H3C Technologies H3C SR8800 - Manual (Page 390)

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Figure 88 Network diagram
Device Interface IP address Device Interface IP address
CE 1 GE4/1/1 2001:1::1/96 CE 2 GE4/1/1 2001:2::1/96
PE 1 Loop0 1.1.1.9/32 PE 2 Loop0 4.4.4.9/32
GE4/1/1 2001:1::2/96 GE4/1/1 2001:2::2/96
POS2/1/1 172.1.1.2/24 POS2/1/1 162.1.1.2/24
ASBR-PE1 Loop0 2.2.2.9/32 ASBR-PE2 Loop0 3.3.3.9/32
POS2/1/1 172.1.1.1/24 POS2/1/1 162.1.1.1/24
POS2/1/2 2002:1::1/96 POS2/1/2 2002:1::2/96
Configuration procedure
1. Configure an IGP (such as OSPF) on each MPLS backbone to ensure IP connectivity within the
backbone. (Details not shown)
NOTE:
Be sure to advertise the route to the 32-bit loopback interface address of each router through OSPF. The
loopback interface address of a router is to be used as the router’s LSR ID.
After you complete the configurations, each ASBR PE and the PE in the same AS can establish an
OSPF adjacency. Issue the display ospf peer command and ping command; the output shows that
the adjacencies are in Full state, and that the PE and ASBR PE in the same AS have learned the
routes to the loopback interfaces of each other and can ping each other.
2. Configure basic MPLS and enable MPLS LDP on each MPLS backbone to establish LDP LSPs.
# Configure basic MPLS on PE 1 and enable MPLS LDP for both PE 1 and the interface connected
to ASBR-PE 1.
system-view
[PE1] mpls lsr-id 1.1.1.9
[PE1] mpls
[PE1-mpls] quit
[PE1] mpls ldp
Loop0 Loop0
Loop0 Loop0
POS2/1/2 POS2/1/2
POS2/1/1
POS2/1/1
POS2/1/1
POS2/1/1
GE4/1/1
GE4/1/1 GE4/1/1
GE4/1/1
CE 1 CE 2
AS 65001 AS 65002
PE 1 PE 2
ASBR-PE 2 ASBR-PE 1
MPLS backbone MPLS backbone
AS 100 AS 200