How many network LSAs are present in the 101.101.101.101 area
Examine the network LSA in the 101.101.101.101 area
How many routers are attached to the network
Who is the DR and the BDR for the network segment
Who is originating the network LSA
Examine the network LSAs for the backbone area
How many network LSAs are present
How many attached routers are present in the network LSAs on the backbone
Examine a network LSA for a network segment your router is connected to and locate the reference to the network segment in your Router LSA your router is generating
Eliminate all of the unnecessary network LSAs on the backbone
After all the routers are finished eliminating the backbone area Network LSAs, check and see how many are network LSAs are still present in the backbone area
Again, examine your router's Router LSA and see if you can find a reference to using the network segment as a transit network
Check the network LSAs after an hour (after they've aged out)