I have a question to understand please clarify me.
In the flow chart, which i have attached if the sequence no is higher, go to “A”.
when “sequence no” become higher ( increment)?
Up to my understanding,
1.when there is a change in OSPF network.
2.By default, each OSPF LSA will send LSU for every 30 minutes.
Even though there is no change in the network,after 30 mins time expire (default), "DRother" will send LSU with “sequence no” increment to DR and BDR.
With this, DR will consider there is a change in a network by seeing the “sequence no” increment in LSU sent by DRother. Now in DR,with respective to flow chart, it has to go to “A”.
my questions:
1.why it needs to go ”A” when there is no change in the network?
2.why sequence number should increase when there is no change in a network?
3.In the flow chart, " Is sequence no same" if yes ignore LSA. when will this scenario happen ?
4. In the flow chart, " Is sequence no higher" if "No" send LSU with newer information to the source. when will this scenario happen ?
