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Device
Configuration procedure
1.
Configure basic IPv6 MPLS L3VPN:
Configure OSPF on the MPLS backbone to allow the PEs and P device to learn the routes
of the loopback interfaces from each other.
Configure basic MPLS and MPLS LDP on the MPLS backbone to establish LDP LSPs.
Establish an MP-IBGP peer relationship between the PEs to advertise VPN IPv6 routes.
Configure the VPN instance of VPN 1 on PE 1 to allow CE 1 to access the network.
Configure the VPN instance of VPN 1 on PE 2 to allow CE 2 to access the network.
Configure the VPN instance of VPN 1 on PE 3 to allow CE 3 to access the network.
Configure BGP as the PE-CE routing protocol, and redistribute routes of the CEs into the
PEs.
For more information about basic MPLS L3VPN configurations, see
L3VPNs."
2.
Configure BGP AS number substitution:
# Configure BGP AS number substitution on PE 1, PE 2, and PE 3. For more information about
the configuration, see
# Display routing information on CE 2. The output shows that CE 2 has learned the route
100::/96 from CE 1. A routing loop has occurred because CE 1 and CE 2 reside in the same
site.
<CE2> display bgp routing-table ipv6 peer 10:2::2 received-routes
Total number of routes: 2
BGP local router ID is 12.1.1.3
Status codes: * - valid, > - best, d - dampened, h - history,
* >e Network : 100::
NextHop : 10:2::2
PrefVal : 0
MED
Path/Ogn: 100 100?
* >e Network : 200::
NextHop : 10:2::2
PrefVal : 0
MED
Path/Ogn: 100 100?
3.
Configure BGP SoO attribute:
# On PE 1, configure the SoO attribute as 1:100 for CE 1.
<PE1> system-view
[PE1] bgp 100
[PE1-bgp] ip vpn-instance vpn1
Interface
IP address
GE2/0/1
10:3::2/96
GE2/0/2
50.1.1.2/24
"Configuring BGP AS number
s - suppressed, S - stale, i - internal, e - external
Origin: i - IGP, e - EGP, ? - incomplete
:
:
Device
Interface
GE2/0/2
GE2/0/3
substitution."
402
IP address
40.1.1.2/24
50.1.1.1/24
"Configuring IPv6 MPLS
PrefixLen : 96
LocPrf
:
OutLabel
: NULL
PrefixLen : 96
LocPrf
:
OutLabel
: NULL
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