35
Figure 17 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 control the number of LSPs, configure an LSP generation policy on each LSR.
Configuration procedure
1.
Configure IP addresses and masks for interfaces, including the loopback interfaces, as shown
in
. (Details not shown.)
2.
Configure OSPF on each switch to ensure IP connectivity between them:
# Configure Switch A.
<SwitchA> system-view
[SwitchA] ospf
[SwitchA-ospf-1] area 0
[SwitchA-ospf-1-area-0.0.0.0] network 1.1.1.9 0.0.0.0
[SwitchA-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255
[SwitchA-ospf-1-area-0.0.0.0] network 11.1.1.0 0.0.0.255
[SwitchA-ospf-1-area-0.0.0.0] quit
[SwitchA-ospf-1] quit
# Configure Switch B.
<SwitchB> system-view
[SwitchB] ospf
[SwitchB-ospf-1] area 0
[SwitchB-ospf-1-area-0.0.0.0] network 2.2.2.9 0.0.0.0
[SwitchB-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255
[SwitchB-ospf-1-area-0.0.0.0] network 20.1.1.0 0.0.0.255
[SwitchB-ospf-1-area-0.0.0.0] quit
[SwitchB-ospf-1] quit
# Configure Switch C.
<SwitchC> system-view
[SwitchC] ospf
[SwitchC-ospf-1] area 0
[SwitchC-ospf-1-area-0.0.0.0] network 3.3.3.9 0.0.0.0
[SwitchC-ospf-1-area-0.0.0.0] network 20.1.1.0 0.0.0.255
[SwitchC-ospf-1-area-0.0.0.0] network 21.1.1.0 0.0.0.255
[SwitchC-ospf-1-area-0.0.0.0] quit
Loop0
2.2.2.9/32
Vlan-int3
20.1.1.1/24
Loop0
3.3.3.9/32
Loop0
1.1.1.9/32
Vlan-int2
10.1.1.1/24
Vlan-int2
10.1.1.2/24
Vlan-int3
20.1.1.2/24
Switch A
Switch B
Switch C
11.1.1.0/24
21.1.1.0/24
Vlan-int4
11.1.1.1/24
Vlan-int5
21.1.1.1/24