It must participate in a new election for the

Designated Router and Backup DR

It must re-establish adjacency with its

Designated Router and Backup DR

It must run the shortest

path first algorithm

The topology databases will subdivide after a certain

size, requiring multiple SPF calculations.

As the area size increases, each recalculation will

also take longer, which might result in errors, requiring the algorithm to

rerun.

The larger the

network, the greater the probability of a network change and, thus, a

recalculation of the entire area.

Each router will have more neighbors, and

synchronizing the databases takes priority.

Whether there are communications outside the

autonomous system

The role of the

router in the area in which the router is located

All computation is

kept within the area, with minimum communication between the areas, allowing

the network to scale to larger sizes.

The use of multiple areas allows for the use of

prioritization.

The network domain, when divided into areas, allows

for the use of both IANA classful addressing and private addressing.

Routing devices in area 1 will temporarily lose

adjacency while the change is made.

Endpoints in Area 1 will no longer be able to reach

endpoints in other areas.

Routing devices in area 1 will no longer exchange Type

1 and Type 2 LSAs with each other.

Endpoints in Area

1 will no longer be able to reach external networks.

Type 3 and Type 4

LSAs

Create a route map

with the correct route type and metrics

Configure Area 1 as a

Not So Stubby Area (NSSA) on all routing devices in Area 1.

Configure a subnet range for Area 1 on Switch-2, and set the no-advertise

option.

Configure Area 1 as a stub area, and import the

routes with a low metric on Switch-2.