Configuring An Ospf Nssa Area - HP 3600 v2 series Configuration Manual

10.4.1.0/24
10.5.1.0/24
10.1.1.0/24
Total Nets: 6
Intra Area: 2
NOTE:
When Switch C resides in the stub area, a default route takes the place of the external route.
# Filter Type-3 LSAs out the stub area
[SwitchA] ospf
[SwitchA-ospf-1] area 1
[SwitchA-ospf-1-area-0.0.0.1] stub no-summary
[SwitchA-ospf-1-area-0.0.0.1] quit
# Display OSPF routing information on Switch C.
[SwitchC] display ospf routing
Routing for Network
Destination
0.0.0.0/0
10.2.1.0/24
10.4.1.0/24
Total Nets: 3
Intra Area: 2
NOTE:
After this configuration, routing entries on the stub router are further reduced, containing only one default
external route.

Configuring an OSPF NSSA area

Network requirements
Figure 42 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.
Configure Area 1 as an NSSA area and configure Switch C as the ASBR to redistribute static routes into
the AS.
3
17
5
Inter Area: 4
OSPF Process 1 with Router ID 10.4.1.1
Routing Tables
Cost
4
3
3
Inter Area: 1
Stub 10.4.1.1
Inter 10.2.1.1
Inter 10.2.1.1
ASE: 0 NSSA: 0
Type NextHop
Inter 10.2.1.1
Transit 10.2.1.2
Stub 10.4.1.1
ASE: 0 NSSA: 0
109
10.4.1.1 0.0.0.1
10.2.1.1 0.0.0.1
10.2.1.1 0.0.0.1
AdvRouter Area
10.2.1.1 0.0.0.1
10.4.1.1 0.0.0.1
10.4.1.1 0.0.0.1