HP MSR2000 Configuration Manual page 55

Configure LDP to establish LSPs only on the link Router A—Router B—Router C to forward traffic between
subnets 1 1.1.1.0/24 and 21.1.1.0/24.
Figure 19 Network diagram
Requirements analysis
To ensure that the LSRs establish LSPs automatically, enable LDP on each LSR.
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To establish LDP LSPs, configure a routing protocol to ensure IP connectivity between the LSRs. This
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example uses OSPF.
To ensure that LDP establishes LSPs only for the routes 1 1.1.1.0/24 and 21.1.1.0/24, configure LSP
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generation policies on each LSR.
To ensure that LDP establishes LSPs only over the link Router A—Router B—Router C, configure label
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advertisement policies as follows:
Router A advertises only the label mapping for FEC 1 1.1.1.0/24 to Router B.
Router C advertises only the label mapping for FEC 21.1.1.0/24 to Router B.
Router D does not advertise label mapping for FEC 21.1.1.0/24 to Router A. Router D does not
advertise label mapping for FEC 1 1.1.1.0/24 to Router C.
Configuration procedure
1. Configure IP addresses and masks for interfaces, including the loopback interfaces, as shown
in Figure
2. Configure OSPF on each router to ensure IP connectivity between them. (Details not shown.)
3. Enable MPLS and LDP:
# Configure Router A.
<RouterA> system-view
[RouterA] mpls lsr-id 1.1.1.9
[RouterA] mpls ldp
[RouterA-ldp] quit
[RouterA] interface serial 2/1/0
[RouterA-Serial2/1/0] mpls enable
[RouterA-Serial2/1/0] mpls ldp enable
[RouterA-Serial2/1/0] quit
19. (Details not shown.)
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