will configure OSPF area 0 on R1's serial 0/0/0 and R5's serial 0/0/0 interfaces. We will configure R1's remaining interfaces in OSPF area 1 and R5's remaining interfaces in OSPF area 2. We will configure R2, R3, and R4 in OSPF area 1 and R6, R7, and R8 in OSPF area 2....
Each router within the area will flood atype 1 router LSAwithin the area. In this LSA you will find a list with all the directly connected links of this router. How do we identify a link? The IP prefix on an interface. The link type. There are 4 different link types: ...
Shortest Path First (SPF) Algorithm Explained OSPF Single-Area Configuration Explained OSPF Stub area, Totally Stub area, NSSA, and Totally NSSA OSPF Virtual Links Explained OSPF Authentication Password and MD5 Explained OSPF Multi-Area Configuration Explained...
https://networklessons.com/ospf/ospf-lsa-types-explained/ Especially this part: "R2 is going to create a Type 3 summary LSA and flood it into area 0. This LSA will flood into all the other areas of our OSPF network. This way all the routers in other areas will know about the prefixe...
OSPF Area Types OSPF Configuration and Verification commands The course focuses onpracticaltraining -- most of the lessons involveconfigurations and demonstrationsfor the concepts that are taught. There is particular emphasis on teachingthe difference between verifying a devicesconfigurationvs a devicesoperati...
Configure Stub and Not-So-Stubby Area Types This task explains how to configure the stub area and the NSSA for OSPF. Procedure Step 1 configure Example: RP/0/RP0/CPU0:router# configure Enters mode. Step 2 Do one of the following: router ospf process-name rout...
Name types of LSA ? Why do I receive the “cannot allocate router id” error message when I configure Router OSPF One ? What are the different OSPF network types and give an example for each ? What command would you use to create a totally stubby area?
Configuration of R3 looks similar, but with the difference in area number, since R3 is in area 1: What about R2? Because R2 is an ABR, we need to establish neighbor relationship with both R1 and R3. To do that, we need to specify different area ID for each neighbor relationship, 0 ...
They consist of the autonomous system, area types, interior routers, ABRs, and ASBRs. Figure 1: OSPF Routing Components This figure illustrates the routing components in an OSPF network topology. Implementing OSPF 5 Autonomous Systems Implementing OSPF Autonomous Systems The autonomous system is a ...
As been explained by Dmnceil above it's the ASBR that informs the ABR using the Type 1 LSA that it is an ASBR. Based on the bits set in the Type 1 LSA - it will instruct the ABR whether or not to translate anything. So in the NSSA-area the ASBR sets the bits on the Type 1...