Ospf Stub Area Configuration Example - HP HPE FlexNetwork 7500 series Configuration Manual

11.2.1.0/24
11.2.1.0/32
11.2.1.2/32
11.2.1.255/32
127.0.0.0/8
127.0.0.0/32
127.0.0.1/32
127.255.255.255/32
224.0.0.0/4
224.0.0.0/24
255.255.255.255/32
The output shows that routes 10.1.1.0/24, 10.2.1.0/24, 10.3.1.0/24 and 10.4.1.0/24 are
summarized into a single route 10.0.0.0/8.

OSPF stub area configuration example

Network requirements
As shown in
•
Enable OSPF on all switches, and split the AS into three areas.
•
Configure Switch A and Switch B as ABRs to forward routing information between areas.
•
Configure Switch D as the ASBR to redistribute static routes.
•
Configure Area 1 as a stub area to reduce advertised LSAs without influencing reachability.
Figure 27 Network diagram
Switch A
Vlan-int200
10.2.1.1/24
Vlan-int200
Area 1
10.2.1.2/24
Stub
Switch C
Configuration procedure
1. Configure IP addresses for interfaces. (Details not shown.)
2. Enable OSPF (see
3. Configure route redistribution:
# Configure Switch D to redistribute static routes.
<SwitchD> system-view
[SwitchD] ip route-static 3.1.2.1 24 10.5.1.2
[SwitchD] ospf
[SwitchD-ospf-1] import-route static
[SwitchD-ospf-1] quit
# Display ABR/ASBR information on Switch C.
<SwitchC> display ospf abr-asbr
Direct 0
Direct 0
Direct 0
Direct 0
Direct 0
Direct 0
Direct 0
Direct 0
Direct 0
Direct 0
Direct 0
Figure 27:
Area 0
Vlan-int100
10.1.1.1/24
Vlan-int100
10.1.1.2/24
Vlan-int300
Vlan-int300
10.4.1.1/24
10.5.1.1/24
"Basic OSPF configuration
0
0
0
0
0
0
0
0
0
0
0
Switch B
Vlan-int200
10.3.1.1/24
Vlan-int200
Area 2
10.3.1.2/24
ASBR
Switch D
example").
112
11.2.1.2 Vlan100
11.2.1.2 Vlan100
127.0.0.1 InLoop0
11.2.1.2 Vlan100
127.0.0.1 InLoop0
127.0.0.1 InLoop0
127.0.0.1 InLoop0
127.0.0.1 InLoop0
0.0.0.0 NULL0
0.0.0.0 NULL0
127.0.0.1 InLoop0