Operation Manual – IPv4 Routing
H3C S3610&S5510 Series Ethernet Switches
Chapter 3 OSPF Configuration
3-53
Destination Cost Type NextHop AdvRouter Area
0.0.0.0/0 1563 Inter-area 192.168.1.1 192.168.0.1 0.0.0.1
172.16.1.0/24 1 Stub 172.16.1.1 172.16.1.1 0.0.0.1
192.168.1.0/24 1562 Stub 192.168.1.2 172.16.1.1 0.0.0.1
Total Nets: 3
Intra Area: 2 Inter Area: 1 ASE: 0 NSSA: 0
Note:
After this configuration, routing entries on the stub router are further reduced,
containing only one default external route.
3.10.3 Configuring an OSPF NSSA Area
I. Network requirements
The following figure shows an AS is split into three areas, where all switches run OSPF.
Switch A and Switch B act as ABRs to forward routing information between areas.
Switch D acts as the ASBR to redistribute routes (static routes).
It is required to configure Area 1 as an NSSA area, and configure Router C as the
ASBR to redistribute static routes into the AS.
II. Network diagram
Figure 3-23
Network diagram for OSPF NSSA area configuration
III. Configuration procedure
1)
Configure IP addresses for interfaces.
2)
Configure OSPF basic functions (refer to
Configuring OSPF Basic Functions
).
