[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
# Configure VLAN-interface 12, and bind the interface to VPN instance vpn1.
[PE2] interface vlan-interface 12
[PE2-Vlan-interface12] ip binding vpn-instance vpn1
[PE2-Vlan-interface12] ip address 20.0.0.1 24
[PE2-Vlan-interface12] quit
# Enable BGP on PE 2.
[PE2] bgp 600
# Enable the capability to advertise labeled routes to IBGP peer 4.4.4.9 and to receive labeled
routes from the peer.
[PE2-bgp] peer 4.4.4.9 as-number 600
[PE2-bgp] peer 4.4.4.9 connect-interface loopback 0
[PE2-bgp] address-family ipv4 unicast
[PE2-bgp-ipv4] peer 4.4.4.9 enable
[PE2-bgp-ipv4] peer 4.4.4.9 label-route-capability
[PE2-bgp-ipv4] quit
# Configure the maximum hop count from PE 2 to EBGP peer 2.2.2.9 as 10.
[PE2-bgp] peer 2.2.2.9 as-number 100
[PE2-bgp] peer 2.2.2.9 connect-interface loopback 0
[PE2-bgp] peer 2.2.2.9 ebgp-max-hop 10
# Configure peer 2.2.2.9 as a VPNv4 peer.
[PE2-bgp] address-family vpnv4
[PE2-bgp-vpnv4] peer 2.2.2.9 enable
[PE2-bgp-vpnv4] quit
# Configure 20.0.0.2 as an EBGP peer, and redistribute BGP routes to the routing table of vpn1.
[PE2-bgp] ip vpn-instance vpn1
[PE2-bgp-vpn1] peer 20.0.0.2 as-number 65002
[PE2-bgp-vpn1] address-family ipv4 unicast
[PE2-bgp-ipv4-vpn1] peer 20.0.0.2 enable
[PE2-bgp-ipv4-vpn1] quit
[PE2-bgp-vpn1] quit
[PE2-bgp] quit
6.
Configure CE 2:
# Configure an IP address for VLAN-interface 12.