ospf-3----Page:33
1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38 

Flooding Procedure
LSA Processed By Any Bidirectional Neighbor: Exploits the broadcast nature of MANETs.
LSA Forwarding Exclusion: No forwarding is performed if either of the following two conditions are satisfied for all bidirectional neighbors on the interface:
The LSA or an ACK for the LSA has been received from each neighbor.
The LSA was received on a MANET interface, and all neighbors are “covered” by another neighbor from which the LSA was received.
MDR Forwarding: Floods the LSA back out the receiving interface if there exists a bidirectional neighbor that does not satisfy condition (a) or (b).
Backup MDR Forwarding: Waits BackupWaitInterval seconds, and then floods the LSA back out the receiving interface if there exists a bidirectional neighbor that does not satisfy condition (a) or (b).
MDR Other Forwarding: LSAs are never forwarded back out the same interface.
Multiple MANET Interfaces: Optional step which avoids redundant forwarding when flooding occurs over multiple MANET interfaces.
PPT Version