HP 6127xlg Configuration Manual page 59

Figure 20 Network diagram
Requirements analysis
• To ensure that the LSRs establish LSPs automatically, enable LDP on each LSR.
To establish LDP LSPs, configure a routing protocol to ensure IP connectivity between the LSRs. This
•
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
•
generation policies on each LSR.
To allow LDP to establish backup LSRs, configure OSPF FRR on Switch S and Switch D.
•
Configuration procedure
1. Configure IP addresses and masks for interfaces, including the loopback interfaces, as shown
in Figure
2. Configure OSPF on each switch to ensure IP connectivity between them. (Details not shown.)
3. Configure OSPF FRR by using one of the following methods:
(Method 1.) Enable OSPF FRR to calculate a backup next hop by using the LFA algorithm:
# Configure Switch S.
<SwitchS> system-view
[SwitchS] bfd echo-source-ip 10.10.10.10
[SwitchS] ospf 1
[SwitchS-ospf-1] fast-reroute lfa
[SwitchS-ospf-1] quit
# Configure Switch D.
<SwitchD> system-view
[SwitchD] bfd echo-source-ip 11.11.11.11
[SwitchD] ospf 1
[SwitchD-ospf-1] fast-reroute lfa
[SwitchD-ospf-1] quit
(Method 2.) Enable OSPF FRR to specify a backup next hop by using a routing policy:
# Configure Switch S.
<SwitchS> system-view
[SwitchS] bfd echo-source-ip 10.10.10.10
20. (Details not shown.)
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