F3215-HP Load Balancing Module Network Management Configuration Guide-6PW101

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Figure 145 Network diagram

2. Configuration procedure

a. Configure IP addresses for interfaces. (Details not shown.)

b. Configuring basic OSPF (see "Configuring basic OSPF").

c. Configure Area 1 as an NSSA area:

# Configure Router A.

<RouterA> system-view

[RouterA] ospf

[RouterA-ospf-1] area 1

[RouterA-ospf-1-area-0.0.0.1] nssa

[RouterA-ospf-1-area-0.0.0.1] quit

# Configure LB.

<LB> system-view

[LB] ospf

[LB-ospf-1] area 1

[LB-ospf-1-area-0.0.0.1] nssa

[LB-ospf-1-area-0.0.0.1] quit

[LB-ospf-1] quit

NOTE:

• To allow LB in the NSSA area to reach other areas within the AS, you must provide the keyword

default-route-advertise for the nssa command issued on LB (the ABR) so Router C can obtain a defaul

route.

• Configuring the nssa command with the keyword no-summary on Router A can reduce the routing

table size on NSSA routers. On other NSSA routers, you only need to configure the nssa command.

# Display routing information on LB.

[LB] display ospf routing

OSPF Process 1 with Router ID 10.4.1.1

Routing Tables

Routing for Network

Destination Cost Type NextHop AdvRouter Area

10.2.1.0/24 3 Transit 10.2.1.2 10.4.1.1 0.0.0.1

10.3.1.0/24 7 Inter 10.2.1.1 10.2.1.1 0.0.0.1