Prerequisites: CCNP level skills.
Pic. 1 – OSPF Topology.
Notice!
OSPF routers re-flood all LSAs every 30 minute (MaxAge).
OSPF routers re-flood all LSAs every 30 minute (MaxAge).
Task 1
Configure area 1 so that the LSAs never age out in this area.
Lab Solution
Task 1
Configure area 1 so that the LSAs never age out in this area.
R1 OSPF Configuration:
!
interface FastEthernet1/0
ip address 10.1.124.1 255.255.255.0
ip ospf flood-reduction
ip address 10.1.124.1 255.255.255.0
ip ospf flood-reduction
!
R2 OSPF Configuration:
!
interface FastEthernet1/0
ip address 10.1.124.2 255.255.255.0
ip ospf flood-reduction
ip address 10.1.124.2 255.255.255.0
ip ospf flood-reduction
!
R4 OSPF Configuration:
!
interface FastEthernet1/0
ip address 10.1.124.4 255.255.255.0
ip ospf flood-reduction
!
ip address 10.1.124.4 255.255.255.0
ip ospf flood-reduction
!
interface Loopback0
ip address 172.16.104.4 255.255.255.0
ip ospf network point-to-point
ip ospf flood-reduction
!
ip address 172.16.104.4 255.255.255.0
ip ospf network point-to-point
ip ospf flood-reduction
!
interface Loopback1
ip address 172.16.144.4 255.255.255.0
ip ospf network point-to-point
ip ospf flood-reduction
ip address 172.16.144.4 255.255.255.0
ip ospf network point-to-point
ip ospf flood-reduction
!
Verification:
Pic. 1
Note!
Both R1 and R2 set DoNotAge flag in their LSAs.