Dear Agapides,
kindly,
- i have confuse about sentecnce “Once OSPF has restarted, it will re-establish neighbor adjacencies with the helper routers” it contradict ( sorry if wrong with using word I am not native), with concept of gracefull restart that neighbor adjacency is not down during ospf process restart…
2.usually i clear ospf process when i make change in LSDB using filtering or summerization or any thing else change LSDB ,so you mentioned if thers is changed in LSDB before & after gracefull restart , it terminate gracefull restart ( mean neighbor reset ) & interupt in network happen ,so how can compromise between two concept .need your nice clearification