3Com MSR 50 Series Configuration Manual page 961

# Configure RouterC
[RouterC] ospf
[RouterC-ospf-1] area 1
[RouterC-ospf-1-area-0.0.0.1] nssa
[RouterC-ospf-1-area-0.0.0.1] quit
[RouterC-ospf-1] quit
n
It is recommended to configure the nssa command with the keyword
default-route-advertise no-summary on Router A (an ABR) to reduce the
routing table size on NSSA routers. On other NSSA routers, using the nssa
command is ok.
# Display routing information on RouterC
[RouterC] display ospf routing
OSPF Process 1 with Router ID 10.4.1.1
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
4 Configure RouterC to redistribute static routes
[RouterC] ip route-static 3.1.3.1 24 Ethernet 1/2 11.1.1.1
[RouterC] ospf
[RouterC-ospf-1] import-route static
[RouterC-ospf-1] quit
# Display routing table information on RouterD
[RouterD] display ospf routing
OSPF Process 1 with Router ID 10.5.1.1
Routing for Network
Destination
10.2.1.0/24
10.3.1.0/24
10.4.1.0/24
10.5.1.0/24
10.1.1.0/24
Routing for ASEs
Destination
3.1.3.0/24
Total Nets: 6
Intra Area: 2
n
You can see on RouterD an external route imported from the NSSA area.
Routing Tables
Cost Type NextHop
4 Inter 10.2.1.1
3 Transit 10.2.1.2
3 Stub 10.4.1.1
Inter Area: 1 ASE: 0
Routing Tables
Cost Type NextHop
22 Inter 10.3.1.1
10 Transit 10.3.1.2
25 Inter 10.3.1.1
10 Stub 10.5.1.1
12 Inter 10.3.1.1
Cost Type Tag
1 Type2 1
Inter Area: 3 ASE: 1
OSPF Configuration Examples
AdvRouter
10.2.1.1
10.2.1.1
10.4.1.1
NSSA: 0
AdvRouter
10.3.1.1
10.3.1.1
10.3.1.1
10.5.1.1
10.3.1.1
NextHop
10.3.1.1
NSSA: 0
961
Area
0.0.0.1
0.0.0.1
0.0.0.1
Area
0.0.0.2
0.0.0.2
0.0.0.2
0.0.0.2
0.0.0.2
AdvRouter
10.2.1.1